Journal Article

FZJ-2014-05355

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nucleon electromagnetic form factors from lattice QCD using a nearly physical pion mass

Green, J.  R. (Corresponding Author) ; Negele, J.  W. ; Pochinsky, A.  V. ; Syritsyn, S.  N. ; Engelhardt, M. ; Krieg, S.FZJ*

2014
Soc. [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/8033  doi:10.1103/PhysRevD.90.074507

Abstract: We present lattice QCD calculations of nucleon electromagnetic form factors using pion masses mπ=149, 202, and 254 MeV and an action with clover-improved Wilson quarks coupled to smeared gauge fields, as used by the Budapest-Marseille-Wuppertal Collaboration. Particular attention is given to the removal of the effects of excited-state contamination by calculations at three source-sink separations and the use of the summation and generalized pencil-of-function methods. The combination of a calculation at the nearly physical mass mπ=149  MeV in a large spatial volume (mπLs=4.2) and the removal of excited-state effects yields agreement with experiment for the electric and magnetic form factors GE(Q2) and GM(Q2) up to Q2=0.5  GeV2.

Note: arXiv:1404.4029

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 411 - Computational Science and Mathematical Methods (POF2-411) (POF2-411)

Appears in the scientific report 2014

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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