Measurement of the forward energy flow in pp collisions at [Formula: see text]

The energy flow created in pp collisions at [Formula: see text] is studied within the pseudorapidity range 1.9<η<4.9 with data collected by the LHCb experiment. The measurements are performed for inclusive minimum-bias interactions, hard scattering processes and events with an enhanced or suppressed diffractive contribution. The results are compared to predictions given by Pythia-based and cosmic-ray event generators, which provide different models of soft hadronic interactions.

First observation of the decay Bs2*(5840)(0)→B*+ K- and studies of excited Bs(0) mesons

The properties of the orbitally excited (L=1) Bs(0) states are studied by using 1.0  fb(-1) of pp collisions at sqrt[s]=7  TeV collected with the LHCb detector. The first observation of the Bs2*(5840)(0) meson decaying to B*+ K- is reported, and the corresponding branching fraction measured relative to the B+ K- decay mode. The Bs1(5830)(0)→B*+ K- decay is observed as well. The width of the Bs2*(5840)(0) state is measured for the first time, and the masses of the two states are determined with the highest precision to date. The observation of the Bs2*(5840)(0)→B*+ K- decay favors the spin-parity assignment J(P)=2+ for the Bs2*(5840)(0) meson. In addition, the most precise measurement of the mass difference m(B*+)-m(B+)=45.01±0.30(stat)±0.23(syst)  MeV/c(2) is obtained.

Measurement of the CP asymmetry in B(0)→K(*0)μ(+)μ(-) decays

A measurement of the CP asymmetry in B(0)→K(*0)μ(+)μ(-) decays is presented, based on 1.0 fb(-1) of pp collision data recorded by the LHCb experiment during 2011. The measurement is performed in six bins of invariant mass squared of the μ(+)μ(-) pair, excluding the J/ψ and ψ(2S) resonance regions. Production and detection asymmetries are removed using the B(0)→J/ψK(*0) decay as a control mode. The integrated CP asymmetry is found to be -0.072±0.040(stat)±0.005(syst), consistent with the standard model.

Measurements of B(c)+ production and mass with the B(c)+ → J/ψπ+ decay

Measurements of B(c)(+) production and mass are performed with the decay mode B(c)(+)→J/ψπ(+) using 0.37 fb(-1) of data collected in pp collisions at √[s]=7 TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the B(c)(+)→J/ψπ(+) and the B(+)→J/ψK(+) decays is measured to be (0.68±0.10(stat)±0.03(syst)±0.05(lifetime))% for B(c)(+) and B(+) mesons with transverse momenta p(T)>4 GeV/c and pseudorapidities 2.5<η<4.5. The B(c)(+) mass is directly measured to be 6273.7±1.3(stat)±1.6(syst) MeV/c(2), and the measured mass difference with respect to the B(+) meson is M(B(c)(+))-M(B(+))=994.6±1.3(stat)±0.6(syst) MeV/c(2).

Observation of excited Λ(b)(0) baryons

Using pp collision data corresponding to 1.0 fb(-1) integrated luminosity collected by the LHCb detector, two narrow states are observed in the Λ(b)(0)π(+)π(-) spectrum with masses 5911.97±0.12(stat)±0.02(syst)±0.66(Λ(b)(0) mass) MeV/c(2) and 5919.77±0.08(stat)±0.02(syst)±0.66(Λ(b)(0) mass) MeV/c(2). The significances of the observations are 5.2 and 10.2 standard deviations, respectively. These states are interpreted as the orbitally excited Λ(b)(0) baryons, Λ(b)(*0)(5912) and Λ(b)(*0)(5920).

Measurement of the B¯(s)(0) effective lifetime in the J/ψf0(980) final state

The effective lifetime of the B ¯(s)(0) meson in the decay mode B¯(s)(0)→J/ψf(0)(980) is measured using 1.0 fb(-1) of data collected in pp collisions at √s=7 TeV with the LHCb detector. The result is 1.700±0.040±0.026 ps, where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy B¯(s)(0) mass eigenstate, Γ(H)=0.588±0.014±0.009 ps(-1).

Observation of B0→D¯(0)K(+)K(-) and evidence for B(s)(0)→D¯(0)K(+)K(-)

The first observation of the decay B0→D¯(0)K(+)K(-) is reported from an analysis of 0.62 fb(-1) of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B(0)→D ¯(0)π(+)π(-) to be (B(B(0)→D¯(0)K(+)K(-))/B(B(0)→D¯(0)π(+)π(-))=0.056±0.011±0.007,where the first uncertainty is statistical and the second is systematic. The significance of the signal is 5.8σ. Evidence, with 3.8σ significance, for B(s)(0)→D¯(0)K(+)K(-) decays is also presented. The relative branching fraction is measured to be B(B(s)(0)→D¯(0)K(+)K(-))/B(B(0)→D¯(0)K(+)K(-))=0.90±0.27±0.20. These channels are of interest to study the mechanisms behind hadronic B decays, and open new possibilities for CP violation analyses with larger data sets.

Measurement of relative branching fractions of B decays to ψ(2S) and J/ψ mesons

The relative rates of B-meson decays into J/ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions ([Formula: see text]) are measured to be [Formula: see text] where the third uncertainty is from the ratio of the ψ(2S) and J/ψ branching fractions to μ⁺μ^-.

