Kohei Takeda
(University of Tsukuba)
15/06/2010, 16:40
Hadronic structure and interactions
We calculate the nucleon strange quark content in 2+1 flavor QCD using
the overlap fermion for both sea and valence quarks. The disconnected
three-point function is directly calculated using the all-to-all
propagator. We emphasize the role of chiral symmetry in the
renormalization of the strange quark content.
Michael Engelhardt
(New Mexico State University)
15/06/2010, 17:00
Hadronic structure and interactions
Both the scalar strange content of the nucleon, as embodied in the
F_Ts parameter, as well as the strange quark contribution to nucleon
spin, Delta s, are investigated in a mixed action scheme employing
domain wall valence quarks and quark loops on MILC asqtad dynamical
fermion ensembles. Results are presented for pion masses 495 MeV and
356 MeV.
Walter Freeman
(University of Arizona)
15/06/2010, 17:20
Hadronic structure and interactions
The strange quark content of the nucleon, <N|ss|N>, as well as other matrix elements, can be calculated on the lattice by examining correlations between the nucleon propagator and the quark condensate. The largest contribution to statistical error comes from coincidental correlations between the propagator and fluctuations in the condensate far from the propagation region that contribute only...
