Search for the Rare Decay B0_s -> phi mu^+ mu- with the D0 Detector

Details Search for the Rare Decay B0_s -> phi mu^+ mu- with the D0 Detector Search for the Rare Decay B0_s -> phi mu^+ mu- with the D0 Detector

2006-04-06

arxiv.org/abs/hep-ex/0604015v1

Phys.Rev.D74:031107,2006

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 figures, LaTeX, to be submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevD.74.031107

We present a search for the flavor-changing neutral current decay B0_s -> phi mu+ mu- using about 0.45 fb^-1 of data collected in p \bar p collisions at sqrt{s} =1.96 TeV with the D{\O}detector at the Fermilab Tevatron Collider. We find an upper limit on the branching ratio of this decay normalized to B0_s -> J/psi phi of B(B0_s -> phi mu+ mu-)/B(B0_s -> J/psi phi) < 4.4\times 10^{-3} at the 95% C.L. Using the central value of the world average branching fraction of B0_s -> J/psi phi, the limit corresponds to B(B0_s -> phi mu+ mu-) < 4.1 \times 10^{-6} at the 95% C.L., the most stringent upper bound to date.

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