TY - JOUR
T1 - Lattice calculation of pion form factors with overlap fermions
AU - Wang, Gen
AU - Liang, Jian
AU - Draper, Terrence
AU - Liu, Keh Fei
AU - Yang, Yi Bo
N1 - Publisher Copyright:
© 2021 Published by the American Physical Society
PY - 2021/10/1
Y1 - 2021/10/1
N2 - We present a precise calculation of the pion form factor using overlap fermions on seven ensembles of ()-flavor domain-wall configurations with pion masses varying from 139 to . Taking advantage of the fast Fourier transform and other techniques to access many combinations of source and sink momenta, we find the pion mean square charge radius to be , which agrees well with the experimental result, and includes the systematic uncertainties from chiral extrapolation, lattice spacing and finite-volume dependence. We also find that depends on both the valence and sea quark masses strongly and predicts the pion form factor up to , which agrees with experiments very well.
AB - We present a precise calculation of the pion form factor using overlap fermions on seven ensembles of ()-flavor domain-wall configurations with pion masses varying from 139 to . Taking advantage of the fast Fourier transform and other techniques to access many combinations of source and sink momenta, we find the pion mean square charge radius to be , which agrees well with the experimental result, and includes the systematic uncertainties from chiral extrapolation, lattice spacing and finite-volume dependence. We also find that depends on both the valence and sea quark masses strongly and predicts the pion form factor up to , which agrees with experiments very well.
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U2 - 10.1103/PhysRevD.104.074502
DO - 10.1103/PhysRevD.104.074502
M3 - Article
AN - SCOPUS:85116781140
SN - 2470-0010
VL - 104
JO - Physical Review D
JF - Physical Review D
IS - 7
M1 - 074502
ER -