Complementarity of the constraints on New Physics from $B_s\to \mu^+\mu^-$ and from $B\to K \ell^+\ell^-$ decays - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Physical Review D Année : 2012

Complementarity of the constraints on New Physics from $B_s\to \mu^+\mu^-$ and from $B\to K \ell^+\ell^-$ decays

Résumé

We discuss the advantages of combining the experimental bound on ${\rm Br}(B_s\to \mu^+\mu^-)$ and the measured ${\rm Br}(B\to K\ell^+\ell^-)$ to get the model independent constraints on physics beyond the Standard Model. Since the two decays give complementary information, one can study not only the absolute values of the Wilson coefficients that are zero in the Standard Model, but also their phases. To identify the sector in which the new physics might appear, information about the shapes of the transverse asymmetries in $B\to K^\ast \ell^+\ell^-$ at low $q^2$'s can be particularly useful. We also emphasize the importance of measuring the forward-backward asymmetry in $B\to K\ell^+\ell^-$ decay at large $q^2$'s.

Dates et versions

in2p3-00702158 , version 1 (29-05-2012)

Identifiants

Citer

Damir Becirevic, Nejc Kosnik, Federico Mescia, Elia Schneider. Complementarity of the constraints on New Physics from $B_s\to \mu^+\mu^-$ and from $B\to K \ell^+\ell^-$ decays. Physical Review D, 2012, 86, pp.034034. ⟨10.1103/PhysRevD.86.034034⟩. ⟨in2p3-00702158⟩
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