Abstract
The increased center-of-mass energy of proton-proton collisions at the LHC allows for higher and higher mass scales to be probed in the search for new physics. These searches for new physics can often involve the reconstruction of top quark decays. In this high-mass regime, event topologies can change and top quark decay products become highly boosted, requiring the use of special identification algorithms. This report summarizes the latest techniques used in the reconstruction of boosted top quarks, and highlights several new physics searches from ATLAS and CMS where they are utilized. Such analyses include the search for top quark pair resonances as is expected from Z’ decays, as well as top quark partner searches, such as fourth generation vector-like quarks, excited top quarks, and top quark partners with non-standard charges
Highlights
The Large Hadron Collider (LHC) can truly be thought of as a top quark factory
With the completion of the running period in 2012, we have obtained an enormous data sample of top quarks. This sample allows the analysis of many independent decay channels and provides a robust understanding of top quark reconstruction at the LHC experiments. This provides a perfect final state to use in the search for new physics
This report has summarized many analyses searching for new physics involving top quark reconstruction in the final state, including ttresonances, and exotic top quark partners like T5/3 and t
Summary
With the completion of the running period in 2012, we have obtained an enormous data sample of top quarks This sample allows the analysis of many independent decay channels and provides a robust understanding of top quark reconstruction at the LHC experiments. This provides a perfect final state to use in the search for new physics. The unique event signatures provided by these models, which include b quark jets, boosted top quarks or vector bosons in the final state, can enhance the sensitivity of searches greatly These topologies can be reconstructed through the use of specialized algorithms to reconstruct highly-boosted top quark decays, where particles become extremely collimated and would fail to be reconstructed properly using standard techniques. These new techniques can push further the mass reach of searches for new physics
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