TY - JOUR
T1 - Nucleon electromagnetic form factors at high Q2 from Wilson-clover fermions
AU - Kallidonis, Christos
AU - Syritsyn, Sergey
AU - Engelhardt, Michael
AU - Green, Jeremy
AU - Meinel, Stefan
AU - Negele, John
AU - Pochinsky, Andrew
N1 - Funding Information:
Acknowledgements: We are grateful to Kostas Orginos for providing the gauge field ensembles, generated using resources provided by XSEDE (supported by National Science Foundation Grant No. ACI-1053575). S. M. is supported by the U.S. Department of Energy (DoE), Office of Science, Office of High Energy Physics under Award Number DE-SC0009913. S. S. and S. M. also acknowledge support by the RHIC Physics Fellow Program of the RIKEN BNL Research Center. M. E., J. N, and A. P. are supported by the U.S. DoE, Office of Science, Office of Nuclear Physics through grants numbered DE-FG02- 96ER40965, DE-SC-0011090 and DE-FC02-06ER41444 respectively. Computations were performed in facilities of the USQCD Collaboration, using the Qlua and QUDA software suites.
Funding Information:
Acknowledgements: We are grateful to Kostas Orginos for providing the gauge field ensembles, generated using resources provided by XSEDE (supported by National Science Foundation Grant No. ACI-1053575). S. M. is supported by the U.S. Department of Energy (DoE), Office of Science, Office of High Energy Physics under Award Number DE-SC0009913. S. S. and S. M. also acknowledge support by the RHIC Physics Fellow Program of the RIKEN BNL Research Center. M. E., J. N, and A. P. are supported by the U.S. DoE, Office of Science, Office of Nuclear Physics through grants numbered DE-FG02-96ER40965, DE-SC-0011090 and DE-FC02-06ER41444 respectively. Computations were performed in facilities of the USQCD Collaboration, using the Qlua and QUDA software suites.
Publisher Copyright:
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PY - 2018
Y1 - 2018
N2 - We present results on the nucleon electromagnetic form factors from Lattice QCD at momentum transfer up to about 12 GeV2. We analyze two gauge ensembles with the Wilson-clover fermion action, a lattice spacing of a≈0.09 fm and pion masses mπ ≈170 MeV and mπ ≈280 MeV. In our analysis we employ momentum smearing as well as a set of techniques to investigate excited state effects. Good agreement with experiment and phenomenology is found for the ratios GE/GM and F2/F1, whereas discrepancies are observed for the individual form factors F1 and F2. We discuss various systematics that may affect our calculation.
AB - We present results on the nucleon electromagnetic form factors from Lattice QCD at momentum transfer up to about 12 GeV2. We analyze two gauge ensembles with the Wilson-clover fermion action, a lattice spacing of a≈0.09 fm and pion masses mπ ≈170 MeV and mπ ≈280 MeV. In our analysis we employ momentum smearing as well as a set of techniques to investigate excited state effects. Good agreement with experiment and phenomenology is found for the ratios GE/GM and F2/F1, whereas discrepancies are observed for the individual form factors F1 and F2. We discuss various systematics that may affect our calculation.
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M3 - Conference article
AN - SCOPUS:85069975330
SN - 1824-8039
VL - 334
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 125
T2 - 36th Annual International Symposium on Lattice Field Theory, LATTICE 2018
Y2 - 22 July 2018 through 28 July 2018
ER -