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Nucleon electromagnetic form factors in twisted mass lattice QCD

Abstract : We present results on the nucleon electromagnetic form factors within lattice QCD using two flavors of degenerate twisted mass fermions. Volume effects are examined using simulations at two volumes of spatial length L=2.1 fm and L=2.8 fm. Cut-off effects are investigated using three different values of the lattice spacings, namely a=0.089 fm, a=0.070 and a=0.056 fm. The nucleon magnetic moment, Dirac and Pauli radii are obtained in the continuum limit and chirally extrapolated to the physical pion mass allowing for a comparison with experiment.
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Submitted on : Friday, April 15, 2011 - 10:29:17 AM
Last modification on : Thursday, November 19, 2020 - 12:58:56 PM

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C. Alexandrou, M. Brinet, J. Carbonell, M. Constantinou, P.A. Harraud, et al.. Nucleon electromagnetic form factors in twisted mass lattice QCD. Physical Review D, American Physical Society, 2011, 83, pp.094502. ⟨10.1103/PhysRevD.83.094502⟩. ⟨in2p3-00586159⟩



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