[Theory-seminars] Theory Seminar. Monday, May 11, 1pm. Auditorium. Fernanda Steffens

[César Fernández Ramírez]

Theory Seminar
Monday, May 11, 2015
1:00 p.m.
CEBAF Center, Auditorium

Speaker: Fernanda Steffens (IF-U Sao Paulo)

Title: "A Lattice Calculation of Parton Distributions"

Abstract: We report on our exploratory study for the direct evaluation of the parton distribution
functions from lattice QCD, based on a recently proposed new approach.
We present encouraging results using Nf = 2 + 1 + 1 twisted mass fermions with
a pion mass of about 370MeV. The focus of this work is a detailed description
of the computation, including the lattice calculation, the matching to an infinite
momentum and the nucleon mass correction. In addition, we test the effect of
gauge link smearing in the operator to estimate the influence of the Wilson line
renormalization, which is yet to be done.


-- 
César Fernández-Ramírez

Theory Center -- Jefferson Lab
12000 Jefferson Ave., Newport News, VA 23606, USA

Phone: (+1) 757-269-7844
Fax: (+1) 757-269-7002
E-mail: cesar at jlab.org