%0 Generic %1 shintani2008sparameter %A Shintani, E. %A Aoki, S. %A Fukaya, H. %A Hashimoto, S. %A Kaneko, T. %A Matsufuru, H. %A Onogi, T. %A Yamada, N. %A Collaboration, for JLQCD %D 2008 %K spurion %R 10.1103/PhysRevLett.101.242001 %T S-parameter and pseudo-Nambu-Goldstone boson mass from lattice QCD %U http://arxiv.org/abs/0806.4222 %X We present a lattice calculation of $L_10$, one of the low energy constants in Chiral Perturbation Theory, and the charged-neutral pion squared mass splitting, using dynamical overlap fermion. 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.

@misc{shintani2008sparameter, abstract = {We present a lattice calculation of $L_{10}$, one of the low energy constants in Chiral Perturbation Theory, and the charged-neutral pion squared mass splitting, using dynamical overlap fermion. 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.}, added-at = {2019-07-12T14:23:22.000+0200}, author = {Shintani, E. and Aoki, S. and Fukaya, H. and Hashimoto, S. and Kaneko, T. and Matsufuru, H. and Onogi, T. and Yamada, N. and Collaboration, for JLQCD}, biburl = {https://www.bibsonomy.org/bibtex/2828853fdb7c98c230ed18cc5913d47df/cmcneile}, description = {S-parameter and pseudo-Nambu-Goldstone boson mass from lattice QCD}, doi = {10.1103/PhysRevLett.101.242001}, interhash = {3d3aa48cd232c568d316920ed72b51ac}, intrahash = {828853fdb7c98c230ed18cc5913d47df}, keywords = {spurion}, note = {cite arxiv:0806.4222Comment: 9 pages, 3 figures, references added, minor corrections made, version to appear in PRL}, timestamp = {2019-07-12T14:23:22.000+0200}, title = {S-parameter and pseudo-Nambu-Goldstone boson mass from lattice QCD}, url = {http://arxiv.org/abs/0806.4222}, year = 2008 }