Measurement of ψ(2S) meson production in pp collisions at [Formula: see text]

The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at [Formula: see text] has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb^-1. The ψ(2S) mesons are reconstructed in the decay channels ψ(2S)→μ⁺μ^- and ψ(2S)→J/ψπ⁺π^-, with the J/ψ meson decaying into two muons. Results are presented both for promptly produced ψ(2S) mesons and for those originating from b-hadron decays. In the kinematic range p_T(ψ(2S))≤16 GeV/c and 2<y(ψ(2S))≤4.5 we measure [Formula: see text] where the last uncertainty on the prompt cross-section is due to the unknown ψ(2S) polarization. Recent QCD calculations are found to be in good agreement with our measurements. Combining the present result with the LHCb J/ψ measurements we determine the inclusive branching fraction [Formula: see text] where the last uncertainty is due to the [Formula: see text], [Formula: see text] and [Formula: see text] branching fraction uncertainties.

First observation of the decay B(c)+ → J/ψπ(+) π- π+

The decay B(c)(+) → J/ψπ(+) π(-) π(+) is observed for the first time, using 0.8 fb(-1) of pp collisions at sqrt[s] = 7 TeV collected by the LHCb experiment. The ratio of branching fractions B(B(c)(+) → J/ψπ(+) π(-) π(+))/B(B(c)(+)→J/ψπ^{+}) is measured to be 2.41 ± 0.30 ± 0.33, where the first uncertainty is statistical and the second is systematic. The result is in agreement with theoretical predictions.

Determination of the sign of the decay width difference in the B(s)(0) system

The interference between the K+ K- S-wave and P-wave amplitudes in B(s)(0) → J/ψK+ K- decays with the K+ K- pairs in the region around the ϕ(1020) resonance is used to determine the variation of the difference of the strong phase between these amplitudes as a function of K+ K- invariant mass. Combined with the results from our CP asymmetry measurement in B(s)(0) → J/ψϕ decays, we conclude that the B(s)(0) mass eigenstate that is almost CP = +1 is lighter and decays faster than the mass eigenstate that is almost CP = -1. This determines the sign of the decay width difference ΔΓ(s) ≡ Γ(L) - Γ(H) to be positive. Our result also resolves the ambiguity in the past measurements of the CP violating phase ϕ(s) to be close to zero rather than π. These conclusions are in agreement with the standard model expectations.

Strong constraints on the rare decays B(s)(0) → μ+ μ- and B0 → μ+ μ-

A search for B(s)(0) → μ+ μ- and B0 → μ+ μ decays is performed using 1.0  fb(-1) of pp collision data collected at sqrt[s] = 7  TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number of observed events is consistent with expectation from background and standard model signal predictions. Upper limits on the branching fractions are determined to be B(B(s)(0) → μ+ μ-) < 4.5(3.8)×10(-9) and B(B0 → μ+ μ-) < 1.0(0.81)×10(-9) at 95% (90%) confidence level.

Opposite-side flavour tagging of B mesons at the LHCb experiment

The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B⁺→J/ψK⁺, B⁰→J/ψK^∗0 and B⁰→D^∗-μ⁺ν_μ decay modes with 0.37 fb^-1 of data collected in pp collisions at [Formula: see text] during the 2011 physics run. The opposite-side tagging power is determined in the B⁺→J/ψK⁺ channel to be (2.10±0.08±0.24) %, where the first uncertainty is statistical and the second is systematic.

Measurement of production in collisions at [Formula: see text]

The production of ϒ(1S), ϒ(2S) and ϒ(3S) mesons in proton-proton collisions at the centre-of-mass energy of [Formula: see text] is studied with the LHCb detector. The analysis is based on a data sample of 25 pb-1 collected at the Large Hadron Collider. The ϒ mesons are reconstructed in the decay mode ϒ→μ+μ- and the signal yields are extracted from a fit to the μ+μ- invariant mass distributions. The differential production cross-sections times dimuon branching fractions are measured as a function of the ϒ transverse momentum pT and rapidity y, over the range pT <15 GeV/c and 2.0 Collapse

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Affiliation(s)

