Pion vector and scalar form factors with dynamical overlap quarks

Details Pion vector and scalar form factors with dynamical overlap quarks Pion vector and scalar form factors with dynamical overlap quarks

2008-10-15

arxiv.org/abs/0810.2590v2

PoS LATTICE2008:158,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages; Talk presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19 2008, Williamsburg, Virginia

Scientific paper

We calculate the pion vector and scalar form factors in two-flavor QCD. Gauge configurations are generated with dynamical overlap quarks on a 16^3 x 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.

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