Quark-Gluon tagging with Shower Deconstruction: Unearthing dark matter and Higgs couplings
Danilo Ferreira de Lima, Petar Petrov, Davison Soper, Michael, Spannowsky
TL;DR
This paper introduces a simplified shower deconstruction method for quark-gluon tagging, improving jet classification and enhancing dark matter search sensitivity and Higgs production analysis.
Contribution
It presents a novel, simplified observable for quark-gluon discrimination, demonstrating its effectiveness across various jet definitions and applications in new physics searches.
Findings
Favorable performance compared to energy correlation functions.
Enhanced dark matter search sensitivity in mono-jet analyses.
Effective separation of weak boson and gluon-fusion Higgs production.
Abstract
The separation of quark and gluon initiated jets can be an important way to improve the sensitivity in searches for new physics or in measurements of Higgs boson properties. We present a simplified version of the shower deconstruction approach as a novel observable for quark-gluon tagging. Assuming topocluster-like objects as input, we compare our observable with energy correlation functions and find a favorable performance for a large variety of jet definitions. When applied to dark matter searches in mono-jet final states limitations from small signal-to-background ratios can be overcome. We also show that quark-gluon tagging is an alternative way of separating weak boson from gluon-fusion production in the process p + p -> H + jet + jet + X
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