Mass Measurement of the Decaying Bino at the LHC

TL;DR

This paper proposes a method to measure the Bino mass at the LHC by identifying short charged tracks from charged-Wino production, especially within the anomaly-mediated SUSY-breaking model, aiding in testing this SUSY scenario.

Contribution

It introduces a novel approach to determine the Bino mass through charged track detection, focusing on AMSB models with accessible gauginos at the LHC.

Findings

Bino mass measurement is feasible via short charged track detection.

Implications for testing the AMSB SUSY model at the LHC.

Enhanced understanding of gaugino mass spectrum in SUSY models.

Abstract

In some class of supersymmetric (SUSY) models, the neutral Wino becomes the lightest superparticle and the Bino decays into the Wino and standard-model particles. In such models, we show that the measurement of the Bino mass is possible if the short charged tracks (with the length of O(10 cm)) can be identified as a signal of the charged-Wino production. We pay particular attention to the anomaly-mediated SUSY-breaking (AMSB) model with a generic form of K\"ahler potential, in which only the gauginos are kinematically accessible superparticles to the LHC, and discuss the implication of the Bino mass measurement for the test of the AMSB model.