Karlsruhe 2011 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 14: Flavourphysik (Theorie) I
T 14.4: Vortrag
Donnerstag, 31. März 2011, 17:30–17:45, 30.23: 3-1
Phenomenology of B → Xs γ in the Randall-Sundrum Model — •Christoph Schmell — Institut für Physik, Universität Mainz
Flavor-changing neutral currents like the weak B meson decay B → Xsγ 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 C7γ 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 C7γ 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.