HET Seminar

"Dissecting hadronisation corrections for collider physics"

Presented by Silvia Ferrario Ravasio, Oxford

Thursday, January 26, 2023, 11:00 am — Small Seminar Room, Bldg. 510


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.

Hosted by: Peter Denton

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