The LHCb Collaboration />CERN, 1211 Geneva 23, Switzerland
R. Aaij />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
C. Abellan Beteta />Universitat de Barcelona, Barcelona, Spain
B. Adeva />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
M. Adinolfi />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
C. Adrover />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
A. Affolder />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
Z. Ajaltouni />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
J. Albrecht />European Organization for Nuclear Research (CERN), Geneva, Switzerland
F. Alessio />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Alexander />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
G. Alkhazov />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
P. Alvarez Cartelle />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. A. Alves />Sezione INFN di Roma La Sapienza, Roma, Italy
S. Amato />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
Y. Amhis />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
J. Anderson />Physik-Institut, Universität Zürich, Zürich, Switzerland
R. B. Appleby />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
O. Aquines Gutierrez />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
F. Archilli />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
L. Arrabito />CC-IN2P3, CNRS/IN2P3, Lyon-Villeurbanne, France
A. Artamonov />Institute for High Energy Physics (IHEP), Protvino, Russia
M. Artuso />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Syracuse University, Syracuse, NY United States
E. Aslanides />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
G. Auriemma />Sezione INFN di Roma La Sapienza, Roma, Italy
S. Bachmann />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
J. J. Back />Department of Physics, University of Warwick, Coventry, United Kingdom
D. S. Bailey />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
V. Balagura />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
W. Baldini />Sezione INFN di Ferrara, Ferrara, Italy
R. J. Barlow />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
C. Barschel />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Barsuk />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
W. Barter />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
A. Bates />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
C. Bauer />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
Th. Bauer />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
A. Bay />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
I. Bediaga />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
S. Belogurov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
K. Belous />Institute for High Energy Physics (IHEP), Protvino, Russia
I. Belyaev />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
E. Ben-Haim />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
M. Benayoun />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
G. Bencivenni />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
S. Benson />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
J. Benton />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
R. Bernet />Physik-Institut, Universität Zürich, Zürich, Switzerland
M.-O. Bettler />Sezione INFN di Firenze, Firenze, Italy
M. van Beuzekom />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
A. Bien />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
S. Bifani />School of Physics, University College Dublin, Dublin, Ireland
T. Bird />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
A. Bizzeti />Sezione INFN di Firenze, Firenze, Italy
P. M. Bjørnstad />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
T. Blake />European Organization for Nuclear Research (CERN), Geneva, Switzerland
F. Blanc />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
C. Blanks />Imperial College London, London, United Kingdom
J. Blouw />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
S. Blusk />Syracuse University, Syracuse, NY United States
A. Bobrov />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
V. Bocci />Sezione INFN di Roma La Sapienza, Roma, Italy
A. Bondar />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
N. Bondar />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
W. Bonivento />Sezione INFN di Cagliari, Cagliari, Italy
S. Borghi />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
A. Borgia />Syracuse University, Syracuse, NY United States
T. J. V. Bowcock />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
C. Bozzi />Sezione INFN di Ferrara, Ferrara, Italy
T. Brambach />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
J. van den Brand />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
J. Bressieux />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
D. Brett />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
M. Britsch />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
T. Britton />Syracuse University, Syracuse, NY United States
N. H. Brook />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
H. Brown />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
K. de Bruyn />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
A. Büchler-Germann />Physik-Institut, Universität Zürich, Zürich, Switzerland
I. Burducea />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
A. Bursche />Physik-Institut, Universität Zürich, Zürich, Switzerland
J. Buytaert />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Cadeddu />Sezione INFN di Cagliari, Cagliari, Italy
O. Callot />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
M. Calvi />Sezione INFN di Milano Bicocca, Milano, Italy
M. Calvo Gomez />Universitat de Barcelona, Barcelona, Spain
A. Camboni />Universitat de Barcelona, Barcelona, Spain
P. Campana />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Carbone />Sezione INFN di Bologna, Bologna, Italy
G. Carboni />Sezione INFN di Roma Tor Vergata, Roma, Italy
R. Cardinale />Sezione INFN di Genova, Genova, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Cardini />Sezione INFN di Cagliari, Cagliari, Italy
L. Carson />Imperial College London, London, United Kingdom
K. Carvalho Akiba />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
G. Casse />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
M. Cattaneo />European Organization for Nuclear Research (CERN), Geneva, Switzerland
Ch. Cauet />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Charles />Department of Physics, University of Oxford, Oxford, United Kingdom
Ph. Charpentier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
N. Chiapolini />Physik-Institut, Universität Zürich, Zürich, Switzerland
K. Ciba />European Organization for Nuclear Research (CERN), Geneva, Switzerland
X. Cid Vidal />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
G. Ciezarek />Imperial College London, London, United Kingdom
P. E. L. Clarke />European Organization for Nuclear Research (CERN), Geneva, Switzerland />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Clemencic />European Organization for Nuclear Research (CERN), Geneva, Switzerland
H. V. Cliff />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
J. Closier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Coca />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
V. Coco />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
J. Cogan />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
P. Collins />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Comerma-Montells />Universitat de Barcelona, Barcelona, Spain
F. Constantin />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
A. Contu />Department of Physics, University of Oxford, Oxford, United Kingdom
A. Cook />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
M. Coombes />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
G. Corti />European Organization for Nuclear Research (CERN), Geneva, Switzerland
B. Couturier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. A. Cowan />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. Currie />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
C. D’Ambrosio />European Organization for Nuclear Research (CERN), Geneva, Switzerland
