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arXiv · 0810.2590

Pion vector and scalar form factors with dynamical overlap quarks

JLQCD·TWQCD collaborations·:·T. Kaneko·S. Aoki·T. W. Chiu·H. Fukaya·S. Hashimoto·T. H. Hsieh·H. Matsufuru·J. Noaki·T. Onogi·E. Shintani·N. Yamada
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Abstract

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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JLQCD, TWQCD collaborations, :, T. Kaneko, S. Aoki, T. W. Chiu, H. Fukaya, S. Hashimoto, T. H. Hsieh, H. Matsufuru, J. Noaki, T. Onogi, E. Shintani, N. Yamada. 2008-10-22. Pion vector and scalar form factors with dynamical overlap quarks. https://arxiv.org/abs/0810.2590

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