Direct Detection of Kaluza-Klein Particles in Neutrino Telescopes

Abstract

In theories with universal extra dimensions (UEDs), all standard model fields propagate in the bulk and the lightest state of the first Kaluza-Klein (KK) level can be made stable by imposing a Z2 parity. We consider a framework where the lightest KK particle (LKP) is a neutral, extremely weakly interacting particle such as the first KK excitation of the graviton, while the next-to-lightest KK particle (NLKP) is the first KK mode of a charged right-handed lepton. In such a scenario, due to its very small couplings to the LKP, the NLKP is long-lived. We investigate the production of these particles from the interaction of high energy neutrinos with nucleons in the Earth, and determine the rate of NLKP events in neutrino telescopes. Using the Waxman-Bahcall limit for the neutrino flux, we find that the rate can be as large as a few hundreds events a year for realistic values of the NLKP mass.

8 pages, 8 figures

References in corpus (9)

• Exotic Collider Signals from the Complete Phase Diagram of Minimal Universal Extra Dimensions
• Direct Detection of Supersymmetric Particles in Neutrino Telescopes
• Long-Lived Staus at Neutrino Telescopes
• Solving cosmological problem in universal extra dimension models by introducing Dirac neutrino
• Relic abundance of dark matter in universal extra dimension models with right-handed neutrinos
• Probing new physics with long-lived charged particles produced by atmospheric and astrophysical neutrinos
• Long-lived Staus from Cosmic Rays
• Weak interactions of supersymmetric staus at high energies
• Cosmogenic neutrinos and quasi-stable supersymmetric particle production