Contributions of vector-like quarks to radiative B meson decay

Details Contributions of vector-like quarks to radiative B meson decay Contributions of vector-like quarks to radiative B meson decay

2000-05-15

arxiv.org/abs/hep-ph/0005133v3

Phys.Lett. B487 (2000) 321-326

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LATEX file with 3 EPS figures

Scientific paper

10.1016/S0370-2693(00)00818-2

We study the decay B\to X_s\gamma in a minimal extension of the standard model with extra up- and down-type quarks whose left- and right-handed components are both SU(2) singlets. Constraints on the extended Cabibbo-Kobayashi-Maskawa matrix are obtained from the experimental results for the branching ratio. Even if the extra quarks are too heavy to be detected in near-future colliders, the branching ratio could have a value which is non-trivially different from the prediction of the standard model.

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