[HET seminar] Dissecting hadronisation corrections for collider physics

by Silvia Ferrario Ravasio (Oxford)

Thursday 26 Jan 2023, 11:00 → 12:30 US/Eastern

https://bnl.zoomgov.com/j/1605999124?pwd=eCs3M0t2eGtiL0dyMGNoUDIzamxqQT09

Also in small seminar room.

Abstract:

The outstanding progress in perturbative calculations enabled us to
augment our knowledge of the interactions among elementary particles,
the fundamental building blocks of our universe.  Non-perturbative
corrections usually manifest themselves as power corrections inversely
proportional to the center-of-mass energy.  In this talk I will discuss how 
to infer the presence of linear-power corrections, which can give percent
level  contributions at scales of the order 100 GeV, and  significantly limit 
the ultimate precision of our  theoretical predictions. In particular, I will focus
on observables used to infer the top-quark mass and the transverse momentum
of gauge bosons, where the targeted theoretical uncertainty is 1% or lower.
I will then present a new method to estimate hadronisation corrections for 
event shapes, which can be used to measure the QCD coupling constant.

 

BNL-seminar.pdf

video1159562779.mp4