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https://hdl.handle.net/2440/29099
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Type: | Conference paper |
Title: | Spin-3/2 pentaquark resonance signature |
Author: | Lasscock, B. Hedditch, J. Leinweber, D. Williams, A. Kamleh, W. Melnitchouk, W. Thomas, A. Young, R. Zanotti, J. |
Citation: | Proceedings of Science: XXIIIrd International Symposium on Lattice Field Theory, 25-30 July 2005 / pp.067-1-067-6 |
Publisher: | Scuola Internazionale Superiore di Studi Avanzati |
Publisher Place: | Italy |
Issue Date: | 2005 |
ISSN: | 1824-8039 |
Conference Name: | International Symposium on Lattice Field Theory (23rd : 2005 : Dublin, Ireland) |
Editor: | Irving, A. McNeile, C. Michael, C. |
Abstract: | We search for the standard lattice resonance signature of attraction between the resonance constituents which leads to a bound state at quark masses near the physical regime. We study a variety of spin- 1/2 interpolators and for the first time, interpolators providing access to spin- 3/2 pentaquark states. In looking for evidence of binding, a precise determination of the mass splitting between the pentaquark state and its lowest-lying decay channel is performed by constructing the effective mass splitting from the various two-point correlation functions. While the binding of the pentaquark state is not a requirement, the observation of such binding would provide compelling evidence for the existence of the Θ⁺ pentaquark resonance. Evidence of binding is observed in the isoscalar spin- 3/2 positive parity channel, making it an interesting state for further research. |
Rights: | Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. |
DOI: | 10.22323/1.020.0067 |
Published version: | http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=20 |
Appears in Collections: | Aurora harvest 6 Special Research Centre for the Subatomic Structure of Matter publications |
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