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Scale-invariant resonance tagging in multijet events and new physics in Higgs pair production

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Author(s):
Gouzevitch, Maxime ; Oliveira, Alexandra ; Rojo, Juan ; Rosenfeld, Rogerio ; Salam, Gavin P. ; Sanz, Veronica
Total Authors: 6
Document type: Journal article
Source: Journal of High Energy Physics; v. N/A, n. 7, p. 41-pg., 2013-07-01.
Abstract

We study resonant pair production of heavy particles in fully hadronic final states by means of jet substructure techniques. We propose a new resonance tagging strategy that smoothly interpolates between the highly boosted and fully resolved regimes, leading to uniform signal efficiencies and background rejection rates across a broad range of masses. Our method makes it possible to efficiently replace independent experimental searches, based on different final state topologies, with a single common analysis. As a case study, we apply our technique to pair production of Higgs bosons decaying into b (b) over bar pairs in generic New Physics scenarios. We adopt as benchmark models radion and massive KK graviton production in warped extra dimensions. We find that despite the overwhelming QCD background, the 4b final state has enough sensitivity to provide a complementary handle in searches for enhanced Higgs pair production at the LHC. (AU)

FAPESP's process: 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support Opportunities: Research Projects - Thematic Grants