Lattice Calculation of Baryon Masses using Clover Fermion Action

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We present a calculation of the lowest-lying baryon masses in the quenched approximation to QCD. The calculations are performed using a non-perturbatively improved clover fermion action, and a splitting found between the masses of the nucleon and its parity partner. An analysis of the mass of the first radial excitation of the nucleon finds a value considerably larger than that of the parity partner of the nucleon, and thus little evidence for the Roper resonance as a simple three-quark state.

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Richards, D.G.; Gockeler, M.; Rakow, P.E.L.; Pleiter, D.; Schierholz, G.; Horsley, R. et al. March 1, 2002.

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We present a calculation of the lowest-lying baryon masses in the quenched approximation to QCD. The calculations are performed using a non-perturbatively improved clover fermion action, and a splitting found between the masses of the nucleon and its parity partner. An analysis of the mass of the first radial excitation of the nucleon finds a value considerably larger than that of the parity partner of the nucleon, and thus little evidence for the Roper resonance as a simple three-quark state.

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101 Kilobytes pages

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  • Baryons 2002, Newport News, VA (US), 03/03/2002--03/08/2002

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  • Report No.: JLAB-THY-02-21
  • Report No.: DOE/ER/40150-2069
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 794084
  • Archival Resource Key: ark:/67531/metadc742701

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  • March 1, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 5, 2016, 9:38 p.m.

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Richards, D.G.; Gockeler, M.; Rakow, P.E.L.; Pleiter, D.; Schierholz, G.; Horsley, R. et al. Lattice Calculation of Baryon Masses using Clover Fermion Action, article, March 1, 2002; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc742701/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.