P. David />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
P. N. Y. David />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
I. De Bonis />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
S. De Capua />Sezione INFN di Roma Tor Vergata, Roma, Italy
M. De Cian />Physik-Institut, Universität Zürich, Zürich, Switzerland
F. De Lorenzi />School of Physics, University College Dublin, Dublin, Ireland
J. M. De Miranda />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
L. De Paula />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. De Simone />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
D. Decamp />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
M. Deckenhoff />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
H. Degaudenzi />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
L. Del Buono />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
C. Deplano />Sezione INFN di Cagliari, Cagliari, Italy
D. Derkach />Sezione INFN di Bologna, Bologna, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
O. Deschamps />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
F. Dettori />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
J. Dickens />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
H. Dijkstra />European Organization for Nuclear Research (CERN), Geneva, Switzerland
P. Diniz Batista />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
F. Domingo Bonal />Universitat de Barcelona, Barcelona, Spain
S. Donleavy />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
F. Dordei />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
A. Dosil Suárez />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
D. Dossett />Department of Physics, University of Warwick, Coventry, United Kingdom
A. Dovbnya />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
F. Dupertuis />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. Dzhelyadin />Institute for High Energy Physics (IHEP), Protvino, Russia
A. Dziurda />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
S. Easo />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
U. Egede />Imperial College London, London, United Kingdom
V. Egorychev />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
S. Eidelman />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
D. van Eijk />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
F. Eisele />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
S. Eisenhardt />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
R. Ekelhof />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
L. Eklund />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
Ch. Elsasser />Physik-Institut, Universität Zürich, Zürich, Switzerland
D. Elsby />University of Birmingham, Birmingham, United Kingdom
D. Esperante Pereira />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Falabella />Sezione INFN di Bologna, Bologna, Italy />Sezione INFN di Ferrara, Ferrara, Italy
E. Fanchini />Sezione INFN di Milano Bicocca, Milano, Italy
C. Färber />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
G. Fardell />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
C. Farinelli />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
S. Farry />School of Physics, University College Dublin, Dublin, Ireland
V. Fave />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
V. Fernandez Albor />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
M. Ferro-Luzzi />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Filippov />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
C. Fitzpatrick />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Fontana />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
F. Fontanelli />Sezione INFN di Genova, Genova, Italy
R. Forty />European Organization for Nuclear Research (CERN), Geneva, Switzerland
O. Francisco />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
M. Frank />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Frei />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Frosini />Sezione INFN di Firenze, Firenze, Italy
S. Furcas />Sezione INFN di Milano Bicocca, Milano, Italy
A. Gallas Torreira />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
D. Galli />Sezione INFN di Bologna, Bologna, Italy
M. Gandelman />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. Gandini />Department of Physics, University of Oxford, Oxford, United Kingdom
Y. Gao />Center for High Energy Physics, Tsinghua University, Beijing, China
J-C. Garnier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. Garofoli />Syracuse University, Syracuse, NY United States
J. Garra Tico />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
L. Garrido />Universitat de Barcelona, Barcelona, Spain
D. Gascon />Universitat de Barcelona, Barcelona, Spain
C. Gaspar />European Organization for Nuclear Research (CERN), Geneva, Switzerland
R. Gauld />Department of Physics, University of Oxford, Oxford, United Kingdom
N. Gauvin />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. Gersabeck />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. Gershon />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Department of Physics, University of Warwick, Coventry, United Kingdom
Ph. Ghez />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
V. Gibson />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
V. V. Gligorov />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Göbel />Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
D. Golubkov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
A. Golutvin />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Imperial College London, London, United Kingdom
A. Gomes />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
H. Gordon />Department of Physics, University of Oxford, Oxford, United Kingdom
M. Grabalosa Gándara />Universitat de Barcelona, Barcelona, Spain
R. Graciani Diaz />Universitat de Barcelona, Barcelona, Spain
L. A. Granado Cardoso />European Organization for Nuclear Research (CERN), Geneva, Switzerland
E. Graugés />Universitat de Barcelona, Barcelona, Spain
G. Graziani />Sezione INFN di Firenze, Firenze, Italy
A. Grecu />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
E. Greening />Department of Physics, University of Oxford, Oxford, United Kingdom
S. Gregson />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
B. Gui />Syracuse University, Syracuse, NY United States
E. Gushchin />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
Yu. Guz />Institute for High Energy Physics (IHEP), Protvino, Russia
T. Gys />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Hadjivasiliou />Syracuse University, Syracuse, NY United States
G. Haefeli />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
C. Haen />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. C. Haines />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
T. Hampson />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
S. Hansmann-Menzemer />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
R. Harji />Imperial College London, London, United Kingdom
N. Harnew />Department of Physics, University of Oxford, Oxford, United Kingdom
J. Harrison />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
P. F. Harrison />Department of Physics, University of Warwick, Coventry, United Kingdom
T. Hartmann />Physikalisches Institut, Universität Rostock, Rostock, Germany
J. He />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
V. Heijne />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
K. Hennessy />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
P. Henrard />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
J. A. Hernando Morata />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
E. van Herwijnen />European Organization for Nuclear Research (CERN), Geneva, Switzerland
E. Hicks />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
K. Holubyev />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
P. Hopchev />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
W. Hulsbergen />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
P. Hunt />Department of Physics, University of Oxford, Oxford, United Kingdom
T. Huse />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
R. S. Huston />School of Physics, University College Dublin, Dublin, Ireland
