ムロヤ シン   Shin.MUROYA
室谷 心

  • 所属   松本大学  総合経営学部 総合経営学科
  • 職種   教授
言語種別 英語
発行・発表の年月 2019/03
形態種別 研究発表要旨(国際会議)
査読 査読あり
標題 Mass of $a_1$ meson from lattice QCD with the truncated overlap fermions
執筆形態 共著
掲載誌名 , JPS Conference Proceedings
掲載区分国内
出版社・発行元 The Physical Society of Japan
巻・号・頁 26,pp.031007
総ページ数 4
著者・共著者 Y. Murakami, S. Muroya, A. Nakamura, C. Nonaka, M. Sekiguchi, M.Wakayama, H. Wada,
概要 We report our recent study of the a1 meson using a quenched lattice quantum chromodynamics simulation with the truncated overlap fermions formalism based on the domain wall fermions. The obtained lightest mass of the a1 meson, 1272(45) MeV, is consistent with the experimental value for a1(1260). Thus, a1(1260) can be identified to have a simple two-body constituent-quark structure. Our quenched simulation result of a1(1420) cannot explain the experimental mass value, which suggests a1(1420) is not a simple qq¯ two quark state.

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