Study of MSSM heavy Higgs bosons decaying into charginos and neutralinos

Rahool Kumar Barman, Biplob Bhattacherjee, Amit Chakraborty, and Arghya Choudhury
Phys. Rev. D 94, 075013 – Published 21 October 2016

Abstract

A multitude of searches have already been performed by the ATLAS and CMS collaborations at the LHC to probe the heavy Higgses of the minimal supersymmetric Standard Model (MSSM) through their decay to the Standard Model particles. In this paper, we study the decay of the MSSM heavy Higgses into neutralino and chargino pairs and estimate the maximum possible branching ratios for these “ino” modes being consistent with the present LHC data. After performing a random scan of the relevant electroweakino parameters, we impose the SM 125 GeV Higgs constraints and low-energy flavor data. We choose a few representative benchmark points satisfying all the above-mentioned constraints as well as the current bounds on heavy Higgses and electroweakinos from the LHC Run-I and Run-II data. We then perform a detailed collider simulation, including fast detector effects, and analyze all the potential SM backgrounds in order to estimate the discovery reach of these heavy Higgses at the LHC. We restrict ourselves within the leptonic cascade decay modes of these heavy Higgses and study the mono-X+ET (X=W, Z) and trilepton+ET signatures in the context of a high-luminosity run of the 14 TeV LHC.

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  • Received 22 July 2016

DOI:https://doi.org/10.1103/PhysRevD.94.075013

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Rahool Kumar Barman1,*, Biplob Bhattacherjee1,†, Amit Chakraborty2,‡, and Arghya Choudhury3,4,§

  • 1Centre for High Energy Physics, Indian Institute of Science, Bangalore 560012, India
  • 2Department of Theoretical Physics, Tata Institute of Fundamental Research, 1, Homi Bhabha Road, Mumbai 400005, India
  • 3Consortium for Fundamental Physics, Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
  • 4Consortium for Fundamental Physics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom

  • *rahoolkbarman@chep.iisc.ernet.in
  • biplob@chep.iisc.ernet.in
  • amit@theory.tifr.res.in
  • §a.choudhury@sheffield.ac.uk

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Vol. 94, Iss. 7 — 1 October 2016

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