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81350 |
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|a dc
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|a Williams, Michael
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|a Massachusetts Institute of Technology. Department of Physics
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|a Williams, Michael
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|a Measurement of the B[0 over s]→μ[superscript +]μ[superscript -] Branching Fraction and Search for B[superscript 0]→μ[superscript +]μ[superscript -] Decays at the LHCb Experiment
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|b American Physical Society,
|c 2013-10-09T13:23:57Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/81350
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|a A search for the rare decays B[0 over s]→μ[superscript +]μ[superscript -] and B[superscript 0]→μ[superscript +]μ[superscript -] is performed at the LHCb experiment. The data analyzed correspond to an integrated luminosity of 1 fb[superscript -1] of pp collisions at a center-of-mass energy of 7 TeV and 2 fb[superscript -1] at 8 TeV. An excess of B[0 over s]→μ[superscript +]μ[superscript -] signal candidates with respect to the background expectation is seen with a significance of 4.0 standard deviations. A time-integrated branching fraction of B(B[0 over s]→μ[superscript +]μ[superscript -])=(2.9[+1.1 over -1.0])×10[superscript -9] is obtained and an upper limit of B(B[superscript 0]→μ[superscript +]μ[superscript -])<7.4×10[superscript -10] at 95% confidence level is set. These results are consistent with the standard model expectations.
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|a National Science Foundation (U.S.)
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|a en_US
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|a Article
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|t Physical Review Letters
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