| Full lattice QCD study of the κ scalar meson |
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| 作者姓名： | 傅子文 Carleton DeTar |
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| 作者单位： | 1. Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China;;2. Physics Department, University of Utah, Salt Lake City, UT 84112, USA |
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| 基金项目： | Supported by Fundamental Research Funds for the Central Universities(2010SCU23002) |
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| 摘 要： | We studied the κ light scalar meson in 2+1 flavor full QCD with sufficiently light u and d quarks. Via lattice simulation we measured the correlators for the κ channel in the “Asqtad” improved staggered fermion formulation. After chiral extrapolation we obtained the mass of the κ meson with 826±119 MeV, which is within recent experimental values of 800-900 MeV. The simulations were carried out with the MILC 2+1 flavor gauge configurations at lattice spacing a ≈ 0.15 fm.
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| 关 键 词： | lattice QCD kappa meson chiral extrapolation |
| 收稿时间： | 2011-03-07 |
| 修稿时间： | 2011-04-07 |
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