期刊
PHYSICS LETTERS B
卷 726, 期 4-5, 页码 646-655出版社
ELSEVIER
DOI: 10.1016/j.physletb.2013.09.046
关键词
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资金
- CERN
- CAPES (Brazil)
- CNPq (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- NSFC (China)
- CNRS/IN2P3 (France)
- Region Auvergne (France)
- BMBF (Germany)
- DFG (Germany)
- HGF (Germany)
- MPG (Germany)
- SFI (Ireland)
- INFN (Italy)
- FOM (The Netherlands)
- NWO (The Netherlands)
- SCSR (Poland)
- MEN/IFA (Romania)
- MinES (Russia)
- Rosatom (Russia)
- RFBR (Russia)
- NRC Kurchatov Institute (Russia)
- MinECo (Spain)
- XuntaGal (Spain)
- GENCAT (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NAS Ukraine (Ukraine)
- STFC (United Kingdom)
- NSF (USA)
- ERC under FP7
- Science and Technology Facilities Council [PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/L003112/1, ST/L00352X/1, ST/H001093/1, ST/K001361/1, ST/K001604/1 CMS Upgrade, ST/K001256/1, ST/M000761/1, ST/K001604/1 SuperNEMO, ST/K001361/1 ATLAS, ST/H00081X/2, ST/K001604/1 LHCb, ST/L001195/1, LHCb Upgrades, ST/H00081X/1, 1096173, ST/M001474/1, ST/I505572/1, ST/G005974/1, ST/H001085/1, ST/K001310/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/H001069/2, ST/M001431/1, ST/K003593/1 GRIDPP, ST/K00137X/1, ST/K001604/1 T2K, ST/H001093/2, ST/K001418/1, ST/F008015/1, ST/K001604/1, ST/F007094/1, ST/H001085/2, ST/K00140X/1, ST/K001310/1 LHCb, ST/K001361/1 LHCb, ST/H00100X/1, PP/E000355/1, ST/K004646/1, LHCb, 1208164, ST/K001361/1 ATLAS Upgrades, ST/K00140X/1 LHCb, ST/K001310/1 ATLAS Upgrades, ST/L003392/1, ST/K00073X/1, GRIDPP, ST/K000748/1, ST/J004332/1, ST/K001310/1, ST/K001604/1 MICE/UKNF, ST/L001144/1, ST/H00100X/2, ST/K001604/1 GRIDPP, ST/K001604/1 LHCb Upgrades, ST/K003410/1, ST/J005568/1, ST/K001604/1 DMUK, ST/K001310/1 LHCb Upgrades, ST/H006737/1, ST/K000705/1] Funding Source: researchfish
- STFC [ST/L003392/1, PP/E000355/1, ST/F008015/1, ST/H001085/1, ST/L001195/1, ST/H001093/1, ST/H006737/1, ST/H001085/2, ST/K000705/1, ST/K00140X/1, ST/L00352X/1, ST/J005568/1, ST/M000761/1, ST/H001069/2, ST/F007094/1, ST/K001361/1, ST/L003112/1, LHCb Upgrades, ST/I505572/1, LHCb, ST/H00100X/2, ST/L001144/1, ST/H00100X/1, ST/J004332/1, ST/K000748/1, ST/M001431/1, ST/H001093/2, ST/K003410/1, ST/H00081X/1, ST/K004646/1, ST/K00073X/1, ST/K00137X/1, ST/G005974/1, ST/K001604/1, ST/H00081X/2, PP/E000347/1] Funding Source: UKRI
An analysis of B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0 decays is performed with the LHCb experiment. The pp collision data used correspond to integrated luminosities of 1fb(-1) and 2fb(-1) collected at centre-of-mass energies of root s=7TeV and root s=8TeV, respectively. The ratio of branching fractions and the direct CP asymmetries are measured to be B(B+ -> (KSK+)-K-0)/B(B+ -> K-S(0)pi(+)) = 0.064+/-0.009(stat.) +/- 0.004(syst.), A(CP)(B+ -> K-S(0)pi(+)) = -0.022 +/- 0.025 (stat.) +/- 0.010(syst.) and A(CP)(B+ -> (KSK+)-K-0)=-0.21 +/- 0.14(stat.) +/- 0.01(syst.). The data sample taken at root s = 7 TeV is used to search for B+c?K0SK+ decays and results in the upper limit (f(c).B (B-c(+) -> (KSK+)-K-0))/(f(u).B(B+ -> K-S(0)pi(+))) < 5.8 x 10(-2) at 90% confidence level, where f(c) and f(u) denote the hadronisation fractions of a <(b)over bar> quark into a B-c(+) or a B+ meson, respectively. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
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