Production of long_lived charginos at the LHC

18th International Symposium on Particles Strings and Cosmology

Paucar, M.G.^1

Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, 01000 México, Mexico^1

关键词: Co-production;    Electroweak interactions;    Focus points;    Long lifetime;    Parameter spaces;    Production cross section;    Secondary vertices;    Supergravity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/485/1/012024/pdf
DOI  :  10.1088/1742-6596/485/1/012024

来源: IOP

【 摘 要 】

We performed a study on the probable existence of long-lived charginos in the focus point region of parameter space in the framework of the MSSM with supergravity inspired soft SUSY breaking. The mass degeneracy of higgsino-like chargino and two higgsino-like neutralinos is the necessary condition for a long lifetime. In this region the chargino are long lived and may go through the detector or produce a secondary vertex when they decay inside the detector. We analyze the production and co-production cross section of long-lived charginos at LHC via electroweak interaction and found that, for light long-lived charginos, the production cross section may reach a few percent of pb.