期刊
PHYSICS LETTERS B
卷 713, 期 4-5, 页码 378-386出版社
ELSEVIER
DOI: 10.1016/j.physletb.2012.06.032
关键词
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资金
- CAPES
- CNPq
- FAPERJ
- FINEP (Brazil)
- CERN
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF
- DFG
- HGF
- MPG (Germany)
- SFI (Ireland)
- INFN (Italy)
- FOM
- NWO (The Netherlands)
- SCSR (Poland)
- ANCS (Romania)
- MinES of Russia
- MICINN
- XuntaGal
- GENCAT (Spain)
- SNSF
- SER (Switzerland)
- NAS Ukraine (Ukraine)
- STFC (United Kingdom)
- NSF (USA)
- ERC
- Region Auvergne
- Rosatom (Russia)
- Division Of Physics
- Direct For Mathematical & Physical Scien [1040231] Funding Source: National Science Foundation
- Science and Technology Facilities Council [LHCb, PP/E000355/1, ST/H00100X/1, ST/G502412/1, ST/K001361/1 LHCb, ST/K001310/1 LHCb, ST/K00140X/1, ST/K001361/1 ATLAS Upgrades, ST/K001310/1 ATLAS Upgrades, ST/K00073X/1, GRIDPP, ST/K001310/1, ST/L001144/1, ST/H00100X/2, ST/J005614/1, ST/K001310/1 LHCb Upgrades, ST/H006737/1, ST/J004820/1, ST/K000705/1, ST/H001085/2, ST/F007094/1, ST/F008015/1, ST/K001418/1, ST/H001093/2, ST/I002839/1, ST/M001431/1, ST/K000616/1, 1208164, ST/K001361/1 ATLAS, PP/E002722/1, ST/K001256/1, ST/K001361/1, ST/H001093/1, ST/K001361/1 LHCb Upgrades, PP/E000347/1, ST/L001195/1, LHCb Upgrades, ST/L001225/1, ST/M001474/1, ST/I505572/1, ST/G005974/1, ST/H001026/2, ST/K001310/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/H001069/2, ST/H001026/1] Funding Source: researchfish
- STFC [ST/K000705/1, ST/J004820/1, ST/K000616/1, ST/H001085/2, ST/H006737/1, ST/H001026/1, ST/H001093/1, ST/L001195/1, ST/F008015/1, ST/L001225/1, PP/E000355/1, ST/I505572/1, LHCb, ST/K00140X/1, ST/H001069/2, ST/I002839/1, ST/F007094/1, ST/G502412/1, PP/E002722/1, ST/K001361/1, LHCb Upgrades, ST/H001093/2, ST/K00073X/1, ST/H001026/2, ST/G005974/1, PP/E000347/1, ST/H00100X/2, ST/L001144/1, ST/H00100X/1, ST/J005614/1, ST/M001431/1] Funding Source: UKRI
Measurement of the mixing-induced CP-violating phase phi(s) in (B) over bar (0)(s) decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd final state J/psi pi(+)pi(-) are selected in 1 fb(-1) of pp collision data collected at root s = 7 TeV with the LHCb detector. A time-dependent fit to the data yields a value of phi(s) = -0.019(-0.174-0.003)(+0.173+0.004) rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found. (C) 2012 Elsevier B.V. All rights reserved.
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