6533b853fe1ef96bd12ad675
RESEARCH PRODUCT
Unparticle physics with jets
Matthias NeubertMatthias Neubertsubject
PhysicsQuantum chromodynamicsParticle physicsNuclear and High Energy PhysicsHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyUnparticle physicsFOS: Physical sciencesJet (particle physics)Standard ModelHidden sectorHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Effective field theoryQuantum field theoryResummationdescription
Using methods of effective field theory, we show that after resummation of Sudakov logarithms the spectral densities of interacting quark and gluon fields in ordinary quantum field theories such as QCD are virtually indistinguishable from those of "unparticles" of a hypothetical conformal sector coupled to the Standard Model, recently studied by Georgi. Unparticles are therefore less exotic that originally thought. Models in which a hidden sector weakly coupled to the Standard Model contains a QCD-like theory, which confines at some scale much below the characteristic energy of a given process, can give rise to signatures closely resembling those from unparticles.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-07-31 | Physics Letters B |