SCET 2023

Session

Session 9

29 Mar 2023, 11:00

Room 310, Building 91 (Lawrence Berkeley National Lab)

6. Refactorization in subleading B decay into photon

Robert Szafron

29/03/2023, 11:00

I will discuss refactorization conditions between the subleading power contributions to the inclusive B decay into photon suffering from endpoint divergences. I will also prove factorization theorem beyond leading power. This result allows for higher-order calculations of the resolved contributions and consistent summation of large logarithms. This is an example of first endpoint factorisation...

11. Structure-Dependent QED Effects in Exclusive B Decays at Subleading Power

Claudia Cornella (JGU Mainz), Prof. Matthias Neubert (JGU Mainz)

29/03/2023, 11:30

We derive a factorization theorem for the structure-dependent QED effects in the weak exclusive process $B^-\to\mu^-\bar\nu_\mu$, i.e., effects probing the internal structure of the $B$ meson. The derivation requires a careful treatment of endpoint-divergent convolutions common to subleading-power factorization formulas. We find that the decay amplitude is sensitive to two- and three-particle...

41. Structure-Dependent QED Effects in Exclusive B Decays at Subleading Power: Factorization and Operator Basis

Claudia Cornella (JGU Mainz)

We derive a factorization theorem for the structure-dependent QED effects in the weak exclusive process $B^-\to\mu^-\bar\nu_\mu$, i.e., effects probing the internal structure of the $B$ meson. The derivation requires a careful treatment of endpoint-divergent convolutions common to subleading-power factorization formulas. We find that the decay amplitude is sensitive to two- and three-particle...