期刊
PHYSICS LETTERS B
卷 698, 期 2, 页码 115-122出版社
ELSEVIER
DOI: 10.1016/j.physletb.2011.03.006
关键词
LHC; Hadronic B decays; B-s(0) meson
资金
- CAPES
- CNPq
- FAPERJ
- FINEP (Brazil)
- CERN
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF
- DFG
- HGF
- MPG (Germany)
- SFI (Ireland)
- INFN (Italy)
- FOM
- NWO (Netherlands)
- SCSR (Poland)
- ANCS (Romania)
- MinES of Russia
- Rosatom (Russia)
- MICINN
- XUNGAL
- GENCAT (Spain)
- SNSF
- SER (Switzerland)
- NAS Ukraine (Ukraine)
- STFC (United Kingdom)
- NSF (USA)
- ERC
- Region Auvergne
- Science and Technology Facilities Council [ST/H001093/2, ST/F007094/1, ST/H001085/2, ST/G502412/1, LHCb, ST/H001077/1, ST/K00073X/1, GRIDPP, PP/E000444/1, ST/H006737/1, ST/I002839/1, PP/E002722/1, LHCb Upgrades, ST/I505572/1, ST/G005974/1, PP/E000347/1, ST/H001093/1, ST/H001026/2, ST/H001026/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Physics [0852713] Funding Source: National Science Foundation
- STFC [ST/I505572/1, LHCb, ST/H001077/1, ST/H001093/2, ST/K004646/1, ST/K00073X/1, ST/H001026/2, ST/G005974/1, PP/E000347/1, ST/H001093/1, LHCb Upgrades, PP/E002722/1, ST/G502412/1, ST/F007094/1, ST/I002839/1, ST/H001085/2, ST/H006737/1, ST/H001026/1] Funding Source: UKRI
Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay B-s(0) -> J/psi f(0)(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the B? system. Using a fit to the pi(+)pi(-) mass spectrum with interfering resonances gives R-f0/phi equivalent to inverted right perpendicular(B-s(0) -> J/psi f(0) -> pi(+)pi(-)/inverted right perpendicular(B-s(0) -> J/psi phi,phi -> K+K-) = 0.252(-0.032-0.033)(+0.046+0.027). In the interval +/- 90 MeV around 980 MeV, corresponding to approximately two full Jo widths we also find R' equivalent to inverted right perpendicular(B-s(0) -> J/psi pi(+)pi(-),vertical bar m(pi(+)pi(-))-980 MeV vertical bar<90 MeV)/inverted right perpendicular(B-s(0) -> J/psi phi,phi -> K+K- = 0.162 +/- 0.022 +/- 0.016, where in both cases the uncertainties are statistical and systematic, respectively. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.
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