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

doi:10.1103/PhysRevD.70.074508

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

Physics And Astronomy

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91 Scopus citations

Abstract

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 language	English
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	70
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.70.074508
State	Published - 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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10.1103/PhysRevD.70.074508

Cite this

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title = "Study of pentaquarks on the lattice with overlap fermions",

abstract = "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].",

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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.",

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TY - JOUR

T1 - Study of pentaquarks on the lattice with overlap fermions

AU - Mathur, N.

AU - Lee, F. X.

AU - Alexandru, A.

AU - Bennhold, C.

AU - Chen, Y.

AU - Dong, S. J.

AU - Draper, T.

AU - Horváth, I.

AU - Liu, K. F.

AU - Tamhankar, S.

AU - Zhang, J. B.

N1 - 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.

PY - 2004

Y1 - 2004

N2 - 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].

AB - 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].

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Study of pentaquarks on the lattice with overlap fermions

Abstract

Bibliographical note

ASJC Scopus subject areas

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