D. Hutchcroft />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
D. Hynds />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
V. Iakovenko />Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
P. Ilten />School of Physics, University College Dublin, Dublin, Ireland
J. Imong />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
R. Jacobsson />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Jaeger />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Jahjah Hussein />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
E. Jans />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
F. Jansen />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
P. Jaton />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
B. Jean-Marie />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
F. Jing />Center for High Energy Physics, Tsinghua University, Beijing, China
M. John />Department of Physics, University of Oxford, Oxford, United Kingdom
D. Johnson />Department of Physics, University of Oxford, Oxford, United Kingdom
C. R. Jones />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
B. Jost />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Kaballo />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
S. Kandybei />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
M. Karacson />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. M. Karbach />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
J. Keaveney />School of Physics, University College Dublin, Dublin, Ireland
I. R. Kenyon />University of Birmingham, Birmingham, United Kingdom
U. Kerzel />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. Ketel />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
A. Keune />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
B. Khanji />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
Y. M. Kim />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Knecht />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. F. Koopman />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
P. Koppenburg />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
M. Korolev />Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
A. Kozlinskiy />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
L. Kravchuk />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
K. Kreplin />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Kreps />Department of Physics, University of Warwick, Coventry, United Kingdom
G. Krocker />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
P. Krokovny />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
F. Kruse />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
K. Kruzelecki />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Kucharczyk />Sezione INFN di Milano Bicocca, Milano, Italy />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. Kvaratskheliya />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
V. N. La Thi />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
D. Lacarrere />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. Lafferty />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
A. Lai />Sezione INFN di Cagliari, Cagliari, Italy
D. Lambert />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
R. W. Lambert />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
E. Lanciotti />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. Lanfranchi />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
C. Langenbruch />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
T. Latham />Department of Physics, University of Warwick, Coventry, United Kingdom
C. Lazzeroni />University of Birmingham, Birmingham, United Kingdom
R. Le Gac />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
J. van Leerdam />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
J.-P. Lees />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
R. Lefèvre />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
A. Leflat />Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. Lefrançois />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
O. Leroy />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
T. Lesiak />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
L. Li />Center for High Energy Physics, Tsinghua University, Beijing, China
L. Li Gioi />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
M. Lieng />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Liles />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
R. Lindner />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Linn />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
B. Liu />Center for High Energy Physics, Tsinghua University, Beijing, China
G. Liu />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. von Loeben />Sezione INFN di Milano Bicocca, Milano, Italy
J. H. Lopes />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
E. Lopez Asamar />Universitat de Barcelona, Barcelona, Spain
N. Lopez-March />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
H. Lu />Center for High Energy Physics, Tsinghua University, Beijing, China
J. Luisier />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
A. Mac Raighne />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
F. Machefert />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
I. V. Machikhiliyan />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
F. Maciuc />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
O. Maev />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. Magnin />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
S. Malde />Department of Physics, University of Oxford, Oxford, United Kingdom
R. M. D. Mamunur />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. Manca />Sezione INFN di Cagliari, Cagliari, Italy
G. Mancinelli />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
N. Mangiafave />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
U. Marconi />Sezione INFN di Bologna, Bologna, Italy
R. Märki />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
J. Marks />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
G. Martellotti />Sezione INFN di Roma La Sapienza, Roma, Italy
A. Martens />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
L. Martin />Department of Physics, University of Oxford, Oxford, United Kingdom
A. Martín Sánchez />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
D. Martinez Santos />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Massafferri />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
Z. Mathe />School of Physics, University College Dublin, Dublin, Ireland
C. Matteuzzi />Sezione INFN di Milano Bicocca, Milano, Italy
M. Matveev />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
E. Maurice />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
B. Maynard />Syracuse University, Syracuse, NY United States
A. Mazurov />Sezione INFN di Ferrara, Ferrara, Italy />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. McGregor />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
R. McNulty />School of Physics, University College Dublin, Dublin, Ireland
M. Meissner />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Merk />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
J. Merkel />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
R. Messi />Sezione INFN di Roma Tor Vergata, Roma, Italy
S. Miglioranzi />European Organization for Nuclear Research (CERN), Geneva, Switzerland
D. A. Milanes />Sezione INFN di Bari, Bari, Italy
M.-N. Minard />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
J. Molina Rodriguez />Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
S. Monteil />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
D. Moran />School of Physics, University College Dublin, Dublin, Ireland
P. Morawski />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
R. Mountain />Syracuse University, Syracuse, NY United States
I. Mous />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
F. Muheim />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
K. Müller />Physik-Institut, Universität Zürich, Zürich, Switzerland
R. Muresan />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
B. Muryn />AGH University of Science and Technology, Kraków, Poland
