Constraining Unparticle Physics with Cosmology and Astrophysics

Abstract

It has recently been suggested that a scale invariant "unparticle" sector with a non-trivial infrared fixed point may couple to the Standard Model (SM) via higher dimensional operators. The weakness of such interactions hides the the unparticle phenomena at low energies. We demonstrate how cosmology and astrophysics can place significant bounds on the strength of unparticle-SM interactions. We also discuss the possibility of a having a non-negligible unparticle relic density today.

4 pages, RevTex4. Two figures and a reference added. Some minor changes. Main results and conclusions unchanged. Version accepted for publication by PRL

References in corpus (5)

• Unparticle Physics
• Another Odd Thing About Unparticle Physics
• Collider signals in unparticle physics
• Deconstruction of Unparticles
• Unparticle Physics Effects on D0-anti-D0 Mixing

Cited by in corpus (43)

• Minimal Walking Technicolor: Set Up for Collider Physics
• Conformal Windows of SU(N) Gauge Theories, Higher Dimensional Representations and The Size of The Unparticle World
• Unparticle physics effects in B_s mixing
• Unparticles-Higgs Interplay
• Long-range Electron Spin-spin Interactions from Unparticle Exchange
• Unparticle constraints from SN1987A
• Neutrino Decays and Neutrino Electron Elastic Scattering in Unparticle Physics
• Unparticle physics at hadron collider via dilepton production
• SUSY Unparticle and Conformal Sequestering
• Unparticle Physics and Supersymmetry Phenomenology
• Unparticles at heavy flavour scales: CP violating phenomena
• Unparticle effects in Supernovae cooling
• Astro Unparticle Physics
• Unparticle Physics with Jets
• Unraveling unparticles through violation of atomic parity and rare beauty
• Constraints on Unparticles from Low Energy Neutrino-Electron Scattering
• Unparticle physics at the photon collider
• The Cosmic Neutrino Background and the Age of the Universe
• Unparticle physics in diphoton production at the CERN LHC
• Constraints from Solar and Reactor Neutrinos on Unparticle Long-Range Forces
• Antisymmetric rank--2 tensor unparticle physics
• Un-particle Effective Action
• Test of unparticle long range forces from perihelion precession of Mercury
• Direct CP violation of $B\to l\nu$ in unparticle physics
• Signals of Unparticles in Low Energy Parity Violation and NuTeV Experiment
• Cosmological Unparticle Correlators
• Unparticle Physics and A_{FB}^b on the Z pole
• Unparticle decay of neutrinos and it's effect on ultra high energy neutrinos
• Probing the unparticle signal in $b\to d$ penguin processes
• Disentangling the Unparticles with polarized beams at e+e- colliders
• W-pair production in Unparticle Physics
• Unparticle physics with broken scale invariance
• Unparticle Induced Baryon Number Violating Nucleon Decays
• Effects of Unparticles on Running of Gauge Couplings
• Higgs Boson Decays into Single Photon plus Unparticle
• Unparticle physics effects in (Lambda_b -> Lambda + missing energy) processes
• Unparticle Searches Through Compton Scattering
• Top off the unparticle
• Unparticle Effects on Unitarity Constraints from Higgs Boson Scattering
• Unparticles: Interpretation and Cosmology
• Constraints on Astro-unparticle Physics from SN 1987A
• Unparticle-Enhanced Black Holes at the LHC
• On Unparticles and K+ to pi+ Missing Energy