Supersymmetric effects on Forward Backward asymmetries of $B \to K \ell^+ \ell^-$

Details Supersymmetric effects on Forward Backward asymmetries of $B \to K \ell^+ \ell^-$ Supersymmetric effects on Forward Backward asymmetries of $B \to K \ell^+ \ell^-$

2003-07-22

arxiv.org/abs/hep-ph/0307276v3

Phys.Rev. D69 (2004) 054018

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, RevTeX file including 21 eps figures; version accepted for publication in Phys. Rev. D. Some references added

Scientific paper

10.1103/PhysRevD.69.054018

Leptonic and semi-leptonic rare decays of B-mesons are very clean (both theoretically and experimentally) signatures of any new physics beyond the Standard Model (SM). More specifically the decay \btokll has been theoretically observed to be very sensitive to new physics as the Forward Backward (FB) asymmetry in this decay mode vanishes in the SM. Supersymmetry, however, predicts a non-vanishing value of this asymmetry. In this work we will study the polarized lepton pair FB asymmetry, i.e. the FB asymmetry of the lepton when one (or both) final state lepton(s) are polarized. We will study these asymmetries both within the SM and for Supersymmetric corrections to the SM.

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