B. Muster />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. Musy />Universitat de Barcelona, Barcelona, Spain
J. Mylroie-Smith />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
P. Naik />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
T. Nakada />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. Nandakumar />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
I. Nasteva />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
M. Nedos />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Needham />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
N. Neufeld />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. D. Nguyen />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
C. Nguyen-Mau />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. Nicol />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
V. Niess />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
N. Nikitin />Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
A. Nomerotski />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Department of Physics, University of Oxford, Oxford, United Kingdom
A. Novoselov />Institute for High Energy Physics (IHEP), Protvino, Russia
A. Oblakowska-Mucha />AGH University of Science and Technology, Kraków, Poland
V. Obraztsov />Institute for High Energy Physics (IHEP), Protvino, Russia
S. Oggero />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
S. Ogilvy />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
O. Okhrimenko />Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
R. Oldeman />Sezione INFN di Cagliari, Cagliari, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Orlandea />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
J. M. Otalora Goicochea />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. Owen />Imperial College London, London, United Kingdom
K. Pal />Syracuse University, Syracuse, NY United States
J. Palacios />Physik-Institut, Universität Zürich, Zürich, Switzerland
A. Palano />Sezione INFN di Bari, Bari, Italy
M. Palutan />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
J. Panman />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Papanestis />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
M. Pappagallo />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
C. Parkes />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
C. J. Parkinson />Imperial College London, London, United Kingdom
G. Passaleva />Sezione INFN di Firenze, Firenze, Italy
G. D. Patel />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
M. Patel />Imperial College London, London, United Kingdom
S. K. Paterson />Imperial College London, London, United Kingdom
G. N. Patrick />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
C. Patrignani />Sezione INFN di Genova, Genova, Italy
C. Pavel-Nicorescu />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
A. Pazos Alvarez />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Pellegrino />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
G. Penso />Sezione INFN di Roma La Sapienza, Roma, Italy
M. Pepe Altarelli />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Perazzini />Sezione INFN di Bologna, Bologna, Italy
D. L. Perego />Sezione INFN di Milano Bicocca, Milano, Italy
E. Perez Trigo />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Pérez-Calero Yzquierdo />Universitat de Barcelona, Barcelona, Spain
P. Perret />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
M. Perrin-Terrin />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
G. Pessina />Sezione INFN di Milano Bicocca, Milano, Italy
A. Petrella />Sezione INFN di Ferrara, Ferrara, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Petrolini />Sezione INFN di Genova, Genova, Italy
A. Phan />Syracuse University, Syracuse, NY United States
E. Picatoste Olloqui />Universitat de Barcelona, Barcelona, Spain
B. Pie Valls />Universitat de Barcelona, Barcelona, Spain
B. Pietrzyk />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
T. Pilař />Department of Physics, University of Warwick, Coventry, United Kingdom
D. Pinci />Sezione INFN di Roma La Sapienza, Roma, Italy
R. Plackett />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
S. Playfer />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Plo Casasus />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
G. Polok />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
A. Poluektov />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia />Department of Physics, University of Warwick, Coventry, United Kingdom
E. Polycarpo />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
D. Popov />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
B. Popovici />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
C. Potterat />Universitat de Barcelona, Barcelona, Spain
A. Powell />Department of Physics, University of Oxford, Oxford, United Kingdom
J. Prisciandaro />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
V. Pugatch />Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
A. Puig Navarro />Universitat de Barcelona, Barcelona, Spain
W. Qian />Syracuse University, Syracuse, NY United States
J. H. Rademacker />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
B. Rakotomiaramanana />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. S. Rangel />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
I. Raniuk />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
G. Raven />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
S. Redford />Department of Physics, University of Oxford, Oxford, United Kingdom
M. M. Reid />Department of Physics, University of Warwick, Coventry, United Kingdom
A. C. dos Reis />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
S. Ricciardi />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
A. Richards />Imperial College London, London, United Kingdom
K. Rinnert />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
D. A. Roa Romero />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
P. Robbe />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
E. Rodrigues />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
F. Rodrigues />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. Rodriguez Perez />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
G. J. Rogers />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
S. Roiser />European Organization for Nuclear Research (CERN), Geneva, Switzerland
V. Romanovsky />Institute for High Energy Physics (IHEP), Protvino, Russia
M. Rosello />Universitat de Barcelona, Barcelona, Spain
J. Rouvinet />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
T. Ruf />European Organization for Nuclear Research (CERN), Geneva, Switzerland
H. Ruiz />Universitat de Barcelona, Barcelona, Spain
G. Sabatino />Sezione INFN di Roma Tor Vergata, Roma, Italy
J. J. Saborido Silva />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
N. Sagidova />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
P. Sail />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
B. Saitta />Sezione INFN di Cagliari, Cagliari, Italy
C. Salzmann />Physik-Institut, Universität Zürich, Zürich, Switzerland
M. Sannino />Sezione INFN di Genova, Genova, Italy
R. Santacesaria />Sezione INFN di Roma La Sapienza, Roma, Italy
C. Santamarina Rios />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
R. Santinelli />European Organization for Nuclear Research (CERN), Geneva, Switzerland
E. Santovetti />Sezione INFN di Roma Tor Vergata, Roma, Italy
M. Sapunov />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
A. Sarti />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
C. Satriano />Sezione INFN di Roma La Sapienza, Roma, Italy
A. Satta />Sezione INFN di Roma Tor Vergata, Roma, Italy
M. Savrie />Sezione INFN di Ferrara, Ferrara, Italy
D. Savrina />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
P. Schaack />Imperial College London, London, United Kingdom
M. Schiller />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
S. Schleich />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Schlupp />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Schmelling />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
B. Schmidt />European Organization for Nuclear Research (CERN), Geneva, Switzerland
