dorsal/arxiv
View SchemaSoft gluons are heavy and rowdy
| Authors | Reinhard Alkofer, Pedro Bicudo, Stephen R. Cotanch, Christian S. Fischer, Felipe J. Llanes-Estrada |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0601032 |
| URL | https://arxiv.org/abs/nucl-th/0601032 |
Abstract
We study dynamical mass generation in pure Yang-Mills theory and report on a recently developed ansatz that exactly solves the tower of Dyson-Schwinger equations in Landau gauge at low Euclidean momentum, featuring enhanced gluon-gluon vertices, a finite ghost-gluon vertex in agreement with an old argument of Taylor, and an IR suppressed gluon propagator. This ansatz reinforces arguments in favor of the concept of a gluon mass gap at low momentum (although the minimum of the gluon's dispersion relation is not at zero momentum). As an application, we have computed the spectrum of oddballs, three-gluon glueballs with negative parity and C-parity. The three body problem is variationally solved employing the color density-density interaction of Coulomb gauge QCD with a static Cornell potential. Like their even glueball counterparts, oddballs fall on Regge trajectories with similar slope to the pomeron. However their intercept at t=0 is smaller than the omega Regge trajectory and therefore the odderon may only be visible in experimental searches (for example at BNL) with higher -t than conducted to date at DESY.
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"abstract": "We study dynamical mass generation in pure Yang-Mills theory and report on a\nrecently developed ansatz that exactly solves the tower of Dyson-Schwinger\nequations in Landau gauge at low Euclidean momentum, featuring enhanced\ngluon-gluon vertices, a finite ghost-gluon vertex in agreement with an old\nargument of Taylor, and an IR suppressed gluon propagator. This ansatz\nreinforces arguments in favor of the concept of a gluon mass gap at low\nmomentum (although the minimum of the gluon\u0027s dispersion relation is not at\nzero momentum). As an application, we have computed the spectrum of oddballs,\nthree-gluon glueballs with negative parity and C-parity. The three body problem\nis variationally solved employing the color density-density interaction of\nCoulomb gauge QCD with a static Cornell potential. Like their even glueball\ncounterparts, oddballs fall on Regge trajectories with similar slope to the\npomeron. However their intercept at t=0 is smaller than the omega Regge\ntrajectory and therefore the odderon may only be visible in experimental\nsearches (for example at BNL) with higher -t than conducted to date at DESY.",
"arxiv_id": "nucl-th/0601032",
"authors": [
"Reinhard Alkofer",
"Pedro Bicudo",
"Stephen R. Cotanch",
"Christian S. Fischer",
"Felipe J. Llanes-Estrada"
],
"categories": [
"nucl-th"
],
"title": "Soft gluons are heavy and rowdy",
"url": "https://arxiv.org/abs/nucl-th/0601032"
},
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