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

By M. Gouzevitch, A. Oliveira, J. Rojo, R. Rosenfeld, G. Salam and V. Sanz

Abstract

38 pages, 17 figuresWe 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 $b\bar{b}$ 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

Topics: [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
Publisher: Springer
Year: 2013
DOI identifier: 10.1007/JHEP07(2013)148
OAI identifier: oai:HAL:in2p3-00805469v1
Provided by: Hal-Diderot
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