Charmonium spectrum from quenched QCD with overlap fermions

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

doi:10.1016/j.physletb.2006.04.055

Charmonium spectrum from quenched QCD with overlap fermions

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

Physics And Astronomy

Producción científica: Article › revisión exhaustiva

6 Citas (Scopus)

Resumen

We present the first study of the charmonium spectrum using overlap fermions, on quenched configurations. Simulations are performed on 16³ × 72 lattices, with Wilson gauge action at β = 6.3345. We demonstrate that we have discretization errors, as indicated by the dispersion relation, at about 5%. We obtain 88(4) MeV for the 1S hyperfine splitting using the r₀ scale, and 121(6) MeV using the (1 over(P, ̄) - 1 over(S, ̄)) scale. This Letter should encourage the pursuit of using the same chiral fermions for both heavy and light quarks on the same lattice.

Idioma original	English
Páginas (desde-hasta)	55-60
Número de páginas	6
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	638
N.º	1
DOI	https://doi.org/10.1016/j.physletb.2006.04.055
Estado	Published - jun 29 2006

Nota bibliográfica

Funding Information:
This work is supported in part by the U.S. Department of Energy under grants DE-FG05-84ER40154 and DE-FG02-95ER40907. The computing resources at NERSC (operated by DOE under DE-AC03-76SF00098) are also acknowledged. Y. Chen and S.J. Dong are partly supported by NSFC (#10235040 and #10075107).

Financiación

This work is supported in part by the U.S. Department of Energy under grants DE-FG05-84ER40154 and DE-FG02-95ER40907. The computing resources at NERSC (operated by DOE under DE-AC03-76SF00098) are also acknowledged. Y. Chen and S.J. Dong are partly supported by NSFC (#10235040 and #10075107).

Financiadores	Número del financiador
U.S. Department of Energy EPSCoR	DE-FG05-84ER40154, DE-FG02-95ER40907
National Natural Science Foundation of China (NSFC)	10075107, 10235040

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2006.04.055

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title = "Charmonium spectrum from quenched QCD with overlap fermions",

abstract = "We present the first study of the charmonium spectrum using overlap fermions, on quenched configurations. Simulations are performed on 163 × 72 lattices, with Wilson gauge action at β = 6.3345. We demonstrate that we have discretization errors, as indicated by the dispersion relation, at about 5\%. We obtain 88(4) MeV for the 1S hyperfine splitting using the r0 scale, and 121(6) MeV using the (1 over(P,{\= }) - 1 over(S,{\= })) scale. This Letter should encourage the pursuit of using the same chiral fermions for both heavy and light quarks on the same lattice.",

author = "S. Tamhankar and A. Alexandru and Y. Chen and Dong, \{S. J.\} and T. Draper and I. Horv{\'a}th and Lee, \{F. X.\} and Liu, \{K. F.\} and N. Mathur and Zhang, \{J. B.\}",

note = "Funding Information: This work is supported in part by the U.S. Department of Energy under grants DE-FG05-84ER40154 and DE-FG02-95ER40907. The computing resources at NERSC (operated by DOE under DE-AC03-76SF00098) are also acknowledged. Y. Chen and S.J. Dong are partly supported by NSFC (\#10235040 and \#10075107).",

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doi = "10.1016/j.physletb.2006.04.055",

language = "English",

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T1 - Charmonium spectrum from quenched QCD with overlap fermions

AU - Tamhankar, S.

AU - Alexandru, A.

AU - Chen, Y.

AU - Dong, S. J.

AU - Draper, T.

AU - Horváth, I.

AU - Lee, F. X.

AU - Liu, K. F.

AU - Mathur, N.

AU - Zhang, J. B.

N1 - Funding Information: This work is supported in part by the U.S. Department of Energy under grants DE-FG05-84ER40154 and DE-FG02-95ER40907. The computing resources at NERSC (operated by DOE under DE-AC03-76SF00098) are also acknowledged. Y. Chen and S.J. Dong are partly supported by NSFC (#10235040 and #10075107).

PY - 2006/6/29

Y1 - 2006/6/29

N2 - We present the first study of the charmonium spectrum using overlap fermions, on quenched configurations. Simulations are performed on 163 × 72 lattices, with Wilson gauge action at β = 6.3345. We demonstrate that we have discretization errors, as indicated by the dispersion relation, at about 5%. We obtain 88(4) MeV for the 1S hyperfine splitting using the r0 scale, and 121(6) MeV using the (1 over(P, ̄) - 1 over(S, ̄)) scale. This Letter should encourage the pursuit of using the same chiral fermions for both heavy and light quarks on the same lattice.

AB - We present the first study of the charmonium spectrum using overlap fermions, on quenched configurations. Simulations are performed on 163 × 72 lattices, with Wilson gauge action at β = 6.3345. We demonstrate that we have discretization errors, as indicated by the dispersion relation, at about 5%. We obtain 88(4) MeV for the 1S hyperfine splitting using the r0 scale, and 121(6) MeV using the (1 over(P, ̄) - 1 over(S, ̄)) scale. This Letter should encourage the pursuit of using the same chiral fermions for both heavy and light quarks on the same lattice.

UR - https://www.scopus.com/pages/publications/33744802347

UR - https://www.scopus.com/pages/publications/33744802347#tab=citedBy

U2 - 10.1016/j.physletb.2006.04.055

DO - 10.1016/j.physletb.2006.04.055

M3 - Article

AN - SCOPUS:33744802347

SN - 0370-2693

VL - 638

SP - 55

EP - 60

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1

ER -

Charmonium spectrum from quenched QCD with overlap fermions

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