Notes for Physics 752 (Prof. Agashe) – Spring 2020


    (1). Choice of Z1   getting rid of divergence in vertex function even for     

          fermions being off-shell (and photon momentum being non  



     (2). Proof (using Ward-Takahashi identity) of Z1 = Z2


     (3).  From Weinberg’s textbook on QFT: consideration as a candidate ground    

            state of a 50-50 superposition of the 2 “usual suspects” for ground states

            (for the case of real scalar mass^2 < 0, i.e., discrete symmetry), i.e.,     

            with positive/negative VEV for scalar field. 


(4). Pion-Nucleon system


The following are notes from post-Spring break online lectures:


(5). Non-abelian gauge theories: (a). classical and (b). quantum-levels


(6). Overview of SM theory


(7). Theory of EW sector of SM: (a). overview; (b). bosonic (separately, details of calculation of Z decay width) and (c) fermionic sectors


(8). EW sector phenomenology: no generational mixing (“non”-flavor): (a). overview; (b) details


(9). Flavor phenomenology: (a). overview and (b). observables


(10). QCD: (a). history and (b). theory/phenomenology overview


(11). QCD phenomenology (details of processes): (a). e+e- à all hadrons; (b). Deep Inelastic Scattering (separately, convenient form, specific to QED)

and (c). Hard scattering part of Hadron-hadron collisions (separately, convenient form, specific to Drell-Yan process)


(12). Beyond SM: (a). overview of selected topics and (b). (some) details of grand unified theories (GUT).