O. Schneider />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
A. Schopper />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M.-H. Schune />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
R. Schwemmer />European Organization for Nuclear Research (CERN), Geneva, Switzerland
B. Sciascia />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
A. Sciubba />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
M. Seco />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Semennikov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
K. Senderowska />AGH University of Science and Technology, Kraków, Poland
I. Sepp />Imperial College London, London, United Kingdom
N. Serra />Physik-Institut, Universität Zürich, Zürich, Switzerland
J. Serrano />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
P. Seyfert />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Shapkin />Institute for High Energy Physics (IHEP), Protvino, Russia
I. Shapoval />European Organization for Nuclear Research (CERN), Geneva, Switzerland />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
P. Shatalov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
Y. Shcheglov />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
T. Shears />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
L. Shekhtman />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
O. Shevchenko />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
V. Shevchenko />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
A. Shires />Imperial College London, London, United Kingdom
R. Silva Coutinho />Department of Physics, University of Warwick, Coventry, United Kingdom
T. Skwarnicki />Syracuse University, Syracuse, NY United States
N. A. Smith />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
E. Smith />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom />Department of Physics, University of Oxford, Oxford, United Kingdom
K. Sobczak />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
F. J. P. Soler />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
A. Solomin />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
F. Soomro />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
B. Souza De Paula />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
B. Spaan />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
A. Sparkes />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
P. Spradlin />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
F. Stagni />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Stahl />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
O. Steinkamp />Physik-Institut, Universität Zürich, Zürich, Switzerland
S. Stoica />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
S. Stone />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Syracuse University, Syracuse, NY United States
B. Storaci />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
M. Straticiuc />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
U. Straumann />Physik-Institut, Universität Zürich, Zürich, Switzerland
V. K. Subbiah />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Swientek />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Szczekowski />Soltan Institute for Nuclear Studies, Warsaw, Poland
P. Szczypka />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
T. Szumlak />AGH University of Science and Technology, Kraków, Poland
S. T’Jampens />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
E. Teodorescu />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
F. Teubert />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Thomas />Department of Physics, University of Oxford, Oxford, United Kingdom
E. Thomas />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. van Tilburg />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
V. Tisserand />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
M. Tobin />Physik-Institut, Universität Zürich, Zürich, Switzerland
S. Topp-Joergensen />Department of Physics, University of Oxford, Oxford, United Kingdom
N. Torr />Department of Physics, University of Oxford, Oxford, United Kingdom
E. Tournefier />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France />Imperial College London, London, United Kingdom
S. Tourneur />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. T. Tran />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
A. Tsaregorodtsev />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
N. Tuning />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
M. Ubeda Garcia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Ukleja />Soltan Institute for Nuclear Studies, Warsaw, Poland
P. Urquijo />Syracuse University, Syracuse, NY United States
U. Uwer />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
V. Vagnoni />Sezione INFN di Bologna, Bologna, Italy
G. Valenti />Sezione INFN di Bologna, Bologna, Italy
R. Vazquez Gomez />Universitat de Barcelona, Barcelona, Spain
P. Vazquez Regueiro />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
S. Vecchi />Sezione INFN di Ferrara, Ferrara, Italy
J. J. Velthuis />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
M. Veltri />Sezione INFN di Firenze, Firenze, Italy
B. Viaud />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
I. Videau />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
D. Vieira />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
X. Vilasis-Cardona />Universitat de Barcelona, Barcelona, Spain
J. Visniakov />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Vollhardt />Physik-Institut, Universität Zürich, Zürich, Switzerland
D. Volyanskyy />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
D. Voong />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
A. Vorobyev />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
H. Voss />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
S. Wandernoth />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
J. Wang />Syracuse University, Syracuse, NY United States
D. R. Ward />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
N. K. Watson />University of Birmingham, Birmingham, United Kingdom
A. D. Webber />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
D. Websdale />Imperial College London, London, United Kingdom
M. Whitehead />Department of Physics, University of Warwick, Coventry, United Kingdom
D. Wiedner />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
L. Wiggers />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
G. Wilkinson />Department of Physics, University of Oxford, Oxford, United Kingdom
M. P. Williams />Department of Physics, University of Warwick, Coventry, United Kingdom />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
M. Williams />Imperial College London, London, United Kingdom
F. F. Wilson />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
J. Wishahi />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Witek />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
W. Witzeling />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. A. Wotton />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
K. Wyllie />European Organization for Nuclear Research (CERN), Geneva, Switzerland
Y. Xie />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
F. Xing />Department of Physics, University of Oxford, Oxford, United Kingdom
Z. Xing />Syracuse University, Syracuse, NY United States
Z. Yang />Center for High Energy Physics, Tsinghua University, Beijing, China
R. Young />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
O. Yushchenko />Institute for High Energy Physics (IHEP), Protvino, Russia
M. Zangoli />Sezione INFN di Bologna, Bologna, Italy
M. Zavertyaev />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
F. Zhang />Center for High Energy Physics, Tsinghua University, Beijing, China
L. Zhang />Syracuse University, Syracuse, NY United States
W. C. Zhang />School of Physics, University College Dublin, Dublin, Ireland
Y. Zhang />Center for High Energy Physics, Tsinghua University, Beijing, China
A. Zhelezov />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
L. Zhong />Center for High Energy Physics, Tsinghua University, Beijing, China
A. Zvyagin />European Organization for Nuclear Research (CERN), Geneva, Switzerland

