Higgs production in neutralino decays in the MSSM

A. Arbey; M. Battaglia; F. Mahmoudi

doi:10.1140/epjc/s10052-015-3316-x

EPJ

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2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2015) 75: 108
https://doi.org/10.1140/epjc/s10052-015-3316-x

Regular Article - Theoretical Physics

The LHC and a future collider

A. Arbey¹^,2^,3, M. Battaglia³^,4^* and F. Mahmoudi¹^,2^,3

¹ Université Lyon 1, Centre de Recherche Astrophysique de Lyon, CNRS, UMR 5574, 69561, Saint-Genis Laval Cedex, France
² Ecole Normale Supérieure de Lyon, Lyon, France
³ CERN, 1211, Geneva 23, Switzerland
⁴ Santa Cruz Institute of Particle Physics, University of California, Santa Cruz, CA, 95064, USA

^* e-mail: MBattaglia@lbl.gov

Received: 15 December 2014
Accepted: 10 February 2015
Published online: 6 March 2015

Abstract

The search for the production of weakly interacting SUSY particles at the LHC is crucial for testing supersymmetry in relation to dark matter. Decays of neutralinos into Higgs bosons occur over some significant part of the SUSY parameter space and represent the most important source of $$h$$ boson production in SUSY decay chains in the MSSM. We study $$h$$ production in neutralino decays using scans of the phenomenological MSSM. Whilst in constrained MSSM scenarios the decay $\tilde{\chi }^{0}_{2} \rightarrow h \tilde{\chi }^{0}_{1}$ is the dominant channel, this does not hold in more general MSSM scenarios. On the other hand, the $\tilde{\chi }^0_{2,3} \rightarrow h \tilde{\chi }^{0}_{1}$ decays remain important and are highly complementary to multi-lepton final states in the LHC searches. The perspectives for the LHC analyses at 8 and 14 TeV as well as the reach of an $$e^+e^-$$ collider with $\sqrt{s} = 0.5, 1, 1.5$ and 3 TeV are discussed.