Left-right supersymmetry after the Higgs boson discovery

Mariana Frank, Dilip Kumar Ghosh, Katri Huitu, Santosh Kumar Rai, Ipsita Saha, and Harri Waltari
Phys. Rev. D 90, 115021 – Published 30 December 2014

Abstract

We perform a thorough analysis of the parameter space of the minimal left-right supersymmetric model in agreement with the LHC data. The model contains left- and right-handed fermionic doublets, two Higgs bidoublets, two Higgs triplet representations, and one singlet, insuring a charge-conserving vacuum. We impose the condition that the model complies with the experimental constraints on supersymmetric particles masses and on the doubly charged Higgs bosons and require that the parameter space of the model satisfies the LHC data on neutral Higgs signal strengths at 2σ. We choose benchmark scenarios by fixing some basic parameters and scanning over the rest. The lightest supersymmetric particle in our scenarios is always the lightest neutralino. We find that the signals for Hγγ and HVV are correlated, while Hbb¯ is anticorrelated with all of the other decay modes, and also that the contribution from singly charged scalars dominates that of the doubly charged scalars in Hγγ and HZγ loops, contrary to type II seesaw models. We also illustrate the range for mass spectrum of the LRSUSY model in light of planned measurements of the branching ratio of Hγγ to 10% level.

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  • Received 7 October 2014

DOI:https://doi.org/10.1103/PhysRevD.90.115021

© 2014 American Physical Society

Authors & Affiliations

Mariana Frank1,*, Dilip Kumar Ghosh2,†, Katri Huitu3,‡, Santosh Kumar Rai4,§, Ipsita Saha2,∥, and Harri Waltari3,¶

  • 1Department of Physics, Concordia University, 7141 Sherbrooke Street West, Montreal, Quebec, Canada H4B 1R6
  • 2Department of Theoretical Physics, Indian Association for the Cultivation of Science, 2A and 2B Raja Subodh Chandra Mullick Road, Kolkata 700 032, India
  • 3Department of Physics and Helsinki Institute of Physics, University of Helsinki, P.O. Box 64 (Gustaf Hällströmin katu 2), FIN-00014 Helsinki, Finland
  • 4Regional Centre for Accelerator-based Particle Physics, Harish-Chandra Research Institute, Chhatnag Road, Jhusi, Allahabad 211019, India

  • *mariana.frank@concordia.ca
  • tpdkg@iacs.res.in
  • katri.huitu@helsinki.fi
  • §skrai@hri.res.in
  • tpis@iacs.res.in
  • harri.waltari@helsinki.fi

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Issue

Vol. 90, Iss. 11 — 1 December 2014

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