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First evidence of direct CP violation in charmless two-body decays of Bs0 mesons

Using a data sample corresponding to an integrated luminosity of 0.35  fb-1 collected by LHCb in 2011, we report the first evidence of CP violation in the decays of Bs0} mesons to K±π∓ pairs, ACP(Bs0→Kπ)=0.27±0.08(stat)±0.02(syst), with a significance of 3.3σ. Furthermore, we report the most precise measurement of CP violation in the decays of B0 mesons to K±π∓ pairs, ACP(B0→Kπ)=-0.088±0.011(stat)±0.008(syst), with a significance exceeding 6σ.

Differential branching fraction and angular analysis of the decay B0 → K*0 μ+ μ-

The angular distributions and the partial branching fraction of the decay B0 → K*0 μ+ μ- are studied by using an integrated luminosity of 0.37  fb(-1) of data collected with the LHCb detector. The forward-backward asymmetry of the muons, A(FB), the fraction of longitudinal polarization, F(L), and the partial branching fraction dB/dq2 are determined as a function of the dimuon invariant mass. The measurements are in good agreement with the standard model predictions and are the most precise to date. In the dimuon invariant mass squared range 1.00-6.00  GeV2/c4, the results are A(FB)=-0.06(-0.14)(+0.13)±0.04, F(L)=0.55±0.10±0.03, and dB/dq2=(0.42±0.06±0.03)×10(-7)  c4/GeV2. In each case, the first error is statistical and the second systematic.

First observation of the decays B(0) → D(+)K(-)π(+)π(-) and B(-) → D(0)K(-)π(+)π(-)

First observations of the Cabibbo-suppressed decays B(0) → D(+)K(-)π(+)π(-) and B(-) → D(0)K(-)π(+)π(-) are reported using 35 pb(-1) of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B(B(0) → D(+)K(-)π(+)π(-))/B(B(0) → D(+)π(-)π(+)π(-))=(5.9±1.1±0.5)×10(-2) and B(B(-) → D(0)K(-)π(+)π(-))/B(B(-) → D(0)π(-)π(+)π(-))=(9.4±1.3±0.9)×10(-2), where the uncertainties are statistical and systematic, respectively. The B(-) → D(0)K(-)π(+)π(-) decay is particularly interesting, as it can be used in a similar way to B(-) → D(0)K(-) to measure the Cabibbo-Kobayashi-Maskawa phase γ.

Observation of B(s)(0) → J/ψf(2)'(1525) in J/ψK+ K- final states

The decay B(s)(0) → J/ψK+ K- is investigated using 0.16  fb(-1) of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/ψϕ channel is well known, final states at higher K+ K- masses have not previously been studied. In the K+ K- mass spectrum we observe a significant signal in the f(2)'(1525) region as well as a nonresonant component. After subtracting the nonresonant component, we find B(B(s)(0) → J/ψf(2)'(1525))/B(B(s)(0) → J/ψϕ) = (26.4 ± 2.7 ± 2.4)%.

Evidence for CP violation in time-integrated D0→h(-)h(+) decay rates

A search for time-integrated CP violation in D(0)→h(-)h(+) (h=K, π) decays is presented using 0.62 fb(-1) of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D(*+)→D(0)π(+) and D(*-)→D[over ¯](0)π(-) decay chains. The difference in CP asymmetry between D(0)→K(-)K(+) and D(0)→π(-)π(+), ΔA(CP)≡A(CP)(K(-)K(+))-A(CP)(π(-)π(+)), is measured to be [-0.82±0.21(stat)±0.11(syst)]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations.

Search for lepton number violating decays B+ → π- μ+ μ+ and B+ → K- μ+ μ+

A search is performed for the lepton number violating decay B+ → h- μ+ μ+, where h- represents a K- or a π-, using an integrated luminosity of 36  pb(-1) of data collected with the LHCb detector. The decay is forbidden in the standard model but allowed in models with a Majorana neutrino. No signal is observed in either channel and limits of B(B+ → K- μ+ μ+) < 5.4×10(-8) and B(B+ → π- μ+ μ+) < 5.8×10(-8) are set at the 95% confidence level. These improve the previous best limits by factors of 40 and 30, respectively.

Measurement of the CP-violating phase ϕ(s) in the decay B(s)(0) → J/ψϕ

We present a measurement of the time-dependent CP-violating asymmetry in B(s)(0) → J/ψϕ decays, using data collected with the LHCb detector at the LHC. The decay time distribution of B(s)(0) → J/ψϕ is characterized by the decay widths Γ(H) and Γ(L) of the heavy and light mass eigenstates, respectively, of the B(s)(0) - B(s)(0) system and by a CP-violating phase ϕ(s). In a sample of about 8500 B(s)(0) → J/ψϕ events isolated from 0.37  fb(-1) of pp collisions at sqrt[s] = 7  TeV, we measure ϕ(s) = 0.15 ± 0.18(stat) ± 0.06(syst)  rad. We also find an average B(s)(0) decay width Γ(s) ≡ (Γ(L) + Γ(H))/2 = 0.657 ± 0.009(stat) ± 0.008(syst)  ps(-1) and a decay width difference ΔΓ(s) ≡ Γ(L) - Γ(H) = 0.123 ± 0.029(stat) ± 0.011(syst)  ps(-1). Our measurement is insensitive to the transformation (ϕ(s),ΔΓ(s)) ↦ (π - ϕ(s), -ΔΓ(s)).