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Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 14: Flavourphysik (Theorie) I

T 14.4: Talk

Thursday, March 31, 2011, 17:30–17:45, 30.23: 3-1

Phenomenology of BXs γ in the Randall-Sundrum Model — •Christoph Schmell — Institut für Physik, Universität Mainz

Flavor-changing neutral currents like the weak B meson decay BXsγ are very important processes for the investigation of New Physics (NP) as they do not occur on tree-level in the Standard Model (SM). In recent years, one achieved an enhanced accuracy in measurements of these processes at the B factories so that it is worth considering them in NP models. Concerning the mentioned B meson decay, people are interested in the Wilson coefficient C since this coefficient is relevant for all associated observables.

One possibility for NP is the Randall-Sundrum model (RS) characterized by a five-dimensional space-time where the compact extra dimension is warped. This leads to an infinite number of massive so-called Kaluza-Klein excitations of all SM particles. Furthermore, all massive gauge bosons have flavor-violating couplings to fermions so that the contributions of the RS model to C are expected to be significant.

In my talk I will present their effects to the branching ratio, the CP asymmetry and the photon polarization ratio.

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