New Physics in b -> s mu+ mu-: CP-Violating Observables

Details New Physics in b -> s mu+ mu-: CP-Violating Observables New Physics in b -> s mu+ mu-: CP-Violating Observables

2011-03-28

arxiv.org/abs/1103.5344v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, JHEP format, 21 figures. LaTeX error corrected, figures removed and changed, a comparison with previous literature a

Scientific paper

We perform a comprehensive study of the impact of new-physics operators with different Lorentz structures on CP-violating observables involving the b -> s mu+ mu- transition. We examine the effects of new vector-axial vector (VA), scalar-pseudoscalar (SP) and tensor (T) interactions on the CP asymmetries in the branching ratios and forward-backward asymmetries of Bs -> mu mu, B -> Xs mu mu, Bs -> mu mu gamma, B -> K mu mu, and B -> K* mu mu. In B -> K* mu mu, we also explore the direct CP asymmetries in the longitudinal polarization fraction f_L and the angular asymmetries A_T^{(2)} and A_{LT}, as well as the triple-product CP asymmetries A_T^{(im)} and A^{(im)}_{LT}. We find that, in almost all cases, the CP-violating observables are sensitive only to new physics which involves VA operators. The VA new physics may therefore be unambiguously identified by a combined analysis of future measurements of these CP-violating observables.

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