Chin. Phys. Lett.  2003, Vol. 20 Issue (5): 626-628    DOI:
Original Articles |
Empirical Baye’s Method and Roper Resonance State in Very Light Quark Region
DONG Shao-Jing1,2;ZHANG Jian-Bo1,3;YING He-Ping1
1Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 310027 2Computing Center, University of Kentucky, Lexington, KY 40506, USA CSSM and Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, SA 5005, Australia
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DONG Shao-Jing, ZHANG Jian-Bo, YING He-Ping 2003 Chin. Phys. Lett. 20 626-628
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Abstract Based on the Bayesian theorem, an empirical Baye method is discussed. A programming chart for mass spectrum fitting is suggested. Using this method to extract the spectrum, we observe the puzzled Roper resonance state on a 163 x 28 lattice with overlap fermions at very light quark region.

Keywords: 11.15.Ha      12.38.Gc      24.10.Lx     
Published: 01 May 2003
PACS:  11.15.Ha (Lattice gauge theory)  
  12.38.Gc (Lattice QCD calculations)  
  24.10.Lx (Monte Carlo simulations (including hadron and parton cascades and string breaking models))  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I5/0626
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