Pion structure from improved lattice QCD: Form factor and charge radius at low masses

van der Heide J, Koch JH, Laermann E (2004)
PHYSICAL REVIEW D 69(9).

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The charge form factor of the pion is calculated in lattice QCD. The nonperturbatively improved Sheikholeslami-Wohlert action is used together with the O(a) improved vector current. Other choices for the current are examined. The form factor is extracted for pion masses from 970 down to 360 MeV and for momentum transfers Q(2)less than or equal to2 GeV2. The mean square charge radius is extracted and compared to previous determinations, and its extrapolation to lower masses discussed.
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van der Heide J, Koch JH, Laermann E. Pion structure from improved lattice QCD: Form factor and charge radius at low masses. PHYSICAL REVIEW D. 2004;69(9).
van der Heide, J., Koch, J. H., & Laermann, E. (2004). Pion structure from improved lattice QCD: Form factor and charge radius at low masses. PHYSICAL REVIEW D, 69(9).
van der Heide, J., Koch, J. H., and Laermann, E. (2004). Pion structure from improved lattice QCD: Form factor and charge radius at low masses. PHYSICAL REVIEW D 69.
van der Heide, J., Koch, J.H., & Laermann, E., 2004. Pion structure from improved lattice QCD: Form factor and charge radius at low masses. PHYSICAL REVIEW D, 69(9).
J. van der Heide, J.H. Koch, and E. Laermann, “Pion structure from improved lattice QCD: Form factor and charge radius at low masses”, PHYSICAL REVIEW D, vol. 69, 2004.
van der Heide, J., Koch, J.H., Laermann, E.: Pion structure from improved lattice QCD: Form factor and charge radius at low masses. PHYSICAL REVIEW D. 69, (2004).
van der Heide, J, Koch, JH, and Laermann, Edwin. “Pion structure from improved lattice QCD: Form factor and charge radius at low masses”. PHYSICAL REVIEW D 69.9 (2004).
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