SCET 2024

Session

Session 3: glaubers

Apr 15, 2024, 3:00 PM

Salón de Actos (Salamanca, Colegio Arzobispo Fonseca)

Description

Chair: Alexey Vladimirov

54. RG-Improved Resummation of Super-Leading Logarithms

Michel Stillger (JGU Mainz)

4/15/24, 3:00 PM

Talk

The higher-order behavior of logarithmically enhanced contributions in non-global observables is very intricate, in particular as double-logarithmic corrections arise first at high orders in perturbation theory. The resummation of these super-leading logarithms (SLLs) is extended by including the running of the strong coupling $\alpha_s(\mu)$, i.e. in RG-improved perturbation theory. This is...

55. Exclusive leptonic B decays at sub-leading power : factorization theorems for virtual structure-dependent QED effects and real corrections.

Max Ferré (JGU)

4/15/24, 3:30 PM

Talk

In this talk, I will present progress on the computation of the leptonic $B^- \rightarrow \ell^- \bar{\nu}_\ell$ decay in SCET. Above the confinement scale $\Lambda_{\rm QCD}$, we describe the virtual QED corrections of the decay with an EFT construction based on $\text{SCET}_{\rm I}\otimes \text{HQET}$ where both hard collinear and collinear modes are treated as independent degrees of...