Is there a non-Standard-Model contribution in non-leptonic b -> s decays?

Details Is there a non-Standard-Model contribution in non-leptonic b -> s decays? Is there a non-Standard-Model contribution in non-leptonic b -> s decays?

2008-03-26

arxiv.org/abs/0803.3729v2

JHEP 0808:066,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 7 figures, some references added, brief discussion of B -> J/psi \pi included

Scientific paper

10.1088/1126-6708/2008/08/066

Precision measurements of branching fractions and CP asymmetries in non-leptonic b -> s decays reveal certain "puzzles" when compared with Standard Model expectations based on a global fit of the CKM triangle and general theoretical expectations. Without reference to a particular model, we investigate to what extent the (small) discrepancies observed in (B -> J/psi K), (B -> phi K) and (B -> K pi) may constrain new physics in (b -> s q qbar) operators. In particular, we compare on a quantitative level the relative impact of different quark flavours q=c,s,u,d.

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