TY - JOUR
T1 - Strange quark condensate in the nucleon in 2+1 flavor QCD
AU - Toussaint, D.
AU - Freeman, W.
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009/9/18
Y1 - 2009/9/18
N2 - We calculate the "strange quark content of the nucleon," N|s̄s|N, which is important for interpreting the results of some dark matter detection experiments. The method is to evaluate quark-line disconnected correlations on the MILC lattice ensembles, which include the effects of dynamical light and strange quarks. After continuum and chiral extrapolations, the result is N|s̄s|N=0.69(7)stat(9)syst, in the modified minimal subtraction scheme (2 GeV) regularization, or for the renormalization scheme invariant form, ms∂MN∂ms=59(6)(8)MeV.
AB - We calculate the "strange quark content of the nucleon," N|s̄s|N, which is important for interpreting the results of some dark matter detection experiments. The method is to evaluate quark-line disconnected correlations on the MILC lattice ensembles, which include the effects of dynamical light and strange quarks. After continuum and chiral extrapolations, the result is N|s̄s|N=0.69(7)stat(9)syst, in the modified minimal subtraction scheme (2 GeV) regularization, or for the renormalization scheme invariant form, ms∂MN∂ms=59(6)(8)MeV.
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U2 - 10.1103/PhysRevLett.103.122002
DO - 10.1103/PhysRevLett.103.122002
M3 - Article
AN - SCOPUS:70349295218
SN - 0031-9007
VL - 103
JO - Physical Review Letters
JF - Physical Review Letters
IS - 12
M1 - 122002
ER -