Study of Anomalous Couplings between Quárticos Gauge Bosons at Future Accelerators.

Author(s)

José Kenichi Mizukoshi

• Document type: Doctoral Thesis
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Instituto de Física (IF/SBI)
• Defense date: 1999-03-05

Examining board members

Oscar Jose Pinto Eboli; Erasmo Madureira Ferreira; Yogiro Hama; Fernando Silveira Navarra; Alberto Franco de Sá Santoro

• Advisor: Oscar Jose Pinto Eboli

Abstract

We present a study of electroweak symmetry breaking sector in the framework or chiral Lagrangians, analyzing the operators that lead to genuine quartic gauge boson couplings, which could be probed by the next generation accelerators; LHC and NLC. In order to get bounds on the anomalous couplings related to these operators, we studied the reactions e+e- W+W-Z and e+e- ZZZ at the NLC operating with center-or-mass energy of s = 0.5 TeV and 1 TeV, extending our analysis to polarized electron beam collisions. We also estimate the impact of these couplings to the process pp VV + 2 jets (V = W±, Z) at the LHC. In order to develop realistic calculations, all the scattering amplitudes considered have been determined without any kind of approximation. (AU)