Spin dependence of the heavy-quark potential: a QCD lattice analysis

K. D. Born; E. Laermann; T. F. Walsh; P. M. Zerwas

doi:10.1016/0370-2693(94)90781-1

Spin dependence of the heavy-quark potential: a QCD lattice analysis

K. D. Born, E. Laermann, T. F. Walsh, P. M. Zerwas

Physics and Astronomy (Twin Cities)

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

22 Scopus citations

Abstract

We have investigated the spin dependence of the potential between heavy quarks in full lattice QCD, including the effects of light quark loops. The form of the spin-orbit, the tensor and the spin-spin forces present clear evidence for long-range scalar confinement supplemented by a Coulomb force at short distances. This agrees with observations from quarkonium spectroscopy. The QCD simulation has been carried out for Kogut-Susskind fermions with four degrees of freedom at a gauge coupling β = 5.35 and a quark mass am_q = 0.01 on a 16³ × 24 size lattice. This corresponds to a lattice spacing 0.12 fm, a spatial lattice size of about 2 fm and a light quark mass of 48 MeV.

Original language	English (US)
Pages (from-to)	332-337
Number of pages	6
Journal	Physics Letters B
Volume	329
Issue number	2-3
DOIs	https://doi.org/10.1016/0370-2693(94)90781-1
State	Published - Jun 16 1994

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title = "Spin dependence of the heavy-quark potential: a QCD lattice analysis",

abstract = "We have investigated the spin dependence of the potential between heavy quarks in full lattice QCD, including the effects of light quark loops. The form of the spin-orbit, the tensor and the spin-spin forces present clear evidence for long-range scalar confinement supplemented by a Coulomb force at short distances. This agrees with observations from quarkonium spectroscopy. The QCD simulation has been carried out for Kogut-Susskind fermions with four degrees of freedom at a gauge coupling β = 5.35 and a quark mass amq = 0.01 on a 163 × 24 size lattice. This corresponds to a lattice spacing 0.12 fm, a spatial lattice size of about 2 fm and a light quark mass of 48 MeV.",

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T2 - a QCD lattice analysis

AU - Born, K. D.

AU - Laermann, E.

AU - Walsh, T. F.

AU - Zerwas, P. M.

PY - 1994/6/16

Y1 - 1994/6/16

N2 - We have investigated the spin dependence of the potential between heavy quarks in full lattice QCD, including the effects of light quark loops. The form of the spin-orbit, the tensor and the spin-spin forces present clear evidence for long-range scalar confinement supplemented by a Coulomb force at short distances. This agrees with observations from quarkonium spectroscopy. The QCD simulation has been carried out for Kogut-Susskind fermions with four degrees of freedom at a gauge coupling β = 5.35 and a quark mass amq = 0.01 on a 163 × 24 size lattice. This corresponds to a lattice spacing 0.12 fm, a spatial lattice size of about 2 fm and a light quark mass of 48 MeV.

AB - We have investigated the spin dependence of the potential between heavy quarks in full lattice QCD, including the effects of light quark loops. The form of the spin-orbit, the tensor and the spin-spin forces present clear evidence for long-range scalar confinement supplemented by a Coulomb force at short distances. This agrees with observations from quarkonium spectroscopy. The QCD simulation has been carried out for Kogut-Susskind fermions with four degrees of freedom at a gauge coupling β = 5.35 and a quark mass amq = 0.01 on a 163 × 24 size lattice. This corresponds to a lattice spacing 0.12 fm, a spatial lattice size of about 2 fm and a light quark mass of 48 MeV.

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VL - 329

SP - 332

EP - 337

JO - Physics Letters B

JF - Physics Letters B

IS - 2-3

ER -

Spin dependence of the heavy-quark potential: a QCD lattice analysis

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