Anomalous couplings of the third generation in rare B decays

We study the potential effect of anomalous couplings of the third generation quarks to gauge bosons in rare B decays. We focus on the constraints from flavor changing neutral current processes such as $bto sgamma$ and $bto s ell^+ell^-$. We consider both dimension-four and dimension-five operators a...

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Bibliographic Details
Published in:	Physical review. D, Particles and fields Vol. 61; no. 11
Main Authors:	Burdman, Gustavo, Gonzalez-Garcia, M. C., Novaes, S. F.
Format:	Journal Article
Language:	English
Published:	The American Physical Society 01-06-2000
Subjects:	Nuclear reactions Particles (Nuclear physics) Partícules (Física nuclear) Reaccions nuclears
Online Access:	Get full text
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Summary:	We study the potential effect of anomalous couplings of the third generation quarks to gauge bosons in rare B decays. We focus on the constraints from flavor changing neutral current processes such as $bto sgamma$ and $bto s ell^+ell^-$. We consider both dimension-four and dimension-five operators and show that the latter can give large deviations from the standard model in the still unobserved dilepton modes, even after the bounds from $bto sgamma$ and precision electroweak observables are taken into account.
ISSN:	0556-2821 1089-4918
DOI:	10.1103/PhysRevD.61.114016