Speaker
Carlo la Torre
Description
I consider semileptonic B-meson decay to the orbitally excited charmed meson $D^*_2$, having spin parity $J^P=2^+$. In particular, I apply the QCD sum rules method (using the original formulation known as short distance sum rules) to compute the decay constant of $D_2^*$ that is a preliminary ingredient for the calculation of the form factors describing the transition B $\rightarrow$ D$^{*}_2$.
Afterwards, I consider the variant of the method called light-cone QCD sum rules in order to derive the form factor $K_V$ describing the matrix element of the vector current between the B meson and $D^*_2$.
