Rare Semileptonic $B_{s}$ Decays to $η$ and $η'$ mesons in QCD

Details Rare Semileptonic $B_{s}$ Decays to $η$ and $η'$ mesons in QCD Rare Semileptonic $B_{s}$ Decays to $η$ and $η'$ mesons in QCD

2010-08-18

arxiv.org/abs/1008.3175v2

Phys.Rev.D82:116001,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 Pages, 15 Figures and 5 Tables

Scientific paper

10.1103/PhysRevD.82.116001

We analyze the rare semileptonic $B_s \to (\eta, \eta') l^+ l^-$, $(l=e, \mu, \tau)$ and $B_s \to (\eta, \eta') \nu \bar{\nu}$ transitions probing the $\bar s s$ content of the $\eta$ and $\eta'$ mesons via three--point QCD sum rules. We calculate responsible form factors for these transitions in full theory. Using the obtained form factors, we also estimate the related branching fractions and longitudinal lepton polarization asymmetries. Our results are in a good consistency with the predictions of the other existing nonperturbative approaches.

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