Title
Long-lived charginos in the focus-point region of the MSSM parameter space
Date Issued
30 November 2009
Access level
open access
Resource Type
research article
Author(s)
Publisher(s)
Institute of Physics Publishing
Abstract
We analyse the possibility of getting light long-lived charginos within the framework of the MSSM with gravity mediated SUSY breaking. This possibility can be realized in the so-called focus-point region of the parameter space. The mass degeneracy of higgsino-like chargino and two higgsino-like neutralinos is the necessary condition for a long lifetime. It requires the fine-tuning of parameters, but being a single additional constraint in the whole parameter space it can be fulfilled in the constrained MSSM along the border line where radiative electroweak symmetry breaking fails. In a narrow band close to the border line the charginos are long-lived particles. The cross-sections of their production and co-production at the LHC via electroweak interaction reach a few tenths of a pb. © 2009 IOP Publishing Ltd.
Volume
36
Issue
12
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Subjects
Scopus EID
2-s2.0-70450227691
Source
Journal of Physics G: Nuclear and Particle Physics
Resource of which it is part
Journal of Physics G: Nuclear and Particle Physics
ISSN of the container
09543899
Sources of information:
Directorio de Producción Científica
Scopus