Nucleon strangeness form factors from Nf=2+1 clover fermion lattice QCD

Takumi Doi, Mridupawan Deka, Shao Jing Dong, Terrence Draper, Keh Fei Liu, Devdatta Mankame, Nilmani Mathur, Thomas Streuer

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

We present the Nf=2+1 clover fermion lattice QCD calculation of the nucleon strangeness form factors. We evaluate disconnected insertions using the Z(4) stochastic method, along with unbiased subtractions from the hopping parameter expansion. We find that increasing the number of nucleon sources for each configuration improves the signal significantly. We obtain GMs(0)=-0.017(25)(07) , where the first error is statistical, and the second is the uncertainties in Q2 and chiral extrapolations. This is consistent with experimental values, and has an order of magnitude smaller error.

Original languageEnglish
Article number094503
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume80
Issue number9
DOIs
StatePublished - Nov 10 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Nucleon strangeness form factors from Nf=2+1 clover fermion lattice QCD'. Together they form a unique fingerprint.

Cite this