Nucleon Charges and Electromagnetic Form Factors from 2+1+1-Flavor Lattice QCD

Abstract

We present lattice-QCD results on the nucleon isovector axial, scalar and tensor charges, the isovector electromagnetic Dirac and Pauli form factors, and the connected parts of the isoscalar charges. The calculations have been done using two ensembles of HISQ lattices generated by the MILC Collaboration with 2+1+1 dynamical flavors at a lattice spacing of 0.12 fm and with light-quark masses corresponding to pions with masses 310 and 220 MeV. We perform a systematic study including excited-state degrees of freedom and examine the dependence of the extracted nucleon matrix elements on source-sink separation. This study demonstrates with high-statistics data that including excited-state contributions and generating data at multiple separations is necessary to remove contamination that would otherwise lead to systematic error. We also determine the renormalization constants of the associated quark bilinear operators in the RI-sMOM scheme and make comparisons of our renormalized results with previous dynamical-lattice calculations.

20 pages, 11 figures, 8 tables; NPR further revised and some clarifications in response to referee comments

References in corpus (13)

• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Global analysis of proton elastic form factor data with two-photon exchange corrections
• Scaling studies of QCD with the dynamical HISQ action
• Axial coupling constant of the nucleon for two flavours of dynamical quarks in finite and infinite volume
• Precision Measurement of the Neutron Beta-Decay Asymmetry
• Electromagnetic form factors of the nucleon: new fit and analysis of uncertainties
• Nucleon structure with two flavors of dynamical domain-wall fermions
• First Calculation of Hyperon Axial Couplings from Lattice QCD
• RI'/SMOM scheme amplitudes for quark currents at two loops
• Chiral extrapolations for nucleon electric charge radii
• A solenoidal electron spectrometer for a precision measurement of the neutron $\beta$-asymmetry with ultracold neutrons
• A note on Rome-Southampton Renormalization with Smeared Gauge Fields

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