Measurements and Searches for New Physics with Boosted Top Quarks
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Many models of new physics predict new particles that have enhanced couplings to the third generation of the Standard Model (SM). Of these, certain models motivate the existence of new heavy resonances that decay to top quark anti-quark pairs, such as Z’ gauge bosons and Randall-Sundrum Kaluza Klein gluons. This analysis describes a search for heavy resonances in the top quark anti-quark pair production spectrum to test for the presence of different new physics models. The topology in which the hadronically decaying top decay products are fully merged into a single jet is considered. In addition, the first measurement from the CMS collaboration of the tt production cross section in the boosted regime and the phase 1 upgrade of the Forward Pixel Detector (FPIX) are briefly discussed.