A search for the flavor-changing neutral current decay $B_s^0 \to \mu^+ \mu^-$ in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV with the D\O\ detector - INSPIRE

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A search for the flavor-changing neutral current decay $B_s^0 \to \mu^+ \mu^-$ in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV with the D\O\ detector

D0

Collaboration

Oct, 2004

7 pages

Published in:

Phys.Rev.Lett. 94 (2005) 071802

e-Print:

hep-ex/0410039 [hep-ex]

DOI:

10.1103/PhysRevLett.94.071802

Report number:

FERMILAB-PUB-04-215-E

Experiments:

FNAL-E-0823

View in:

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Abstract:

We present the results of a search for the flavor-changing neutral current decay B0_s -> mu+ mu- using a data set with integrated luminosity of 240 pb^{-1} of pp(bar) collisions at sqrt{s}=1.96 TeV collected with the D0 detector in Run II of the Fermilab Tevatron collider. We find the upper limit on the branching fraction to be Br(B0_s -> mu+ mu-) \leq 5.0 x 10^{-7} at the 95% C.L. assuming no contributions from the decay B0_d -> mu+ mu- in the signal region. This limit is the most stringent upper bound on the branching fraction B0_s -> mu+ mu- to date.

Note:

7 pages, 3 figures, LaTeX, to be submitted to Physical Review Letters, minor changes to text, reference added Report-no: FERMILAB-Pub-04/215-E

13.20.He
14.40.Nd
12.15.Mm
neutral currents
B mesons
meson leptonic decay
anti-p p: colliding beams
anti-p p: inclusive reaction
B/s0: hadroproduction
B/s0: leptonic decay

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