Search for the rare decays Bs --&gt;mumu and Bd --&gt;mumu
Creators: name: LHCb Collaboration
name: Aaij, R.
name: Adeva, B.
name: Adinolfi, M.
name: Adrover, C.
name: Affolder, A.
name: Ajaltouni, Z.
name: Albrecht, J.
name: Alessio, F.
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name: Cartelle, P. Alvarez
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name: Amoraal, J.
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name: Gutierrez, O. Aquines
name: Arrabito, L.
name: Artuso, M.
name: Aslanides, E.
name: Auriemma, G.
name: Bachmann, S.
name: Bailey, D. S.
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name: Baldini, W.
name: Barlow, R. J.
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name: Bates, A.
name: Bauer, C.
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name: Bay, A.
name: Bediaga, I.
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name: Benayoun, M.
name: Bencivenni, G.
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Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: A search for the decays Bs--&gt;mumu and Bd--&gt;mumu is performed with about 37 pb^{-1} of pp collisions at sqrt{s} = 7 TeV collected by the LHCb experiment at the Large Hadron Collider at CERN. The observed numbers of events are consistent with the background expectations. The resulting upper limits on the branching ratios are BR(Bs--&gt;mumu) &lt; 5.6 x 10^{-8} and BR(Bd--&gt;mumu) &lt;1.5 x 10^{-8} at 95% confidence level.
description: 18 pages, 5 figures