Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/18026
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Type: | Conference paper |
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, vol.119, pp.293-295 |
Publisher: | Elsevier Science BV |
Issue Date: | 2003 |
ISSN: | 0920-5632 1873-3832 |
Conference Name: | 20th International Symposium on Lattice Field Theory (24 Jun 2002 - 29 Jun 2002 : MIT, CAMBRIDGE, MA) |
Statement of Responsibility: | 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 www.arXiv.org in 2003 by James Zanotti. Post-print sourced from www.arxiv.org. |
DOI: | 10.1016/S0920-5632(03)01542-1 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/505717/description#description |
Published version: | http://dx.doi.org/10.1016/S0920-5632(03)01542-1 |
Appears in Collections: | Aurora harvest 2 Physics publications |
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hdl_18026.pdf | 99.49 kB | Publisher's Post-print | View/Open |
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