Speaker
Dr
Fernanda Steffens
(DESY - Zeuthen)
Description
We present spin-dependent parton distribution functions calculated
within lattice QCD simulations using physical values of the light quark
mass. Non-perturbative renormalization is employed, and the lattice data
are converted to the MS-scheme at a scale of 2 GeV. We then reconstruct
the light-cone parton distribution functions using a matching procedure.
We obtain a nice overlap for a range of Bjorken-x values between our
results and phenomenological parameterizations of the polarized
distributions. This presents a major success for the emerging field
of direct calculations of quark distributions using lattice QCD.
Primary author
Dr
Fernanda Steffens
(DESY - Zeuthen)
