Fermion masses and Higgs physics in grand unified theories [Elektronische Ressource] / submitted by Abdul Aziz Bhatti

Fermion masses and Higgs Physics in Grand Unified Theories Abdul Aziz Bhatti Munich 2010 Fermion masses and Higgs Physics in Grand Unified Theories Abdul Aziz Bhatti Ludwig-Maximilians-Universität München Faculty of Physics Thesis submitted By Abdul Aziz Bhatti from Sheikhupura/Pakistan Munich February 5, 2010 First Supervisor: Prof. Dr. Harald Fritzsch Second Supervisor: Prof. Dr. Ivo Sachs Date of Examination: March 12, 2010 This thesis is dedicated to my wonderful father Mian Chiragh-ud-Din who is in the heaven and to my loving mother Sughra Chiragh who is back in Pakistan praying for me and whom I miss alot here in Germany Abstract The Standard model of particle physics is a very successful theory of strong weak and electromagnetic interactions. This theory is perturbative at sufficiently high energies and renormalizable thus it describes these interactions at quantum level. However it has a number of limitations, one being the fact that it has 28 free parameters assuming massive neutrinos. Within the Standard model these parameters can not be explained, however they can be accommodated in the standard theory.