Fourth-generation SM imprints in B -> K^*l^+l^- decays with polarized K^*

Details Fourth-generation SM imprints in B -> K^*l^+l^- decays with polarized K^* Fourth-generation SM imprints in B -> K^*l^+l^- decays with polarized K^*

2011-10-19

arxiv.org/abs/1110.4259v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 10 figures, V2: some of the graphs are modified according to the new data from recent experiments. arXiv admin note:

Scientific paper

The implication of the fourth-generation quarks in the B -> K^*l^+l^- (l=mu,tau) decays, when K^* meson is longitudinally or transversely polarized, is presented. In this context, the dependence of the branching ratio with polarized K^* and the helicity fractions (f_{L,T}) of K^* meson are studied. It is observed that the polarized branching ratios as well as helicity fractions are sensitive to the NP parameters, especially when the final state leptons are tauons. Hence the measurements of these observables at LHC can serve as a good tool to investigate the indirect searches of new physics beyond the Standard Model.

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