Manchester Particle Physics Seminars, Colloquia and Meetings

Aditya Pathak: Understanding nonperturbative corrections to groomed jet mass using SCET and Coherent Branching

Friday, 15 November 2019 from to (Europe/London)
at Schuster ( 54-6-6.40 - Niels Bohr Common Room )
Jet grooming is a technique developed over the last decade that allows careful removal of soft contamination in jets at the LHC such that calculations of IR safe observables on the groomed jet can be performed in perturbation theory. Groomed observables have recently gained a widespread interest in light of their potential applications in precision standard model physics. Thus, it is important to understand and quantify the nonperturbative corrections to these observables, and thus reduce a source of theoretical uncertainty. In this talk I will review our recent work in this area, with special emphasis on our use of the two contrasting, but yet subtly equivalent, approaches to perturbative QCD, namely the Soft Collinear Effective Theory (SCET) and the coherent branching formalism.