Adelaide Research & Scholarship
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https://hdl.handle.net/2440/11155
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| Type: | Journal article |
| Title: | Study of pentaquarks on the lattice with overlap fermions |
| Author: | Mathur, Nilmani Lee, Frank X. Alexandru, Andrei Bennhold, C. Chen, Yanbei Dong, Shao-Jing Draper, Terrence Horvath, Ivan Liu, K. F. Tamhankar, Sonali Zhang, Jian-Bo |
| Citation: | Physical Review D, 2004; 70(7):074508 |
| Publisher: | American Physical Society |
| Issue Date: | 2004 |
| ISSN: | 0556-2821 |
| School/Discipline: | School of Chemistry and Physics : Physics and Mathematical Physics |
| 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 |
| 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. |
| Rights: | ©2004 American Physical Society |
| DOI: | 10.1103/PhysRevD.70.074508 |
| Appears in Collections: | Special Research Centre for the Subatomic Structure of Matter publications |
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| hdl_11155.pdf | 203.41 kB | Adobe PDF | View/Open |
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