Is there a non-Standard-Model contribution in non-leptonic b -> s decays?
High Energy Physics - Phenomenology
2009-01-06 v2
Abstract
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.
Keywords
Cite
@article{arxiv.0803.3729,
title = {Is there a non-Standard-Model contribution in non-leptonic b -> s decays?},
author = {Thorsten Feldmann and Martin Jung and Thomas Mannel},
journal= {arXiv preprint arXiv:0803.3729},
year = {2009}
}
Comments
25 pages, 7 figures, some references added, brief discussion of B -> J/psi \pi included