The Strangeness and Charmness of Nucleon from Overlap Fermions

Details The Strangeness and Charmness of Nucleon from Overlap Fermions The Strangeness and Charmness of Nucleon from Overlap Fermions

2012-04-03

arxiv.org/abs/1204.0685v1

PoS(Lattice 2011)156

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented at the XXIX International Symposium on Lattice Field Theory, Squaw Valley, Lake Tahoe, California, USA, July 10

Scientific paper

The calculation of the strangeness and charmness of the nucleon is presented with overlap fermion action on 2+1 flavor domain wall fermion configurations. We adopt stochastic grid sources and the low mode substitution technique to improve the signals of nucleon correlation functions and the loops. The calculation is done on a $24^3\times 64$ lattice with $m_l=0.005$, $m_h=0.04$, and $a^{-1}=1.73\,{\rm GeV}$. We find $ f_{T_{s}} = 0.048(15)$ and $f_{T_{c}} = 0.029(43)$.

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