Photons, neutrinos and large compact space dimensions

Abstract

We compute the contribution of Kaluza-Klein graviton exchange to the cross section for photon-neutrino scattering. Unlike the usual situation where the virtual graviton exchange represents a small correction to a leading order electroweak or strong amplitude, in this case the graviton contribution is of the same order as the electroweak amplitude, or somewhat larger. Inclusion of the graviton contribution is not sufficient to allow high energy neutrinos to scatter from relic neutrinos in processes such as $\nu \bar{\nu }\to \gamma \gamma$, but the photon-neutrino decoupling temperature is substantially reduced.

8 pages, 3 figures LaTeX. Typos corrected

References in corpus (9)

• The Hierarchy Problem and New Dimensions at a Millimeter
• String Theory Dynamics In Various Dimensions
• Heterotic and Type I String Dynamics from Eleven Dimensions
• Quantum Gravity and Extra Dimensions at High-Energy Colliders
• On Kaluza-Klein States from Large Extra Dimensions
• Collider Signatures of New Large Space Dimensions
• Diphoton signals for Low Scale Gravity in Extra Dimensions
• Photon neutrino scattering
• High energy photon-neutrino interactions

Cited by in corpus (7)

• Pair production with neutrinos and high-intensity laser fields
• High energy photon-neutrino elastic scattering
• Photons, neutrinos and optical activity
• Neutrino, Photon Interaction in Unparticle Physics
• The impact of excited neutrinos on $\nu \bar{\nu }\to \gamma \gamma$ process
• An estimate of the branching ratio for Z -> nu nubar gamma gamma
• The effect of electromagnetic properties of neutrinos on the photon-neutrino decoupling temperature