首页    期刊浏览 2024年12月05日 星期四
登录注册

文章基本信息

  • 标题:The Exotic Baryon Theta^+(1540) on the Lattice
  • 本地全文:下载
  • 作者:D. Hierl ; C. Hagen ; A. Schafer
  • 期刊名称:PoS - Proceedings of Science
  • 印刷版ISSN:1824-8039
  • 出版年度:2005
  • 卷号:2005
  • 出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
  • 摘要:We report on a study of the pentaquark Q+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark sources to improve the signal and get reliable results even for small quark masses. The results of our quenched calculations, which have been done on a 123 24 lattice with a lattice spacing of a=0:148 fm, do not provide any evidence for the existence of a Q+ with positive parity. We do observe, however, a signal compatible with nucleon-kaon scattering state. For the negative parity the results are inconclusive, due to the potential mixture with nucleon-kaon and N-kaon scattering states.
国家哲学社会科学文献中心版权所有