Indirect Detection of Little Higgs Dark Matter

Abstract

Little Higgs models with T parity contain an attractive dark matter candidate, the heavy photon. We compute the cross section of the heavy photon annihilation into Z-photon pairs, which turns out to be substantially higher than the previously computed cross section for the two photon final state. Unfortunately, even with this enhancement, the monochromatic photon flux from galactic heavy photon annihilation is unlikely to be detectable by GLAST or the currently operating atmospheric Cerenkov telescopes. We also compute the flux of high-energy neutrinos from the annihilation of the heavy photons captured by the Sun and the Earth. The maximum flux of upward-going muons due to such neutrinos is about 1 yr^{-1}km^{-2}.

13 pages, 3 figures

References in corpus (7)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Phenomenology of Littlest Higgs Model with T-parity: including effects of T-odd fermions
• Another Look at the Flavour Structure of the Littlest Higgs Model with T-Parity
• Cosmic Positron Signature from Dark Matter in the Littlest Higgs Model with T-parity
• Challenges in Detecting Gamma-Rays From Dark Matter Annihilations in the Galactic Center
• Phenomenology of Mirror Fermions in the Littlest Higgs Model with T-Parity
• Dark Matter and the CACTUS Gamma-Ray Excess from Draco

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• A Weakly Coupled Ultraviolet Completion of the Littlest Higgs with T-parity
• Discriminating dark matter candidates using direct detection
• Testing the Littlest Higgs Model with T-parity at the Large Hadron Collider
• Top quark chromomagnetic dipole moment in the littlest Higgs model with T-parity
• Pair production of the heavy leptons in future high energy linear e^{+}e^{-} colliders
• The impossibility of heavy neutrino dark matter in the Littlest Higgs Model with T-parity: constraints from direct search
• Associated production of the scalars and new gauge bosons from a little Higgs model at the LHC
• Restudy on Dark Matter Time-Evolution in the Littlest Higgs model with T-parity