The strange quark content of the nucleon in 2+1 flavor lattice QCD

Walter Freeman; Doug Toussaint

The strange quark content of the nucleon in 2+1 flavor lattice QCD

Walter Freeman
, Doug Toussaint

Physics

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

The strangeness of the nucleon, hN| ss|Ni-h0| ss|0i , is a quantity of interest for interpreting the results of dark matter detection experiments as well as for exploring the structure of the nucleon itself. We present a calculation of this quantity in 2+1 flavor lattice QCD using a range of lattice spacings and quark masses. The method is based on calculating quark-line disconnected contributions on the MILC lattice configurations, which include the effects of dynamical strange quarks. After continuum and chiral extrapolations, the value is hN| ss|Ni-h0| ss|0i = 0.69±0.07stat±0.09sys in the ms(2GeV) regularization.

Original language	English (US)
Journal	Proceedings of Science
Volume	91
State	Published - 2009
Event	27th International Symposium on Lattice Field Theory, LAT 2009 - Beijing, China Duration: Jul 26 2009 → Jul 31 2009

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Cite this

@article{344d7b5cbd2e4ebbac9438e24b895544,

title = "The strange quark content of the nucleon in 2+1 flavor lattice QCD",

abstract = "The strangeness of the nucleon, hN| ss|Ni-h0| ss|0i , is a quantity of interest for interpreting the results of dark matter detection experiments as well as for exploring the structure of the nucleon itself. We present a calculation of this quantity in 2+1 flavor lattice QCD using a range of lattice spacings and quark masses. The method is based on calculating quark-line disconnected contributions on the MILC lattice configurations, which include the effects of dynamical strange quarks. After continuum and chiral extrapolations, the value is hN| ss|Ni-h0| ss|0i = 0.69±0.07stat±0.09sys in the ms(2GeV) regularization.",

author = "Walter Freeman and Doug Toussaint",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.; 27th International Symposium on Lattice Field Theory, LAT 2009 ; Conference date: 26-07-2009 Through 31-07-2009",

year = "2009",

language = "English (US)",

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TY - JOUR

T1 - The strange quark content of the nucleon in 2+1 flavor lattice QCD

AU - Freeman, Walter

AU - Toussaint, Doug

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2009

Y1 - 2009

N2 - The strangeness of the nucleon, hN| ss|Ni-h0| ss|0i , is a quantity of interest for interpreting the results of dark matter detection experiments as well as for exploring the structure of the nucleon itself. We present a calculation of this quantity in 2+1 flavor lattice QCD using a range of lattice spacings and quark masses. The method is based on calculating quark-line disconnected contributions on the MILC lattice configurations, which include the effects of dynamical strange quarks. After continuum and chiral extrapolations, the value is hN| ss|Ni-h0| ss|0i = 0.69±0.07stat±0.09sys in the ms(2GeV) regularization.

AB - The strangeness of the nucleon, hN| ss|Ni-h0| ss|0i , is a quantity of interest for interpreting the results of dark matter detection experiments as well as for exploring the structure of the nucleon itself. We present a calculation of this quantity in 2+1 flavor lattice QCD using a range of lattice spacings and quark masses. The method is based on calculating quark-line disconnected contributions on the MILC lattice configurations, which include the effects of dynamical strange quarks. After continuum and chiral extrapolations, the value is hN| ss|Ni-h0| ss|0i = 0.69±0.07stat±0.09sys in the ms(2GeV) regularization.

UR - https://www.scopus.com/pages/publications/84902661938

UR - https://www.scopus.com/pages/publications/84902661938#tab=citedBy

M3 - Conference article

AN - SCOPUS:84902661938

SN - 1824-8039

VL - 91

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 27th International Symposium on Lattice Field Theory, LAT 2009

Y2 - 26 July 2009 through 31 July 2009

ER -

The strange quark content of the nucleon in 2+1 flavor lattice QCD

Abstract

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