May 20 – 22, 2019
Max Planck Institute for Astrophysics (MPA)
Europe/Berlin timezone

A four-dimensional form-factor fit to B->D*lnu with hadronic tagging from BaBar

May 21, 2019, 2:30 PM
E.0.11 (Max Planck Institute for Astrophysics (MPA) )


Max Planck Institute for Astrophysics (MPA)

Karl-Schwarzschild-Str. 1 85748 Garching Germany


Biplap Dey


We present results on the first full 4-dimensional angular analysis of B->Dlnu, using the e+e- collision dataset collected by the BaBar experiment at the Y(4S) resonance. One B meson from the Y(4S)->BBbar decay is fully reconstructed in a hadronic decay mode which constrains the kinematics and provides a precise determination of the neutrino momentum vector. We extract the underlying hadronic form-factors employing the model-independent BGL approach and a value for the CKM matrix element Vcb. Last, employing our measured BGL form-factors, we provide new predictions within the Standard Model, for observables related to the the semi-tauonic decay B->Dtaunu.

Presentation materials