Collider Signals of Unparticle Physics

2007/04/30 by Kingman Cheung, Wai-Yee Keung, Tzu-Chiang Yuan · 16 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevlett.99.051803

published as Phys.Rev.Lett.99:051803,2007 · 4 pages including 4 figures

openalex publication_date 2007/08/01 · arxiv created 2007/08/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

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_U (the scale dimension of the unparticle operator O_U) invisible massless particles, this unparticle can be unveiled by measurements of various energy distributions for the processes Z\ensuremath→ffU and e^\ensuremath-e⁺\ensuremath→\ensuremathγU at e^\ensuremath-e⁺ 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.

Citations

• Photon events with missing energy in e + e- collisions at √(s) = 130 to 209 GeV
• Radiative Corrections as the Origin of Spontaneous Symmetry Breaking

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