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T: Fachverband Teilchenphysik

T 18: Flavourphysik (Theorie) 1

T 18.8: Talk

Thursday, March 1, 2012, 18:30–18:45, VG 3.102

CP Asymmetries in penguin-dominated, hadronic B_d decays: Constraining New Physics at NLO — •Stefan Vickers — Excellence Cluster Universe, TU München

CP Asymmetries in penguin-dominated, hadronic B_d decays into CP eigenstates (π,η,η′,φ,ω,ρ)K_S are predicted to be small in the Standard Model. These Observables will be measured in future facilities (Belle II, SuperB) with very high precision and therefore could be used to test CP violating couplings beyond the Standard Model.

We investigate such additional contributions for a general class of Models in the framework of QCD factorization at Next-to-Leading order precision. As an example, we demonstrate how these observables can constrain the parameter space of a generic modification of the Z-penguin.