[Theory-seminars] Theory seminar Monday - Sebastian Jaskiewicz

[Patrick Barry]

Hello All,

This coming Monday, May 1st, at 1:00 PM (EDT), Sebastian Jaskiewicz of Durham University will give our next hybrid theory seminar. If you will be on-site and are comfortable doing so, please join us in room L102 of CEBAF Center. Otherwise, Sebastian's seminar will also be provided virtually on our usual ZoomGov link: https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09

Please see below for the title and abstract.

Theory Seminar
Monday, May 1st at 1:00 PM

Sebastian Jaskiewicz (Durham University)
will discuss " Developments in subleading power factorization and resummation"

Abstract:
Precise theoretical predictions are a key ingredient in ongoing tests of the Standard Model and in searches for physics beyond it. Since its inception twenty years ago, Soft Collinear Effective Theory (SCET) has been successfully applied to improve the precision of many important observables in collider physics. It is now standard practice to use SCET to derive factorization theorems and apply renormalization group (RG) methods to achieve leading power resummation of large logarithms that appear in regions of phase space with disparate energy scales. In this talk, I will discuss the recent developments in taking the step beyond the leading term in the power expansion. Focusing on the threshold Drell-Yan process, I will explain how the general factorization formula can be derived and I will discuss new objects that emerge beyond leading power: collinear jet functions and generalized soft functions. I will also explain challenges and advancements in achieving resummation at LL and beyond at next-to-leading power.


Best Regards,
Patrick, Caroline, and Joe
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