Indirect probes of superymmetry breaking with meutrino telescopes

Author(s)

Jairo Cavalcante de Souza

• Document type: Doctoral Thesis
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Instituto de Física (IF/SBI)
• Defense date: 2012-04-20

Examining board members

Ivone Freire da Mota e Albuquerque; Philippe Gouffon; Ernesto Kemp; Arthur Kos Antunes Maciel; Marina Nielsen

• Advisor: Ivone Freire da Mota e Albuquerque

Abstract

The main goal of this research is to propose probes of aspects of the minimal supersymmetric standard model (MSSM), assuming gauge mediated supersymmetry breaking scenarios. More specifically, how to determine limits for the supersymmetry breaking energy scale and ways for indirect detection of supersymmetric particles. We propose tests to be carried out both by neutrino telescopes as well as by atmospheric uorescence. Under these scenarios, supersymmetric particles originate from ultrahigh energy cosmological neutrinos interacting with nucleons inside the Earth. Through Monte Carlo simulations, we determine the signatures will be left in these telescopes. The indirect detection of these particles is based in their decay, which can occur inside the Earth or at the atmosphere, producing a tau plus a gravitino. Here we propose how to probe these scenarios, either by detecting taus, generated in the decay, in neutrino telescopes or in atmospheric uorescence telescopes. As these decays are connected to a restrict window for the supersymmetry breaking energy scale, which would be between ~105 GeV and ~107 GeV, we are proposing not only ways of detecting supersymmetric particles as well as how to probe the supersymmetry breaking energy scale in the scenarios considered. We show here that it is possible to observe these signals in two setups evaluated. (AU)

• FAPESP's process: 09/10327-1 - Testing Aspects of the Supersymmetric Model through Neutrinos Telescopes
• Grantee: Jairo Cavalcante de Souza
• Support Opportunities: Scholarships in Brazil - Doctorate