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SUMMARY:Axial Vector Form Factors of the Nucleon using lattice QCD
DTSTART;VALUE=DATE-TIME:20200228T080000Z
DTEND;VALUE=DATE-TIME:20200228T082000Z
DTSTAMP;VALUE=DATE-TIME:20260308T035216Z
UID:indico-contribution-1514@indico.tlabs.ac.za
DESCRIPTION:Speakers: Rajan Gupta (Los Alamos National Laboratory)\nThe su
 ccess of experiments such as DUNE require the determination of neutrino fl
 ux and cross-section with nuclear targets with unprecedented accuracy. A c
 rucial input in the calculations of these is the axial form factor. Starti
 ng from the standard model that defines the interaction of the axial curre
 nt with quarks\, one needs to include both QCD corrections that bind quark
 s into nucleons and nuclear effects that arise in heavy nuclear targets su
 ch as argon.  Experimental access to the first\, QCD corrections for nucle
 ons\, is prevented by safety concerns posed by liquid hydrogen targets. Ax
 ial and electromagnetic form factors of the nucleon can be calculated from
  first principals using lattice QCD.  This talk will show that we now have
  control over all sources of systematic errors that arise in lattice QCD c
 alculations and the axial form factors satisfy the PCAC relation\, an esse
 ntial and non-trivial check [see arXiv:1905.06470]. Finally\, I will prese
 nt state-of-the-art results at the physical pion mass and in the continuum
  limit and compare them with phenomenology. Prospects for reaching 1–2% 
 accuracy will be discussed.\n\nhttps://indico.tlabs.ac.za/event/85/contrib
 utions/1514/
LOCATION:Parallel Venue
URL:https://indico.tlabs.ac.za/event/85/contributions/1514/
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