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Search for dark matter recoiling from pencil-thin jets using CMS data with machine learning techniques
Date: Wednesday, May 7th
Time: 10:00 am - 12:00 pm
Place: 5280 CH
Speaker: Abhishikth Mallampalli, Physics PhD student
Abstract: The Standard Model (SM) of particle physics serves as the foundational framework describing the fundamental particles and forces that govern the behavior of matter and radiation in the universe, excluding gravity. It provides a comprehensive theory of the electromagnetic, weak, and strong nuclear interactions—three of the four fundamental forces of nature. Despite its incredible success in explaining a vast range of experimental phenomena, it is still incomplete and there are several open questions. This thesis attempts to answer some of these open questions in physics today.

Several new physics models predict particles that are expected to leave signatures of missing transverse momentum in collider experiments. One of the primary motivations for such searches is the astrophysical evidence for dark matter, including galactic rotation curves, gravitational lensing, and observations of the cosmic microwave background. Weakly Interacting Massive Particles (WIMPs) are a leading candidate for dark matter, and this thesis explores the parameter space of two WIMP-inspired models, setting stringent limits on their viability. In addition, searches for extra spacetime dimensions, leptoquarks, and quantum blackholes are also performed. Machine learning techniques are used for these searches.

This thesis also presents an algorithm to mitigate beam-induced background in a future muon collider using fast machine learning
Host: Sridhara Dasu
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