1
|
Munro-Laylim P, Dzuba V, Flambaum V. Effects of the long-range neutrino-mediated force in atomic phenomena. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2160385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | - Vladimir Dzuba
- School of Physics, University of New South Wales, Sydney, Australia
| | - Victor Flambaum
- School of Physics, University of New South Wales, Sydney, Australia
| |
Collapse
|
2
|
Ohayon B, Janka G, Cortinovis I, Burkley Z, Borges LDS, Depero E, Golovizin A, Ni X, Salman Z, Suter A, Vigo C, Prokscha T, Crivelli P. Precision Measurement of the Lamb Shift in Muonium. PHYSICAL REVIEW LETTERS 2022; 128:011802. [PMID: 35061492 DOI: 10.1103/physrevlett.128.011802] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
We report a new measurement of the n=2 Lamb shift in Muonium. Our result of 1047.2(2.3)_{stat}(1.1)_{syst} MHz comprises an order of magnitude improvement upon the previous best measurement. This value matches the theoretical calculation within 1 standard deviation allowing us to set limits on Lorentz and CPT violation in the muonic sector, as well as on new physics coupled to muons and electrons which could provide an explanation of the muon g-2 anomaly.
Collapse
Affiliation(s)
- B Ohayon
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - G Janka
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - I Cortinovis
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Z Burkley
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - L de Sousa Borges
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - E Depero
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - A Golovizin
- P.N. Lebedev Physical Institute, 53 Leninsky prospekt., Moscow 119991, Russia
| | - X Ni
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Z Salman
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - A Suter
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - C Vigo
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - T Prokscha
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - P Crivelli
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zürich, Switzerland
| |
Collapse
|
3
|
Paul N, Bian G, Azuma T, Okada S, Indelicato P. Testing Quantum Electrodynamics with Exotic Atoms. PHYSICAL REVIEW LETTERS 2021; 126:173001. [PMID: 33988393 DOI: 10.1103/physrevlett.126.173001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/17/2020] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Precision study of few-electron, high-Z ions is a privileged field for probing high-field, bound-state quantum electrodynamics (BSQED). However, the accuracy of such tests is plagued by nuclear uncertainties, which are often larger than the BSQED effects under investigation. We propose an alternative method with exotic atoms and show that transitions may be found between circular Rydberg states where nuclear contributions are vanishing while BSQED effects remain large. When probed with newly available quantum sensing detectors, these systems offer gains in sensitivity of 1 to 2 orders of magnitude, while the mean electric field largely exceeds the Schwinger limit.
Collapse
Affiliation(s)
- Nancy Paul
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France, Case 74; 4, place Jussieu, F-75005 Paris, France
| | - Guojie Bian
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France, Case 74; 4, place Jussieu, F-75005 Paris, France
- Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, 100088 Beijing, China
| | - Toshiyuki Azuma
- Atomic, Molecular and Optical Physics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
| | - Shinji Okada
- Chubu University, Kasugai, Aichi 487-8501, Japan
| | - Paul Indelicato
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France, Case 74; 4, place Jussieu, F-75005 Paris, France
| |
Collapse
|
4
|
Gurung L, Babij TJ, Hogan SD, Cassidy DB. Precision Microwave Spectroscopy of the Positronium n=2 Fine Structure. PHYSICAL REVIEW LETTERS 2020; 125:073002. [PMID: 32857572 DOI: 10.1103/physrevlett.125.073002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
We report a new measurement of the positronium (Ps) 2^{3}S_{1}→2^{3}P_{0} interval. Slow Ps atoms, optically excited to the radiatively metastable 2^{3}S_{1} level, flew through a microwave radiation field tuned to drive the transition to the short-lived 2^{3}P_{0} level, which was detected via the time spectrum of subsequent ground state Ps annihilation radiation. After accounting for Zeeman shifts we obtain a transition frequency ν_{0}=18501.02±0.61 MHz, which is not in agreement with the theoretical value of ν_{0}=18498.25±0.08 MHz.
Collapse
Affiliation(s)
- L Gurung
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - T J Babij
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - S D Hogan
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - D B Cassidy
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| |
Collapse
|
5
|
Strasser P, Abe M, Aoki M, Choi S, Fukao Y, Higashi Y, Higuchi T, Iinuma H, Ikedo Y, Ishida K, Ito T, Ito TU, Iwasaki M, Kadono R, Kamigaito O, Kanda S, Kawagoe K, Kawall D, Kawamura N, Kitaguchi M, Koda A, Kojima KM, Kubo K, Matama M, Matsuda Y, Matsudate Y, Mibe T, Miyake Y, Mizutani T, Nagamine K, Nishimura S, Ogitsu T, Saito N, Sasaki K, Seo S, Shimizu HM, Shimomura K, Suehara T, Tajima M, Tanaka KS, Tanaka T, Tojo J, Tomono D, Torii HA, Torikai E, Toyoda A, Tsutsumi Y, Ueno K, Ueno Y, Yagi D, Yamamoto A, Yamanaka T, Yamazaki T, Yasuda H, Yoshida M, Yoshioka T. New precise measurements of muonium hyperfine structure at J-PARC MUSE. EPJ WEB OF CONFERENCES 2019. [DOI: 10.1051/epjconf/201919800003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
High precision measurements of the ground state hyperfine structure (HFS) of muonium is a stringent tool for testing bound-state quantum electrodynamics (QED) theory, determining fundamental constants of the muon magnetic moment and mass, and searches for new physics. Muonium is the most suitable system to test QED because both theoretical and experimental values can be precisely determined. Previous measurements were performed decades ago at LAMPF with uncertainties mostly dominated by statistical errors. At the J-PARC Muon Science Facility (MUSE), the MuSEUM collaboration is planning complementary measurements of muonium HFS both at zero and high magnetic field. The new high-intensity muon beam that will soon be available at H-Line will provide an opportunity to improve the precision of these measurements by one order of magnitude. An overview of the different aspects of these new muonium HFS measurements, the current status of the preparation for high-field measurements, and the latest results at zero field are presented.
Collapse
|