The 37th International Symposium on Lattice Field Theory (Lattice 2019)

$B \to D^*$ form factors, $R(D^*)$, and $|V_{cb}|$

18 Jun 2019, 10:15

30m

Wuchang + Hankou

Plenary Weak Decays and Matrix Elements Plenary

Speaker

Dr Andrew Lytle (INFN Rome Tor Vergata)

Description

I will discuss progress in lattice calculations of $B \to D^* \ell v$ form factors, and related decays involving a $b \to c$ transition. These are important for the precision determination of $|V_{cb}|$ in the Standard Model (SM), and a possible key to resolving long-standing discrepancy between inclusive and exclusive determinations. I will also discuss their relevance for understanding the SM anomalies in R-ratios, $R(B \to D^{(*)})$ and $R(B_c \to J/\psi)$.

Presentation materials

Lytle_LATT19_v2.pdf