Anomalous Wtb coupling effects in the weak radiative B-meson decay

Details Anomalous Wtb coupling effects in the weak radiative B-meson decay Anomalous Wtb coupling effects in the weak radiative B-meson decay

2008-02-11

arxiv.org/abs/0802.1413v3

Phys.rev.D78:077501,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures. The arXiv version remains extended w.r.t. the journal version. The first function in Eq. (12) has been cor

Scientific paper

10.1103/PhysRevD.78.077501

We study the effect of anomalous Wtb couplings on the B -> Xs gamma branching ratio. The considered couplings are introduced as parts of gauge-invariant dimension-six operators that are built out of the Standard Model fields only. One-loop contributions from the charged-current vertices are assumed to be of the same order as the tree-level flavour-changing neutral current ones. Bounds on the corresponding Wilson coefficients are derived.

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