Speaker
Prof.
Ulrich Nierste
Description
Data on $B \rightarrow D \tau \nu$ and $B \rightarrow D^* \tau \nu$ deviate from their Standard-Model expectations. I discuss how precise measurements of polarisation observables can discriminate between different new-physics interpretations. The branching fraction of $\Lambda_b \rightarrow \Lambda_c \tau \nu$ will instead serve as a model-independent cross-check of previous measurements, because it satisfy a sum rule holding in $any$ model of new physics.
Author
Prof.
Ulrich Nierste
