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

Cerdeño, D.G.; Ghosh, P.; Park, C.B.

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 fb−1 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.

Citation

Cerdeño, D., Ghosh, P., & Park, C. (2013). Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar. Journal of High Energy Physics, 2013(6), Article 31. https://doi.org/10.1007/jhep06%282013%29031

• Journal Article Type: Article
• Acceptance Date: May 16, 2013
• Online Publication Date: Jun 10, 2013
• Publication Date: Jun 10, 2013
• Deposit Date: Nov 27, 2016
• Publicly Available Date: Dec 1, 2016
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2013
• Issue: 6
• Article Number: 31
• DOI: https://doi.org/10.1007/jhep06%282013%29031
• Public URL: https://durham-repository.worktribe.com/output/1400101
• Related Public URLs: https://arxiv.org/abs/1301.1325