Hamburg 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 56: Beyond the Standard Model (Theorie)
T 56.3: Vortrag
Dienstag, 1. März 2016, 17:15–17:30, VMP8 SR 106
Lepton flavour violation in RS models with a brane- or nearly brane-localized Higgs — Martin Beneke1, •Paul Moch1,2, and Jürgen Rohrwild3 — 1Physik-Department T31, Technische Universität München, James-Franck-Straße 1, 85748 Garching — 2Theoretische Physik 1, Universität Siegen, Walter-Flex-Straße 3 , 57068 Siegen — 3Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP
We perform a comprehensive study of charged lepton flavour violation in Randall-Sundrum (RS) models in a fully 5D quantum-field-theoretical framework. Our calculation provides the first complete result for the flavour-violating electromagnetic dipole operator in Randall-Sundrum models. We study the typical range for the branching fractions of µ→ eγ, µ → 3e, µ N → e N as well as τ→ µγ, τ → 3µ by a numerical scan in both the minimal and the custodial RS model. The combination of µ→ eγ and µ N → e N currently provides the most stringent constraint on the parameter space of the model. A typical lower limit on the KK scale T is around 2 TeV in the minimal model (up to 4 TeV in the bulk Higgs case with large Yukawa couplings), and around 4 TeV in the custodially protected model, which corresponds to a mass of about 10 TeV for the first KK excitations, far beyond the lower limit from the non-observation of direct production at the LHC.