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Type: Journal article
Title: Excited baryons from the FLIC fermion action
Author: Melnitchouk, W.
Hedditch, J.
Leinweber, D.
Williams, A.
Zanotti, J.
Zhang, J.
Citation: Nuclear Physics B-Proceedings Supplements, 2003; 119:293-295
Publisher: Elsevier Science BV
Issue Date: 2003
ISSN: 0920-5632
Statement of
W. Melnitchouk, J.N. Hedditch, D.B. Leinweber, A.G. Williams, J.M. Zanotti and J.B. Zhang
Abstract: Masses of positive and negative parity excited nucleons and hyperons are calculated in quenched lattice QCD using an O(a^2) improved gluon action and a fat-link clover fermion action in which only the irrelevant operators are constructed with fat links. The results are in agreement with earlier N* simulations with improved actions, and exhibit a clear mass splitting between the nucleon and its parity partner, as well as a small mass splitting between the two low-lying J^P={1/2}^- N* states. Study of different Lambda interpolating fields suggests a similar splitting between the lowest two {1/2}^- Lambda* states, although the empirical mass suppression of the Lambda*(1405) is not seen.
Description: Copyright © 2003 Published by Elsevier B.V. Printed in U.S.A. Submitted to Cornell University’s online archive in 2003 by James Zanotti. Post-print sourced from
RMID: 0020030174
DOI: 10.1016/S0920-5632(03)01542-1
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