Constraints on Unparticles from $B_s\to {\mu }^{+}{\mu }^{-}$

Abstract

Unparticle contributions to the recently measured decay mode $B_s\to {\mu }^{+}{\mu }^{-}$ are analyzed. We consider only the scalar unparticles because vector unparticles are expected to provide negligible contributions. Assuming that the relevant coupling constants are real, we present allowed regions of coupling constants and the scaling dimension of the scalar unparticle. While the measured value of the branching ratio is very close to the standard model predictions, one cannot exclude the possible contributions from unparticles.

11 pages, 3 figures, 1 table. Many improvements. PRD accepted version

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Cited by in corpus (4)

• On the difference of time-integrated $CP$ asymmetries in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$ decays: unparticle physics contribution
• $R(K^{(\ast )})$ with vector unparticles
• Constraining unparticle physics from $CP$ violation in Cabibbo-favored decays of D mesons
• Searching for New Physics in $D^0\to {\mu }^{+}{\mu }^{-},e^{+}{e}^{-},{\mu }^{\pm }{e}^{\mp }$ at BES and/or Super Charm-Tau Factory