Muon signals of very light<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>-odd Higgs states of the NMSSM at the LHC

Almarashi, M.M.; Moretti, Stefano

doi:10.1103/physrevd.83.035023

Cited by 27 publications

(31 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, since tau decays are always accompanied by neutrinos, there is no sharp peak of a 0 1 invariant mass. For these reasons, as discussed in the literature, 4µ [39,44,45], 4γ [21,33] or 2γ + 2-jets [46] search channels with m a 0 1 < 2m τ turn out to be the ideal way to probe NMSSM Higgses with very light pseudoscalars.…”

Section: Introductionmentioning

confidence: 99%

“…Although these cascades are generally suppressed, a substantial enhancement can occur when particles are light and therefore induce distinctive signatures. 1 For example, if the lightest pseudoscalar, denoted as a 0 1 , has a mass m a 0 1 > ∼ 2m b , the process h 0 1 → 2a 0 1 → 2bb with 4b final states is dominant [22,[36][37][38][39][40]. This seems a good channel for collider study, 2 however, in hadron colliders like the LHC this signature is hidden by a huge QCD background.…”

Section: Introductionmentioning

confidence: 99%

“…This seems a good channel for collider study, 2 however, in hadron colliders like the LHC this signature is hidden by a huge QCD background. A viable alternative is looking for 4τ [20,22,25,31,35,39,41,42] or 2µ2τ [42] final states, for which the problem of large QCD backgrounds is somehow ameliorated. However, this approach suffers from the poor tau-identification efficiency, dependent on the transverse momentum [43].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Cerdeño

Ghosh

Park

2013

J. High Energ. Phys.

View full text Add to dashboard Cite

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. *

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Cerdeño

Ghosh

Park

2013

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Also, previous theoretical studies in the context of the NMSSM have investigated the potential for the LHC to probe light pseudoscalars with somewhat similar searches [83][84][85][86][87][88]. However, these investigations did not incorporate trigger and detector effects, and did not analyze the effects of cuts on the signal and backgrounds in detail, which is a major component of this work and crucial for obtaining an observable signal.…”

Section: Jhep04(2015)046mentioning

confidence: 99%

Extending LHC coverage to light pseudoscalar mediators and coy dark sectors

Kozaczuk

Martin

2015

J. High Energ. Phys.

View full text Add to dashboard Cite

Many dark matter models involving weakly interacting massive particles (WIMPs) feature new, relatively light pseudoscalars that mediate dark matter pair annihilation into Standard Model fermions. In particular, simple models of this type can explain the gamma ray excess originating in the Galactic Center as observed by the Fermi Large Area Telescope. In many cases the pseudoscalar's branching ratio into WIMPs is suppressed, making these states challenging to detect at colliders through standard dark matter searches. Here, we study the prospects for observing these light mediator states at the LHC without exploiting missing energy techniques. While existing searches effectively probe pseudoscalars with masses between 5-14 GeV and above 90 GeV, the LHC reach can be extended to cover much of the interesting parameter space in the intermediate 20-80 GeV mass range in which the mediator can have appreciable Yukawa-like couplings to Standard Model fermions but would have escaped detection by LEP and other experiments. Models explaining the Galactic Center excess via a light pseudoscalar mediator can give rise to a promising signal in this regime through the associated production of the mediator with bottom quarks while satisfying all other existing constraints. We perform an analysis of the backgrounds and trigger efficiencies, detailing the cuts that can be used to extract the signal. A significant portion of the otherwise unconstrained parameter space of these models can be conclusively tested at the 13 TeV LHC with 100 fb −1 , and we encourage the ATLAS and CMS collaborations to extend their existing searches to this mass range.

show abstract

“…The following parameters have no fixed values and also they have no predictions from the model and their value is unknown in the experiment [20,21]:…”

Section: Theoretical Aspects Of Constrains For Physical Properties Ofmentioning

confidence: 99%

The NMSSM dark sector constraints

Gurskaya

Dolgopolov

2017

EPJ Web Conf.

View full text Add to dashboard Cite

Abstract. In this paper authors present review of neutralino research results in LHC, cosmological observations and theoretical models. Nowdays there are constraints on the mass of dark matter particle from experiments. The neutralino as a candidate for the dark matter particle in the framework of supersymmetry is considered. There are some discuss advantages for it about the NMSSM model. The properties of neutralino are functions of free parameters of the model. In agreement with the foregoing, constraints on free parameters of the NMSSN are determined.

show abstract

Muon signals of very lightCP-odd Higgs states of the NMSSM at the LHC

Abstract: We study here the µ + µ − decay mode of a very light CP-odd Higgs boson of the NMSSM, a 1 , produced in association with a bottom-antibottom pair and find that, despite small event rates, a significant signal should be extractable from the SM background at the LHC with high luminosity.

Cited by 27 publications

References 30 publications

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

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

Extending LHC coverage to light pseudoscalar mediators and coy dark sectors

The NMSSM dark sector constraints

Contact Info

Product

Resources

About