Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Abstract

In this article we propose a simultaneous collider search strategy for a pair of scalar bosons in the NMSSM through the decays of a very light pseudoscalar. The massive scalar has a mass around 126 GeV while the lighter one can have a mass in the vicinity of 98 GeV (thus explaining an apparent LEP excess) or be much lighter. The successive decay of this scalar pair into two light pseudoscalars, followed by leptonic pseudoscalar decays, produces clean multi-lepton final states with small or no missing energy. Furthermore, this analysis offers an alternate leptonic probe for the 126 GeV scalar that can be comparable with the ZZ* search channel. We emphasize that a dedicated experimental search for multi-lepton final states can be an useful probe for this scenario and, in general, for the NMSSM Higgs sector. We illustrate our analysis with two representative benchmark points and show how the LHC configuration with 8 TeV center-of-mass energy and 25 inverse femtobarns of integrated luminosity can start testing this scenario, providing a good determination of the light pseudoscalar mass and a relatively good estimation of the lightest scalar mass.

24 pages, 3 figures. Improved analysis. Final version to appear in JHEP

References in corpus (23)

• PYTHIA 6.4 Physics and Manual
• Herwig++ Physics and Manual
• Dark Matter Results from 225 Live Days of XENON100 Data
• micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• NMSPEC: A Fortran code for the sparticle and Higgs masses in the NMSSM with GUT scale boundary conditions
• Natural NMSSM Higgs Bosons
• MSSM Interpretations of the LHC Discovery: Light or Heavy Higgs?
• Analysis of the parameter space and spectrum of the $\mu \nu$SSM
• Updated Constraints from B Physics on the MSSM and the NMSSM
• Higgs Bosons at 98 and 125 GeV at LEP and the LHC
• LHC phenomenology of the $\mu \nu$SSM
• Role of h --> eta eta in Intermediate-Mass Higgs Boson Searches at the Large Hadron Collider
• Enhanced $h\to \gamma \gamma$ rate in MSSM singlet extensions
• Reinstating the 'no-lose' theorem for NMSSM Higgs discovery at the LHC
• Higgs Signal for h to aa at Hadron Colliders
• Visible Cascade Higgs Decays to Four Photons at Hadron Colliders
• Higgs mixing and diphoton rate enhancement in NMSSM models
• Enhanced diphoton rates at Fermi and the LHC
• The apparent excess in the Higgs to di-photon rate at the LHC: New Physics or QCD uncertainties?
• Another step towards a no-lose theorem for NMSSM Higgs discovery at the LHC
• Peccei-Quinn NMSSM in the light of 125 GeV Higgs

Cited by in corpus (37)

• The diphoton signal of the light Higgs boson in Natural NMSSM
• A light Higgs scalar in the NMSSM confronted with the latest LHC Higgs data
• Discovery Prospects for NMSSM Higgs Bosons at the High-Energy Large Hadron Collider
• Low-Mass Higgs Bosons in the NMSSM and Their LHC Implications
• Light Higgs bosons in Two-Higgs-Doublet Models
• Search for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at sqrt(s) = 8 TeV
• Search for a light pseudoscalar Higgs boson in the boosted $\mu \mu \tau \tau$ final state in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Fits to the Fermi-LAT GeV excess with RH sneutrino dark matter: implications for direct and indirect dark matter searches and the LHC
• A light NMSSM pseudoscalar Higgs boson at the LHC redux
• Pair production of a 125 GeV Higgs boson in MSSM and NMSSM at the ILC
• The semi-constrained NMSSM satisfying bounds from the LHC, LUX and Planck
• Probing the $\mu \nu$SSM with light scalars, pseudoscalars and neutralinos from the decay of a SM-like Higgs boson at the LHC
• Simultaneous enhancement in gamma.gamma, b.b-bar and tau+.tau- rates in the NMSSM with nearly degenerate scalar and pseudoscalar Higgs bosons
• Decays of a NMSSM CP-odd Higgs in the low-mass region
• Collider signatures of a light NMSSM pseudoscalar in neutralino decays in the light of LHC results
• Implications of 98 GeV and 125 GeV Higgs scenario in non-decoupling SUSY with updated ATLAS, CMS and PLANCK data
• 125 GeV Higgs Boson signal within the complex NMSSM
• NMSSM interpretations of the observed Higgs signal
• Diphoton Signal of light pseudoscalar in NMSSM at the LHC
• Light Higgsino Decays as a Probe of the NMSSM
• Uncovering light scalars with exotic Higgs decays to bbmumu
• Investigating light NMSSM pseudoscalar states with boosted ditau tagging
• Detection prospects of light NMSSM Higgs pseudoscalar via cascades of heavier scalars from vector boson fusion and Higgs-strahlung
• Current bounds and future prospects of light neutralino dark matter in NMSSM
• On-Shell neutral Higgs bosons in the NMSSM with complex parameters
• Probing the NMSSM via Higgs boson signatures from stop cascade decays at the LHC
• Highlights of Supersymmetric Hypercharge $\pm 1$ Triplets
• Higgs Mixing in the NMSSM and Light Higgsinos
• Next-to-Leading Order NMSSM Decays with CP-odd Higgs Bosons and Stops
• Hunting physics beyond the standard model with unusual $W^{\pm }$ and $Z$ decays
• Phenomenology of NMSSM in TeV scale mirage mediation
• Dominant production of heavier Higgs bosons through vector boson fusion in NMSSM
• Invisible decays of low mass Higgs bosons in supersymmetric models
• Status of the 98 - 125 GeV Higgs scenario with updated LHC-8 data
• LHC signals of the next-to-lightest scalar Higgs state of the NMSSM in the $4\tau$ decay channel
• Fermionic decays of NMSSM Higgs bosons under LHC 13 TeV constraints
• Status of ${\mathbb{Z}}_3$-NMSSM featuring a light bino-dominated LSP and a light singlet-like scalar under the LZ Experiment