Speaker
Yong Zhao
(Argonne National Laboratory)
Description
We develop a procedure to renormalize the quasi parton distribution in the recently proposed hybrid scheme and match it to the $\overline{\rm MS}$ scheme light-cone parton distribution at next-to-next-to-leading-order in perturbation theory. Under this procedure we calculate the pion valence quark
distribution using two fine lattices with spacing
$a=0.04$ fm and $0.06$ fm and valence pion mass $m_\pi=300$ MeV, at boost momentum as large as $2.42$ GeV. We demonstrate that perturbative matching in the Bjorken-$x$ space yields
reliable determination of the valence quark
distribution for a moderate region of $x$.
Primary authors
Dr
Andrew Hanlon
(Brookhaven National Laboratory)
Dr
Nikhil Karthik
(Brookhaven National Laboratory)
Dr
Peter Petreczky
(Brookhaven National Laboratory)
Dr
Philipp Scior
(Brookhaven National Laboratory)
Prof.
Sergey Syritsyn
(Stony Brook University)
Dr
Swagato Mukherjee
(Brookhaven National Laboratory)
Dr
Xiang Gao
(Brookhaven National Laboratory)
Yong Zhao
(Argonne National Laboratory)