SCET 2023

Session

Session 6

28 Mar 2023, 11:00

Room 310, Building 91 (Lawrence Berkeley National Lab)

21. Factorization at subleading power for DY and DIS

Dr Michael Luke (University of Toronto)

28/03/2023, 11:00

I discuss factorization in SCET at next-to-leading power (NLP) for quark-induced Drell-Yan scattering at low $q_{\perp }^2$ and Deep Inelastic Scattering in the $x\to 1$ limit. Using a SCET approach with no explicit soft or collinear modes, I discuss the fact that spurious endpoint and rapidity divergences which naively spoil factorization in SCET cancel when double-counting of degrees of...

12. Weak annihilation in non-leptonic $B$ decays

Dr Philipp Böer (JGU Mainz)

28/03/2023, 11:30

Exclusive non-leptonic $B$-meson decays provide a precision laboratory for tests of flavour-changing weak transitions.
While the factorization of the decay amplitude is well understood in the heavy-quark limit since more than two decades, very little is known so far about power-corrections.
One particular class of such suppressed effects are the so-called weak-annihilation topologies. With...

7. Heavy Meson LCDA: SCET to bHQET Matching

Gael Finauri (TUM)

28/03/2023, 12:00

Light-cone distribution amplitudes (LCDAs) frequently arise in factorization theorems involving light and heavy mesons.
The QCD LCDA for heavy mesons includes short-distance physics at energy scales of the heavy quark mass.
In this talk I will explain how to achieve the separation of this perturbative scale from the purely hadronic effects by expressing the QCD LCDA as a convolution of a...