Pion vector and scalar form factors with dynamical overlap quarks
| Autor: | JLQCD, collaborations, TWQCD, Kaneko, T., Aoki, S., Chiu, T. W., Fukaya, H., Hashimoto, S., Hsieh, T. H., Matsufuru, H., Noaki, J., Onogi, T., Shintani, E., Yamada, N. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | PoS LATTICE2008:158,2008 |
| Druh dokumentu: | Working Paper |
| Popis: | 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. Comment: 7 pages; Talk presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19 2008, Williamsburg, Virginia, USA; v2: a reference added |
| Databáze: | arXiv |
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