Discrimination of SUSY breaking models using single-photon processes at future e+e- linear colliders

TL;DR

This study explores how single-photon processes at future e+e- linear colliders can distinguish between different supersymmetry breaking models, using polarized beams and statistical analysis to identify observable differences.

Contribution

It demonstrates that polarized beam measurements can effectively differentiate between minimal supergravity and gaugino mediation models at future colliders.

Findings

Single-photon event differences exceed three times the statistical error after years of data collection.

Polarized beams enhance the ability to distinguish supersymmetry breaking models.

Results are applicable to the future International Linear Collider operations.

Abstract

We examine the single-photon processes in the frame work of supersymmetric models at future e+e- linear colliders. According to the recent experimental achievement, the optimistic polarization degrees for both electron and positron beams are taken into account to enhance the signal-to-noise ratio revealing the observable difference between supersymmetry breaking models. The minimal supergravity model and the minimal SU(5) grand unified model in gaugino mediation have been examined as examples. We see that after several years of accummulating data, the difference of the number of single-photon events between the two models received from the collider would be in excess of three times the statistical error, providing us the possibility to probe which model would be realized in nature. The result is well suitable for the future running of the International Linear Collider.