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Physical review letters >
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http://hdl.handle.net/2241/101677
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| Title: | S Parameter and Pseudo Nambu-Goldstone Boson Mass from Lattice QCD |
| Authors: | Shintani, E.
Aoki, S.
Fukaya, H.
Hashimoto, S.
Kaneko, T.
Matsufuru, H.
Onogi, T.
Yamada, N.
青木, 愼也 |
| Issue Date: | Dec-2008 |
| Publisher: | American Physical Society |
| Journal Title: | Physical review letters |
| Volume: | 101 |
| Issue: | 24 |
| Start Page: | 242001 |
| DOI: | 10.1103/PhysRevLett.101.242001 |
| PMID: | 19113615 |
| Abstract: | We present a lattice calculation of L10, one of the low-energy constants in chiral perturbation theory, and the charged-neutral pion squared-mass splitting, using dynamical overlap fermion. The exact chiral symmetry of the overlap fermion allows us to reliably extract these quantities from the difference of the vacuum polarization functions for vector and axial-vector currents. In the context of the technicolor models, these two quantities are read as the S parameter and the pseudo Nambu-Goldstone boson mass, respectively, and play an important role in discriminating the models from others. This calculation can serve as a feasibility study of the lattice techniques for more general technicolor gauge theories. |
| URI: | http://hdl.handle.net/2241/101677 |
| Rights: | ©2008 The American Physical Society |
| Text Version: | publisher |
| Appears in Collections: | Physical review letters
青木 愼也 (Aoki Sinya)
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