Exotic hybrid mesons and four-quark states

Claude Bernard; Thomas A. DeGrand; Carleton DeTar; Steven Gottlieb; Urs M. Heller; Jim Hetrick; Craig McNeile; Kari Rummukainen; Bob Sugar; Doug Toussaint; Matthew Wingate

doi:10.1016/S0920-5632(97)00723-8

Exotic hybrid mesons and four-quark states

Claude Bernard, Thomas A. DeGrand, Carleton DeTar, Steven Gottlieb, Urs M. Heller, Jim Hetrick, Craig McNeile, Kari Rummukainen, Bob Sugar, Doug Toussaint, Matthew Wingate

Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We calculate masses of mesons with exotic quantum numbers in the quenched approximation. Using a four quark source operator, we demonstrate mixing of the 1^-+ meson with four-quark states. Using the conventional Wilson quark action, we calculate both at reasonably light quark masses, intending to extrapolate to small quark mass, and near the charmed quark mass, where we calculate the masses of some c̄cg hybrid mesons. The hybrid masses are large - over 4 GeV for charmonium and more than twice the vector meson mass at the strange quark mass.

Original language	English (US)
Pages (from-to)	206-208
Number of pages	3
Journal	Nuclear Physics B - Proceedings Supplements
Volume	63
Issue number	1-3
DOIs	https://doi.org/10.1016/S0920-5632(97)00723-8
State	Published - Apr 1998

ASJC Scopus subject areas

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

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10.1016/S0920-5632(97)00723-8

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@article{f58d82560f804d378319b82b99acfec1,

title = "Exotic hybrid mesons and four-quark states",

abstract = "We calculate masses of mesons with exotic quantum numbers in the quenched approximation. Using a four quark source operator, we demonstrate mixing of the 1-+ meson with four-quark states. Using the conventional Wilson quark action, we calculate both at reasonably light quark masses, intending to extrapolate to small quark mass, and near the charmed quark mass, where we calculate the masses of some {\=c}cg hybrid mesons. The hybrid masses are large - over 4 GeV for charmonium and more than twice the vector meson mass at the strange quark mass.",

author = "Claude Bernard and DeGrand, {Thomas A.} and Carleton DeTar and Steven Gottlieb and Heller, {Urs M.} and Jim Hetrick and Craig McNeile and Kari Rummukainen and Bob Sugar and Doug Toussaint and Matthew Wingate",

note = "Funding Information: This work was supported by the U.S. Department of Energy and National Science Foundation. Computations were done at Oak Ridge National Laboratory and at the San Diego Supercomputer Center. We thank Maarten Golterman, Jeff Man-dula and Phillip Page for valuable conversations. D.T. is grateful for the hospitality of the University of Tsukuba, where this work was completed. C.D., U.H. and C.M. are grateful for the hospitality of the Zentrum fiir Interdisziplin~re Forschung at the University of Bielefeld.",

year = "1998",

month = apr,

doi = "10.1016/S0920-5632(97)00723-8",

language = "English (US)",

volume = "63",

pages = "206--208",

journal = "Nuclear Physics B - Proceedings Supplements",

issn = "0920-5632",

publisher = "Elsevier",

number = "1-3",

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TY - JOUR

T1 - Exotic hybrid mesons and four-quark states

AU - Bernard, Claude

AU - DeGrand, Thomas A.

AU - DeTar, Carleton

AU - Gottlieb, Steven

AU - Heller, Urs M.

AU - Hetrick, Jim

AU - McNeile, Craig

AU - Rummukainen, Kari

AU - Sugar, Bob

AU - Toussaint, Doug

AU - Wingate, Matthew

N1 - Funding Information: This work was supported by the U.S. Department of Energy and National Science Foundation. Computations were done at Oak Ridge National Laboratory and at the San Diego Supercomputer Center. We thank Maarten Golterman, Jeff Man-dula and Phillip Page for valuable conversations. D.T. is grateful for the hospitality of the University of Tsukuba, where this work was completed. C.D., U.H. and C.M. are grateful for the hospitality of the Zentrum fiir Interdisziplin~re Forschung at the University of Bielefeld.

PY - 1998/4

Y1 - 1998/4

N2 - We calculate masses of mesons with exotic quantum numbers in the quenched approximation. Using a four quark source operator, we demonstrate mixing of the 1-+ meson with four-quark states. Using the conventional Wilson quark action, we calculate both at reasonably light quark masses, intending to extrapolate to small quark mass, and near the charmed quark mass, where we calculate the masses of some c̄cg hybrid mesons. The hybrid masses are large - over 4 GeV for charmonium and more than twice the vector meson mass at the strange quark mass.

AB - We calculate masses of mesons with exotic quantum numbers in the quenched approximation. Using a four quark source operator, we demonstrate mixing of the 1-+ meson with four-quark states. Using the conventional Wilson quark action, we calculate both at reasonably light quark masses, intending to extrapolate to small quark mass, and near the charmed quark mass, where we calculate the masses of some c̄cg hybrid mesons. The hybrid masses are large - over 4 GeV for charmonium and more than twice the vector meson mass at the strange quark mass.

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U2 - 10.1016/S0920-5632(97)00723-8

DO - 10.1016/S0920-5632(97)00723-8

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SN - 0920-5632

VL - 63

SP - 206

EP - 208

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

IS - 1-3

ER -

Exotic hybrid mesons and four-quark states

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