Excited states for heavy quark systems in NRQCD

S. M. Catterall; F. R. Devlin; I. T. Drummond; R. R. Horgan

doi:10.1016/0920-5632(94)90409-X

Excited states for heavy quark systems in NRQCD

S. M. Catterall, F. R. Devlin, I. T. Drummond, R. R. Horgan

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

1 Scopus citations

Abstract

Following the Non-Relativistic QCD approach we use a gauge invariant smearing method with factorization to measure the excitation energies for a heavy QQ system on a 24³ × 48 lattice at β = 6.2. The quark Hamiltonian contains only the simplest non-relativistic kinetic energy term. The mass splittings are not sensitive to the quark mass. For an appropriate choice of UV cut-off (a^-1 = 3.2Gev) the mass spectrum compares reasonably well with the experimental values for the spin-averaged energy gaps of the υ system. Our results for the DE and DT waves at the lowest bare quark mass exhibit degeneracy between the two D-waves.

Original language	English (US)
Pages (from-to)	431-433
Number of pages	3
Journal	Nuclear Physics B (Proceedings Supplements)
Volume	34
Issue number	C
DOIs	https://doi.org/10.1016/0920-5632(94)90409-X
State	Published - Apr 1994
Externally published	Yes

ASJC Scopus subject areas

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

Access to Document

10.1016/0920-5632(94)90409-X

Cite this

@article{aa23092c1c494108b7c3865ddfb9462e,

title = "Excited states for heavy quark systems in NRQCD",

abstract = "Following the Non-Relativistic QCD approach we use a gauge invariant smearing method with factorization to measure the excitation energies for a heavy QQ system on a 243 × 48 lattice at β = 6.2. The quark Hamiltonian contains only the simplest non-relativistic kinetic energy term. The mass splittings are not sensitive to the quark mass. For an appropriate choice of UV cut-off (a-1 = 3.2Gev) the mass spectrum compares reasonably well with the experimental values for the spin-averaged energy gaps of the υ system. Our results for the DE and DT waves at the lowest bare quark mass exhibit degeneracy between the two D-waves.",

author = "Catterall, {S. M.} and Devlin, {F. R.} and Drummond, {I. T.} and Horgan, {R. R.}",

year = "1994",

month = apr,

doi = "10.1016/0920-5632(94)90409-X",

language = "English (US)",

volume = "34",

pages = "431--433",

journal = "Nuclear Physics B (Proceedings Supplements)",

issn = "0920-5632",

publisher = "Elsevier",

number = "C",

}

TY - JOUR

T1 - Excited states for heavy quark systems in NRQCD

AU - Catterall, S. M.

AU - Devlin, F. R.

AU - Drummond, I. T.

AU - Horgan, R. R.

PY - 1994/4

Y1 - 1994/4

N2 - Following the Non-Relativistic QCD approach we use a gauge invariant smearing method with factorization to measure the excitation energies for a heavy QQ system on a 243 × 48 lattice at β = 6.2. The quark Hamiltonian contains only the simplest non-relativistic kinetic energy term. The mass splittings are not sensitive to the quark mass. For an appropriate choice of UV cut-off (a-1 = 3.2Gev) the mass spectrum compares reasonably well with the experimental values for the spin-averaged energy gaps of the υ system. Our results for the DE and DT waves at the lowest bare quark mass exhibit degeneracy between the two D-waves.

AB - Following the Non-Relativistic QCD approach we use a gauge invariant smearing method with factorization to measure the excitation energies for a heavy QQ system on a 243 × 48 lattice at β = 6.2. The quark Hamiltonian contains only the simplest non-relativistic kinetic energy term. The mass splittings are not sensitive to the quark mass. For an appropriate choice of UV cut-off (a-1 = 3.2Gev) the mass spectrum compares reasonably well with the experimental values for the spin-averaged energy gaps of the υ system. Our results for the DE and DT waves at the lowest bare quark mass exhibit degeneracy between the two D-waves.

UR - http://www.scopus.com/inward/record.url?scp=43949161136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43949161136&partnerID=8YFLogxK

U2 - 10.1016/0920-5632(94)90409-X

DO - 10.1016/0920-5632(94)90409-X

M3 - Article

AN - SCOPUS:43949161136

SN - 0920-5632

VL - 34

SP - 431

EP - 433

JO - Nuclear Physics B (Proceedings Supplements)

JF - Nuclear Physics B (Proceedings Supplements)

IS - C

ER -

Excited states for heavy quark systems in NRQCD

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this