Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 71: Theorie: Flavorphysik

T 71.5: Talk

Wednesday, March 27, 2019, 17:00–17:15, H11

Combining theory inputs for B→ D^(*)ℓnu and extracting |V_cb| — Marzia Bordone^1,2, Martin Jung³, and •Danny van Dyk⁴ — ¹Physik-Institut, Universität Zürich, Winterthurer Strasse 190, 8057 Zürich, Switzerland — ²Theoretische Physik 1, Universität Siegen, Walter-Flex-Straße 3, D-57068 Siegen, Germany — ³Excellence Cluster Universe, Technische Universität München, Boltzmannstr. 2, D-85748 Garching, Germany — ⁴Physik Department, TU München, James-Franck-Straße 1, D-85748 Garching, Germany

Recent theory results for the full set of hadronic matrix elements arising in B→ D^(*)ℓν decays have triggered our interest. We investigate if and how various pieces of theory information on these hadronic matrix elements fit together. As a consequence, we obtain precise theory predictions for the full angular distribution of these decays in the SM and beyond. Finally, we challenge the experimental data available from the BaBar and Belle collaborations. We discuss the compatibility between our results for |V_cb| and the inclusive determination.