Charmonium with improved Wilson fermions II: The spectrum

Aida X. El-Khadra

doi:10.1016/0920-5632(92)90279-2

Charmonium with improved Wilson fermions II: The spectrum

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Abstract

Using an improved fermion action to remove lattice spacing errors of O(a), we have calculated the charmonium spectrum. We show that after optimizing the ground state overlap using Coulomb gauge wave functions the ground state is reached after two time slices. We find for the J ψ - η_c mass splitting m_{J ψ} - m_{η_c} = 73 ± 10 MeV.

Original language	English (US)
Pages (from-to)	372-374
Number of pages	3
Journal	Nuclear Physics B (Proceedings Supplements)
Volume	26
Issue number	C
DOIs	https://doi.org/10.1016/0920-5632(92)90279-2
State	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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10.1016/0920-5632(92)90279-2

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title = "Charmonium with improved Wilson fermions II: The spectrum",

abstract = "Using an improved fermion action to remove lattice spacing errors of O(a), we have calculated the charmonium spectrum. We show that after optimizing the ground state overlap using Coulomb gauge wave functions the ground state is reached after two time slices. We find for the J ψ - ηc mass splitting m J ψ - mηc = 73 ± 10 MeV.",

author = "El-Khadra, {Aida X.}",

year = "1992",

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language = "English (US)",

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publisher = "Elsevier B.V.",

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AU - El-Khadra, Aida X.

PY - 1992

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N2 - Using an improved fermion action to remove lattice spacing errors of O(a), we have calculated the charmonium spectrum. We show that after optimizing the ground state overlap using Coulomb gauge wave functions the ground state is reached after two time slices. We find for the J ψ - ηc mass splitting m J ψ - mηc = 73 ± 10 MeV.

AB - Using an improved fermion action to remove lattice spacing errors of O(a), we have calculated the charmonium spectrum. We show that after optimizing the ground state overlap using Coulomb gauge wave functions the ground state is reached after two time slices. We find for the J ψ - ηc mass splitting m J ψ - mηc = 73 ± 10 MeV.

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U2 - 10.1016/0920-5632(92)90279-2

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VL - 26

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JO - Nuclear Physics B (Proceedings Supplements)

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Charmonium with improved Wilson fermions II: The spectrum

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