出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We calculate the pion vector and scalar form factors in two-flavor QCD. Gauge configurations are
generated with dynamical overlap quarks on a 163×32 lattice at a lattice spacing of 0.12 fm with
sea quark masses down to a sixth of the physical strange quark mass. Contributions of disconnected
diagrams to the scalar form factor is calculated employing the all-to-all quark propagators.
We present a detailed comparison of the vector and scalar radii with chiral perturbation theory to
two loops.
