Karlsruhe 2011 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
T: Fachverband Teilchenphysik
T 14: Flavourphysik (Theorie) I
T 14.5: Talk
Thursday, March 31, 2011, 17:45–18:00, 30.23: 3-1
Limits on New Physics from exclusive B→ D(∗) ℓν Decays — •Sven Faller, Benjamin Dassinger, Thomas Mannel, and Sascha Turczyk — Universität Siegen, Theoretische Physik 1
Exclusive B→ D(∗)ℓν decays are studied with a non-standard-model form of the hadronic current. This current is extended by additional right-handed vector as well as left- and right-handed scalar and tensor contributions. We discuss the decay rates in the Isgur-Wise limit and study the O(αs) corrections to the observables understudy. Using latest data and calculations of the form factors at the non-recoil point of exclusive semileptonic b→ c decays constraints to the wrong helicity admixtures in the hadronic current are discussed.