Associated production of a light pseudoscalar Higgs boson with a chargino pair in the NMSSM

Abstract

In the next-to-minimal supersymmetric standard model (NMSSM), the unique $\lambda S{H}_u{H}_d$ in the superpotential gives rise to a coupling involving the lighter pseudoscalar Higgs boson and a pair of charged or neutral Higgsinos, even in the limit of zero mixing between the two pseudoscalar Higgs bosons. We study the associated production of a very light pseudoscalar Higgs boson with a pair of charginos. The novel signature involves a pair of charged leptons from chargino decays and a pair of photons from the pseudoscalar Higgs boson decay, plus large missing energy at the LHC and ILC. The signal may help us to distinguish the NMSSM from MSSM, provided that the experiment can resolve the two photons from the decay of the pseudoscalar Higgs boson.

Revtex4, 13 pages including 4 figures. Improved analysis including the opening angle distribution between the two photons from A1 decay

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• Probing NMSSM Scenarios with Minimal Fine-Tuning by Searching for Decays of the Upsilon to a Light CP-Odd Higgs Boson
• Role of h --> eta eta in Intermediate-Mass Higgs Boson Searches at the Large Hadron Collider
• Recoil Detection of the Lightest Neutralino in MSSM Singlet Extensions
• Radiative Yukawa Couplings for Supersymmetric Higgs Singlets at Large tan(beta)
• Diphoton Signal of light pseudoscalar in NMSSM at the LHC
• Light Higgsino Decays as a Probe of the NMSSM
• Supersymmetric Higgs Singlet Effects on B-Meson FCNC Observables at Large tan(beta)
• Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models
• Light Pseudoscalar Higgs boson in Neutralino Decays in the Next-to-Minimal Supersymmetric Standard Model
• ${\rm Y}\to \gamma A_1$ in the NMSSM at large tan beta
• Charged Higgs bosons in the Next-to MSSM (NMSSM)
• Implications of a New Light Scalar Near the Bottomonium Regime
• Rare Decays with a Light CP-Odd Higgs Boson in the NMSSM
• Discovery potential of the NMSSM CP-odd Higgs at the LHC
• Detection prospects of light pseudoscalar Higgs boson at the LHC
• Review of a light NMSSM pseudoscalar Higgs state production at the LHC