期刊
PHYSICAL REVIEW LETTERS
卷 107, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.191802
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- FMSR (Austria)
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- NSC (Taipei)
- TUBITAK (Turkey)
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- STFC (United Kingdom)
- DOE (U.S.)
- NSF (U.S.)
- STFC [ST/H00081X/2, ST/I505572/1, ST/G502347/1, ST/I002200/1, ST/F007094/1, ST/F006748/1, ST/I000410/1, ST/I005912/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/I002200/1, ST/I005912/1 GRIDPP, ST/I000410/1, ST/I505572/1, ST/F007094/1, ST/I005912/1, GRIDPP, ST/G502347/1, PP/D004284/1, ST/F006748/1, CMS] Funding Source: researchfish
A search for the rare decays B-s(0) --> mu(+)mu(-) and B-0 --> mu(+)mu(-) is performed in pp collisions at root s = 7 TeV, with a data sample corresponding to an integrated luminosity of 1.14 fb(-1), collected by the CMS experiment at the LHC. In both cases, the number of events observed after all selection requirements is consistent with expectations from background and standard-model signal predictions. The resulting upper limits on the branching fractions are B(B-s(0) --> mu(+)mu(-)) < 1.9 x 10(-8) and B(B-0 --> mu(+)mu(-)) < 4.6 x 10(-9), at 95% confidence level.
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