Baryon Resonances from a Novel Fat-Link Fermion Action

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We present first results for masses of positive and negative parity excited baryons in lattice QCD using an O(a{sup 2}) improved gluon action and a Fat Link Irrelevant Clover (FLIC) fermion action in which only the irrelevant operators are constructed with fat links. The results are in agreement with earlier calculations of N* resonances using improved actions and exhibit a clear mass splitting between the nucleon and its chiral partner, even for the Wilson fermion action. The results also indicate a splitting between the lowest J{sup P}=1/2{sup -} states for the standard nucleon interpolating fields.

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324 Kilobytes pages

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Melnitchouk, W.; Bilson-Thompson, S.; Bonnet, F. D. R.; Coddington, P. D.; Lee, F. X.; Leinweber, D. B. et al. July 1, 2001.

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We present first results for masses of positive and negative parity excited baryons in lattice QCD using an O(a{sup 2}) improved gluon action and a Fat Link Irrelevant Clover (FLIC) fermion action in which only the irrelevant operators are constructed with fat links. The results are in agreement with earlier calculations of N* resonances using improved actions and exhibit a clear mass splitting between the nucleon and its chiral partner, even for the Wilson fermion action. The results also indicate a splitting between the lowest J{sup P}=1/2{sup -} states for the standard nucleon interpolating fields.

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324 Kilobytes pages

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  • Proceedings of Workshop on Lattice Hadron Physics, Cairns (AU), 07/09/2001--07/18/2001

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  • Report No.: JLAB-THY-01-40
  • Report No.: DOE/ER/40150-1970
  • Report No.: ADP-01-55/T487
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 789642
  • Archival Resource Key: ark:/67531/metadc722683

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  • July 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 5, 2016, 7:51 p.m.

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Melnitchouk, W.; Bilson-Thompson, S.; Bonnet, F. D. R.; Coddington, P. D.; Lee, F. X.; Leinweber, D. B. et al. Baryon Resonances from a Novel Fat-Link Fermion Action, article, July 1, 2001; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc722683/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.