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SUMMARY:Pdf from lattice - Fernanda Steffens (DESY Zeuthen)
DTSTART:20161025T140000Z
DTEND:20161025T150000Z
UID:TALK67601@talks.cam.ac.uk
CONTACT:Alexander Mitov
DESCRIPTION:We provide a high statistics analysis of the x-dependence of t
 he bare unpolarized\, helicity and transversity iso-vector parton distribu
 tion functions (PDFs) from lattice calculations employing (maximally) twis
 ted mass fermions. The x-dependence of the calculated PDFs resembles those
  of the phenomenological parameterizations\, a feature that makes this app
 roach promising despite the lack of a full renormalization program for the
 m. Furthermore\, we apply momentum smearing for the relevant matrix elemen
 ts to compute the lattice PDFs and find a large improvement factor when co
 mpared to conventional Gaussian smearing. This allows us to extend the lat
 tice computation of the distributions to higher values of the nucleon mome
 ntum.
LOCATION:Rutherford Seminar Room B
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