Abstract

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Putting Dirac b quark on the lattice

Presenter: Tung-Han Hsieh — Academia Sinica

Ting-Wai Chiu, Tung-Han Hsieh, Chao-Hsi Huang, Kenji Ogawa (TWQCD collaboration)

We perform the first study of treating b, c, and s quarks as Dirac fermions in lattice QCD with exact chiral symmetry. On a 323 60 lattice with a−1 ≃ 7.68 GeV, we compute point-to-point quark propagators, and measure the time-correlation functions for mesons with quark contents bb, c b, s b, and c c. The lowest-lying meson mass spectra, the pseudoscalar decay constants, and the b and c quark masses are determined.