Study of pentaquarks on the lattice with overlap fermions
Files
(Published version)
Date
2004
Authors
Mathur, Nilmani
Lee, Frank X.
Alexandru, Andrei
Bennhold, C.
Chen, Yanbei
Dong, Shao-Jing
Draper, Terrence
Horvath, Ivan
Liu, K. F.
Tamhankar, Sonali
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Physical Review D, 2004; 70(7):074508
Statement of Responsibility
N. Mathur, F. X. Lee, A. Alexandru, C. Bennhold, Y. Chen, S. J. Dong, T. Draper, I. Horváth, K. F. Liu, S. Tamhankar, and J. B. Zhang
Conference Name
Abstract
We present a quenched lattice QCD calculation of spin-1/2 five-quark states with uudds̅ quark content for both positive and negative parities. We do not observe any bound pentaquark state in these channels for either I=0 or I=1. The states we found are consistent with KN 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, 12³×28 and 16³×28, with the same lattice spacing of 0.2 fm, and pion mass as low as ∼180 MeV.
School/Discipline
School of Chemistry and Physics : Physics and Mathematical Physics
Dissertation Note
Provenance
Description
Access Status
Rights
©2004 American Physical Society