6533b83afe1ef96bd12a7bcc
RESEARCH PRODUCT
A Tachyonic Gluon Mass: Between Infrared and Ultraviolet
Stephan J. HuberMichael G. SchmidtMartin Reutersubject
Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsQCD sum rulesParticle physicsStochastic vacuum modelHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyFOS: Physical sciencesCoupling (probability)GluonMomentumHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentGauge theorySpin-½description
The gluon spin coupling to a Gaussian correlated background gauge field induces an effective tachyonic gluon mass. It is momentum dependent and vanishes in the UV only like 1/p^2. In the IR, we obtain stabilization through a positive m^2_{conf}(p^2) related to confinement. Recently a purely phenomenological tachyonic gluon mass was used to explain the linear rise in the q\bar q static potential at small distances and also some long standing discrepancies found in QCD sum rules. We show that the stochastic vacuum model of QCD predicts a gluon mass with the desired properties.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-06-14 |