Study of pentaquarks on the lattice with overlap fermions

N. Mathur, F. X. Lee, A. Alexandru, C. Bennhold, Y. Chen, S. J. Dong, T. Draper, I. Horváth, K. F. Liu, S. Tamhankar, J. B. Zhang

Research output: Contribution to journalArticlepeer-review

94 Scopus citations


We present a quenched lattice QCD calculation of spin-[Formula Presented] five-quark states with [Formula Presented] quark content for both positive and negative parities. We do not observe any bound pentaquark state in these channels for either [Formula Presented] or [Formula Presented]. The states we found are consistent with [Formula Presented] scattering states which are checked to exhibit the expected volume dependence of the spectral weight. The results are based on overlap-fermion propagators on two lattices, [Formula Presented] and [Formula Presented], with the same lattice spacing of 0.2 fm, and pion mass as low as [Formula Presented].

Original languageEnglish
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number7
StatePublished - 2004

Bibliographical note

Funding Information:
We thank S. Sasaki for useful discussions. This work is supported in part by U.S. Department of Energy under Grant No. DE-FG05-84ER40154 and No. DE-FG02-95ER40907. The computing resources at NERSC (operated by DOE under No. DE-AC03-76SF00098) are also acknowledged.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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