Speaker
Markus Prim
(BELLE (BELLE II Experiment))
Description
We present updated predictions of $R(D^{(*)})$ using a modified power-counting within the heavy quark effective theory that results in a highly constrained set of second-order power corrections in the heavy quark expansion, compared to the nominal expansion. We analyze new experimental data to determine all $B \to D^{(*)}$ form factors within and beyond the Standard Model at $\mathcal{O}(\alpha_s, \alpha_s/m_{c,b}, 1/m_{c,b}^2)$. We further present additional tests of the residual chiral expansion using baryonic decays to predict $R(\Lambda_c)$ and determinations of the CKM matrix element $|V_{cb}|$.
| Collaboration / Activity | Phenomenology |
|---|
Primary authors
Dean Robinson
(LBNL)
Florian Bernlochner
(BELLE (BELLE II Experiment))
Markus Prim
(BELLE (BELLE II Experiment))
Michele Papucci
(Caltech)
Zoltan Ligeti
(LBNL)
