Collider Signals of Unparticle Physics

Journal Article · Fri Aug 03 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.051803· OSTI ID:20957916

Cheung, K ^[1]; Keung, W -Y ^[2]; Yuan, T -C ^[1]

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1. Department of Physics, National Tsing Hua University, Hsinchu 300, Taiwan (China)
2. Department of Physics, University of Illinois, Chicago Illinois 60628 (United States)

Phenomenology of the notion of an unparticle U, recently perceived by Georgi, to describe a scale invariant sector with a nontrivial infrared fixed point at a higher energy scale is explored in details. Behaving like a collection of d{sub U} (the scale dimension of the unparticle operator O{sub U}) invisible massless particles, this unparticle can be unveiled by measurements of various energy distributions for the processes Z{yields}ffU and e{sup -}e{sup +}{yields}{gamma}U at e{sup -}e{sup +} colliders, as well as monojet production at hadron colliders. We also study the propagator effects of the unparticle through the Drell-Yan tree-level process and the one-loop muon anomaly.

• OSTI ID: 20957916
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 5 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
DRELL MODEL
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
ENERGY SPECTRA
HADRONS
MASSLESS PARTICLES
MUONS
POSITRONS
SCALE DIMENSION
SIGNALS