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SUMMARY:IFIC Topical Seminar: Collinear functions for QCD resummations
DTSTART;VALUE=DATE-TIME:20221013T100000Z
DTEND;VALUE=DATE-TIME:20221013T110000Z
DTSTAMP;VALUE=DATE-TIME:20261014T162559Z
UID:indico-event-6794@indico.ific.uv.es
DESCRIPTION:Singular factors originating from the QCD factorisation of sca
 ttering amplitudes in soft and collinear limits play a prominent role in 
 both organising and computing high-order perturbative contributions to ha
 rd-scattering cross sections. In this talk\, I will report on recent work
  with arXiv number 2208.05840. We start from the factorisation structure o
 f scattering amplitudes in the collinear limit\, and we introduce colline
 ar functions that have a process-independent structure. These collinear f
 unctions\, which are defined at the fully-differential level\, can then b
 e integrated over the appropriate observable-dependent phase space to com
 pute logarithmically-enhanced contributions to the corresponding observab
 le. For transverse-momentum dependent observables\, we show how the colli
 near functions can be defined without introducing what is known as rapidit
 y divergences in the literature. We present the results of explicit compu
 tations of the collinear functions up to next-to-next-to-leading order in
  perturbation theory.\n \n\nhttps://indico.ific.uv.es/event/6794/
LOCATION:Universe 1001-Primera-1-1-1 - Paterna. Seminario
URL:https://indico.ific.uv.es/event/6794/
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