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Agakishiev G, Arnold O, Balanda A, Belver D, Belyaev AV, Berger-Chen JC, Blanco A, Böhmer M, Boyard JL, Cabanelas P, Chernenko S, Dybczak A, Epple E, Fabbietti L, Fateev OV, Finocchiaro P, Fonte P, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Göbel K, Golubeva M, González-Díaz D, Guber F, Gumberidze M, Heinz T, Hennino T, Holzmann R, Ierusalimov A, Iori I, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Koenig I, Koenig W, Kolb BW, Kornakov G, Kotte R, Krása A, Krizek F, Krücken R, Kuc H, Kühn W, Kugler A, Kurepin A, Ladygin V, Lalik R, Lang S, Lapidus K, Lebedev A, Liu T, Lopes L, Lorenz M, Maier L, Mangiarotti A, Markert J, Metag V, Michalska B, Michel J, Müntz C, Müntzer R, Naumann L, Pachmayer YC, Palka M, Parpottas Y, Pechenov V, Pechenova O, Pietraszko J, Przygoda W, Ramstein B, Reshetin A, Rustamov A, Sadovsky A, Salabura P, Schmah A, Schwab E, Siebenson J, Sobolev YG, Spataro S, Spruck B, Ströbele H, Stroth J, Sturm C, Tarantola A, Teilab K, Tlusty P, Traxler M, Trebacz R, Tsertos H, Vasiliev T, Wagner V, Weber M, Wendisch C, Wüstenfeld J, Yurevich S, Zanevsky YV. Subthreshold Ξ^{-} production in collisions of p(3.5 GeV)+Nb. Phys Rev Lett 2015; 114:212301. [PMID: 26066429 DOI: 10.1103/physrevlett.114.212301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Indexed: 06/04/2023]
Abstract
Results on the production of the double strange cascade hyperon Ξ^{-} are reported for collisions of p(3.5 GeV)+Nb, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. For the first time, subthreshold Ξ^{-} production is observed in proton-nucleus interactions. Assuming a Ξ^{-} phase-space distribution similar to that of Λ hyperons, the production probability amounts to P_{Ξ^{-}}=[2.0±0.4(stat)±0.3(norm)±0.6(syst)]×10^{-4} resulting in a Ξ^{-}/(Λ+Σ^{0}) ratio of P_{Ξ^{-}}/P_{Λ+Σ^{0}}=[1.2±0.3(stat)±0.4(syst)]×10^{-2}. Available model predictions are significantly lower than the measured Ξ^{-} yield.
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Affiliation(s)
- G Agakishiev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - O Arnold
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - A Balanda
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - D Belver
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - A V Belyaev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - J C Berger-Chen
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - A Blanco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - M Böhmer
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - J L Boyard
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - P Cabanelas
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - S Chernenko
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - A Dybczak
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - E Epple
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - L Fabbietti
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - O V Fateev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Finocchiaro
- Instituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, 95125 Catania, Italy
| | - P Fonte
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Friese
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - I Fröhlich
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - T Galatyuk
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - J A Garzón
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - R Gernhäuser
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - K Göbel
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - M Golubeva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | | | - F Guber
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - M Gumberidze
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - T Heinz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Hennino
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - R Holzmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Ierusalimov
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - I Iori
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano, 20133 Milano, Italy
| | - A Ivashkin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - M Jurkovic
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - B Kämpfer
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - T Karavicheva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - I Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - B W Kolb
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - G Kornakov
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - R Kotte
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - A Krása
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - F Krizek
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - R Krücken
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - H Kuc
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - W Kühn
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - A Kugler
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - A Kurepin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - V Ladygin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - R Lalik
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - S Lang
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - K Lapidus
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - A Lebedev
- Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia
| | - T Liu
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - L Lopes
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - M Lorenz
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - L Maier
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - A Mangiarotti
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Markert
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - V Metag
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - B Michalska
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - J Michel
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - C Müntz
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - R Müntzer
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - L Naumann
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Y C Pachmayer
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - M Palka
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - Y Parpottas
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - V Pechenov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Pechenova
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - J Pietraszko
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Przygoda
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - B Ramstein
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - A Reshetin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - A Rustamov
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - A Sadovsky
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - P Salabura
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - A Schmah
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - E Schwab
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J Siebenson
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - Yu G Sobolev
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - S Spataro
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - B Spruck
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - H Ströbele
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - J Stroth
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - C Sturm
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Tarantola
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - K Teilab
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - P Tlusty
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - M Traxler
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - R Trebacz
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - H Tsertos
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - T Vasiliev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - V Wagner
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - M Weber
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - C Wendisch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J Wüstenfeld
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - S Yurevich
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Y V Zanevsky
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
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