Radion production in gamma-electron collisions

TL;DR

This paper explores the potential of gamma-electron colliders to detect the radion, a scalar field from the Randall-Sundrum model, by calculating production cross sections and assessing observability at future high-energy colliders.

Contribution

It provides detailed calculations of radion production in gamma-electron collisions, highlighting the conditions under which the radion can be observed in future colliders.

Findings

Radion production cross section can be significant for GeV-scale masses.

Polarized electron beams enhance radion detection prospects.

Observable signals are possible at future high-energy gamma-e colliders.

Abstract

We analyze the potential of Compact Linear Colliders based on the \gamma-e collisions to search for the radion in the Randall-Sundrum model, where compactification radius of the extra dimension is stabilized by the radion, which is a scalar field lighter than the graviton Kaluza-Klein states. The radion production in the high energy \gamma-e colliders with the polarization of the electron beams are calculated in detail. Numerical evaluation shows that if the radion mass is not too heavy with the mass order of GeV then the reaction can give observable cross section in future colliders at the high degree of polarization.