Search for Bs0μ+μ and Bd0μ+μ Decays in pp¯ Collisions with CDF II

Abstract
We report on a search for Bs0μ+μ and Bd0μ+μ decays in pp¯ collisions at s=1.96TeV using 364   pb1 of data collected by the CDF II detector at the Fermilab Tevatron Collider. After applying all selection requirements, we observe no candidates inside the Bs0 or Bd0 mass windows. The resulting upper limits on the branching fractions are B(Bs0μ+μ)<1.5×107 and B(Bd0μ+μ)<3.9×108 at 90% confidence level.
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