η' Meson from Two Flavor Dynamical Domain Wall Fermions(Particles and Fields)

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概要

• 論文の詳細を見る

• We explore the spectrum of a flavor singlet pseudoscalar meson, η', in two-flavor (N_f=2) lattice Quantum Chromo Dynamics (QCD). The continuum-like relation between the topology of the QCD vacuum and the U(1)_A anomaly, which prevents the η' meson from being a Nambu-Goldstone boson, is expected to hold in the domain wall fermions (DWF) used as a lattice quark field in this work. Although our simulation is limited to relatively heavy quark masses and the statistical error is not small despite the improvements in the measurements and fitting procedures for meson propagators, we obtained m_<η'>=819(127) MeV for the N_f=2 QCD, where the error is only statistical. Several sources of systematic errors, which may be significant, are discussed. Results for the other mesons are also reported.

• 2008-04-25

著者

• Izubuchi Taku

  Institute For Theoretical Physics Kanazawa University:riken-bnl Research Center Brookhaven National

• HASHIMOTO Koichi

  Institute for Theoretical Physics, Kanazawa University

• Hashimoto Koichi

  Institute For Theoretical Physics Kanazawa University:radiation Laboratory Riken

• IZUBUCHI Taku

  Institute for Theoretical Physics, Kanazawa University:RIKEN-BNL Research Center, Brookhaven National Laboratory

• HASHIMOTO Koichi

  Institute for Theoretical Physics, Kanazawa University:Radiation Laboratory, RIKEN

関連論文

• η' Meson from Two Flavor Dynamical Domain Wall Fermions(Particles and Fields)

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