Unparticle effects on cosmic ray photon and $e^\pm$

TL;DR

This paper investigates how unparticle physics influences cosmic ray photon and electron/positron interactions, finding that unparticles do not significantly alter these processes despite some theoretical enhancements in elastic scattering.

Contribution

It provides a detailed calculation of unparticle effects on cosmic ray interactions, showing minimal impact on observable processes.

Findings

Unparticle effects do not significantly change cosmic ray photon and $e^ ext{±}$ interactions.

Elastic scattering via unparticles can surpass pair production in certain parameter regions.

The study offers quantitative amplitudes for relevant cosmic ray processes with unparticle contributions.

Abstract

We study the effects of unparticle physics on the cosmic ray photon and $e^\pm$, including on the pair production (PP) and elastic scattering (ES) of cosmic ray photon off various background radiations, and on the inverse Compton scattering of cosmic ray $e^\pm$ with cosmic radiations. We compute the spin-averaged amplitudes squared of three processes and find that the advent of unparticle will never significantly change the interactions of cosmic ray photon and $e^\pm$ with various background radiations, although the available papers show that ES which occurs in the tree-level through unparticle exchanges will easily surpass PP in the approximate parameter regions.