Search for the rare decays Bs -&gt; mu+ mu- and B0 -&gt; mu+ mu-
Creators: name: LHCb Collaboration
name: Aaij, R.
name: Beteta, C. Abellan
name: Adeva, B.
name: Adinolfi, M.
name: Adrover, C.
name: Affolder, A.
name: Ajaltouni, Z.
name: Albrecht, J.
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name: Cartelle, P. Alvarez
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name: Amato, S.
name: Amhis, Y.
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name: Appleby, R. B.
name: Gutierrez, O. Aquines
name: Archilli, F.
name: Arrabito, L.
name: Artamonov, A.
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name: Aslanides, E.
name: Auriemma, G.
name: Bachmann, S.
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name: Bailey, D. S.
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name: Barschel, C.
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name: Bay, A.
name: Bediaga, I.
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name: Benayoun, M.
name: Bencivenni, G.
name: Benson, S.
name: Benton, J.
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name: Bettler, M. -O.
name: van Beuzekom, M.
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name: Bizzeti, A.
name: Bjørnstad, P. M.
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name: Bocci, V.
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name: Bowcock, T. J. V.
name: Bozzi, C.
name: Brambach, T.
name: Brand, J. van den
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name: Brett, D.
name: Britsch, M.
name: Britton, T.
name: Brook, N. H.
name: Brown, H.
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name: Burducea, I.
name: Bursche, A.
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name: Gomez, M. Calvo
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name: Akiba, K. Carvalho
name: Casse, 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; mu+ mu- and B0 -&gt; mu+ mu- is performed with 0.37 fb^-1 of pp collisions at sqrt{s} = 7 TeV collected by the LHCb experiment in 2011. The upper limits on the branching fractions are BR (Bs -&gt; mu+ mu-) &lt; 1.6 x 10^-8 and BR(B0 -&gt; mu+ mu-) &lt; 3.6 x 10^-9 at 95% confidence level. A combination of these results with the LHCb limits obtained with the 2010 dataset leads to BR (Bs -&gt; mu+ mu-) &lt; 1.4 x 10^-8 and BR (B0 -&gt; mu+ mu-) &lt; 3.2 x 10^-9 at 95% confidence level.
description: 6+19 pages, 9 figures; minor changes; matches version accepted in Phys. Lett. B