Spin-3/2 baryons in lattice QCD
Date
2003
Authors
Zanotti, J.
Choe, S.
Leinweber, D.
Melnitchouk, W.
Williams, A.
Zhang, J.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Nuclear Physics B - Proceedings Supplements, 2003, vol.119, pp.299-301
Statement of Responsibility
J.M. Zanotti, S. Choe, D.B. Leinweber, W. Melnitchouk, A.G. Williams, and J.B. Zhang
Conference Name
20th International Symposium on Lattice Field Theory (24 Jun 2002 - 29 Jun 2002 : MIT, CAMBRIDGE, MA)
Abstract
We present first results for masses of spin-3/2 baryons in lattice QCD, using a novel fat-link clover fermion action in which only the irrelevant operators are constructed using fat links. In the isospin-1/2 sector, we observe, after appropriate spin and parity projection, a strong signal for the J^P=3/2^- state, and find good agreement between the 1/2^+ mass and earlier nucleon mass simulations with a spin-1/2 interpolating field. For the isospin-3/2 Delta states, clear mass splittings are observed between the various 1/2^+/- and 3/2^+/- channels, with the calculated level orderings in good agreement with those observed empirically.
School/Discipline
Dissertation Note
Provenance
Description
Copyright © 2003. Elsevier. 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.