creator Duffty, Daniel advisor Sullivan, Zack Our understanding of the fundamental interactions of particles has come far in the last century, and is still pushing forward. As we build ever more powerful machines to probe higher and higher energies, we will need to develop new tools to not only understand the new physics objects we are trying to detect, but even to understand the environment that we are searching in. We examine methods of identifying both boosted objects and low energy jets which will be shrouded in a sea of noise from other pasts of the detector. We display the power of boosted-b tagging in a simulated W' search. We also examine the effetc of pile up on low energy jet reconstructions. For this purpose we develop a new priority-based jet algorithm, "p-jets", to cluster the energy that belongs together, but ignore the rest. Submitted by Erma Thomas (thomase@iit.edu) on 2015-10-19T21:38:54Z No. of bitstreams: 1 Thesis_Signed.pdf: 671223 bytes, checksum: 9be49de719c0526e62ec3aefd63f437e (MD5) Made available in DSpace on 2015-10-19T21:39:00Z (GMT). No. of bitstreams: 1 Thesis_Signed.pdf: 671223 bytes, checksum: 9be49de719c0526e62ec3aefd63f437e (MD5) Previous issue date: 2015-05 Ph.D in Physics, May 2015 2015 2015-05 http://hdl.handle.net/10560/3572 en Dissertation born digital application/pdf In Copyright http://rightsstatements.org/page/InC/1.0/ Restricted Access PHYS / Physics Illinois Institute of Technology Affiliated department