The Search for The W' Boson Through its All-Hadronic Decay

In collaboration with the Oklahoma State University ATLAS group, I have been analyzing new kinematic cuts to purify theoretical W’ Boson signal. The W’ is a massive charged gauge boson that is predicted in a plethora of Standard Model Extensions – Little Higgs, Kaluza-Klein, Technicolor, and many more. The all-hadronic decay channel for the W’ leads to the creation of a regular sized bottom-quark-jet (b-candidates) and a large sized top-quark-jet (boosted top). The dominant background for W’ is Standard Model multijet production; where a significant fraction of b-jets originate from gluon splitting. Such jets have distinct properties that can be used to separate them from single-b-jets produced in W’ decays. Based on these properties, I developed a novel method that will help to improve the signal-to-background separation in the W’ search analysis.