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Special EPE Seminar: Matthew Low
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US/Pacific
42/R-032 (CERN)
Description
Title: Entanglement and Bell Inequality Violation at the LHC in Top-Anti-Top Events
Abstract: Quantum entanglement is a fundamental property of quantum mechanics. Recently, studies have explored entanglement in the top-anti-top system at the Large Hadron Collider (LHC) when both the top quark and anti-top quark decay leptonically. Entanglement is detected via correlations between the polarizations of the top and anti-top and these polarizations are measured through the angles of the decay products of the top and anti-top. In this talk, I propose searching for evidence of quantum entanglement in the semi-leptonic decay channel where the final state includes one lepton, one neutrino, two b-flavor tagged jets, and two light jets from the W decay. This channel is both easier to reconstruct and has a larger effective quantity of data than the fully leptonic channel. As a result, the semi-leptonic channel is 60% more sensitive to quantum entanglement and a factor of 3 more sensitive to Bell inequality violation, compared to the leptonic channel.
Bio: Matthew Low is a Postdoctoral Associate in the Physics & Astronomy Department University of Pittsburgh. He studies beyond the Standard Model physics using colliders and cosmology. Recently, his interests include using colliders as a laboratory for studying quantum information and looking for signals of naturalness in cosmological data.
