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SUMMARY:Quasi-PDFs as observables - Luigi del Debbio (Edinburgh)
DTSTART:20200130T160000Z
DTEND:20200130T170000Z
UID:TALK134542@talks.cam.ac.uk
CONTACT:Mathieu Pellen
DESCRIPTION:Light-cone Parton Distribution Functions (PDFs) encode our kno
 wledge of the structure of nucleons in terms of elementary constituents ca
 lled partons. Factorization theorems allow us to compute observables at co
 lliders as convolutions of the PDFs and some hard cross-sections that can 
 be determined in perturbation theory. Because of the nonperturbative natur
 e of QCD at the hadronic scale\, PDFs are not accessible to perturbation t
 heory and are usually extracted from experimental data. \n\nRecently there
  has been a lot of activity focussed on the computation of quasi-PDF (and 
 pseudo-PDF) from first-principle lattice simulations of QCD. \nIn this tal
 k we summarise the relation between these quantities and the usual light-c
 one PDFs that are used as an input for phenomenological analyses at collid
 ers. We will elucidate a few theoretical points and discuss how to include
  these quantities in current global fits of PDFs. Perspectives for future 
 work on the lattice will be presented.\n\n\nThe slides of the presentation
  can be found "here":http://www.hep.phy.cam.ac.uk/~conference/DelDebbio_30
 _01_2020.pdf
LOCATION:MR19 (Potter Room\, Pavilion B)\, CMS
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