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High Energy Physics - Lattice

arXiv:hep-lat/0501021 (hep-lat)
[Submitted on 24 Jan 2005]

Title:Baryon Masses in Lattice QCD with Exact Chiral Symmetry

Authors:Ting-Wai Chiu, Tung-Han Hsieh
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Abstract: We investigate the baryon mass spectrum in quenched lattice QCD with exact chiral symmetry. For 100 gauge configurations generated with Wilson gauge action at $ \beta = 6.1 $ on the $ 20^3 \times 40 $ lattice, we compute (point-to-point) quark propagators for 30 quark masses in the range $ 67 {MeV} \le m_q \le 1790 {MeV} $. For baryons only composed of strange and charm quarks, their masses are extracted directly from the time correlation functions, while for those containing $ u (d) $ light quarks, their masses are obtained by chiral extrapolation to $ m_\pi = 135 $ MeV. Our results of baryon masses are in good agreement with experimental values, except for the negative parity states of $ \Lambda $ and $ \Lambda_c $. Further, our results of charmed (including doubly-charmed and triply-charmed) baryons can serve as predictions of QCD.
Comments: 4 pages, 2 EPS figures, to appear in the Proceedings of Baryons 2004, Palaiseau, France, October 25-29, 2004
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Cite as: arXiv:hep-lat/0501021
  (or arXiv:hep-lat/0501021v1 for this version)
  https://doi.org/10.48550/arXiv.hep-lat/0501021
Journal reference: Nucl.Phys.A755:471-474,2005
Related DOI: https://doi.org/10.1016/j.nuclphysa.2005.03.090

Submission history

From: Ting-Wai Chiu [view email]
[v1] Mon, 24 Jan 2005 00:24:30 UTC (57 KB)
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