Study of MSSM heavy Higgs bosons decaying into charginos and neutralinos

Barman, Rahool Kumar; Bhattacherjee, Biplob; Chakraborty, Amit; Choudhury, Arghya

doi:10.1103/physrevd.94.075013

Cited by 28 publications

(29 citation statements)

References 146 publications

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“…To this end, in this paper we propose new LHC search strategies to broadly cover scenarios where these weakly interacting supersymmetric particles are produced from the decays of the heavy Higgs bosons, and we analyze their reach at the high luminosity (HL)-LHC. (Previous studies for heavy Higgs bosons decaying to electroweak particles can be found in [6,[14][15][16][17][18][19][20][21][22][23][24][25][26][27], and in Refs. [13,[28][29][30][31][32] for Next-to-Minimal-Supersymmetric-Standard-Model studies.).…”

Section: Introductionmentioning

confidence: 99%

Heavy Higgs as a portal to the supersymmetric electroweak sector

Gori

Liu

Shakya

2019

J. High Energ. Phys.

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The electroweak sector of the Minimal Supersymmetric Standard Model (MSSM) -neutralinos, charginos and sleptons -remains relatively weakly constrained at the LHC due in part to the small production cross sections of these particles. In this paper, we study the prospects of searching for decays of heavy Higgs bosons into these superpartners at the high luminosity LHC. In addition to the kinematic handles offered by the presence of a resonant particle in the production chain, heavy Higgs decays can be the dominant production mode of these superpartners, making it possible to extend coverage to otherwise inaccessible regions of the supersymmetry and heavy Higgs parameter space. We illustrate our ideas with detailed collider analyses of two specific topologies: We propose search strategies for heavy Higgs decay to a pair of neutralinos, which can probe heavy Higgs bosons up to 1 TeV in the intermediate tan β(∼ 2 − 8) region, where standard heavy Higgs searches have no reach. Similarly, we show that targeted searches for heavy Higgs decays into staus can probe stau masses up to several hundred GeV. We also provide a general overview of additional decay channels that might be accessible at the high luminosity LHC. This motivates a broader program for LHC heavy Higgs searches.2 Note that there is also a recent ATLAS leptons plus / ET excess that can be related to new exotic decays of the heavy Higgs bosons [33][34][35].

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Section: Introductionmentioning

confidence: 99%

Heavy Higgs as a portal to the supersymmetric electroweak sector

Gori

Liu

Shakya

2019

J. High Energ. Phys.

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“…A complete list of the searches for additional Higgses considered by us is summarized in Table II and Table III where some channels are taken from Ref. [33]. References [34,35] showed that the LHC searches for the charged Higgs fail to constrain the model for m H AE > 500 GeV.…”

Section: B Theoretical and Experimental Constraintsmentioning

confidence: 99%

Light scalar dark matter extension of the type-II two-Higgs-doublet model

et al. 2018

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We examine the type-II two-Higgs-doublet model with a light scalar dark matter (S) after imposing the constraints from the Higgs searches at the LHC and dark matter experiments. We first assume that both CP-even Higgses (h and H) are portals between the dark matter and standard model (SM) sectors, and the CP-odd Higgs (A) and H are heavier than 130 GeV. We find that the dark matter with a mass of 10-50 GeV is disfavored by the joint constraints of the 125 GeV Higgs signal data, the relic density, XENON1T (2018), and Fermi-LAT. Next, we consider a special scenario in which the heavy CP-even Higgs is taken as the 125 GeV Higgs. The light CP-even Higgs is the only portal between the dark matter and SM sectors, and the dark matter mass is slightly below the Higgs resonance. We find that the signal data of the 125 GeV Higgs restrict tan β to be in the range of 1-1.5 for m h < 62 GeV. The gg → A → hZ and bb → h → τ þ τ − channels at the LHC can impose lower limits and upper limits on tan β, respectively. For appropriate values of tan β, λ h , and m h , the dark matter with a mass of 10-50 GeV is allowed by the constraints of the Higgs searches at the LHC and dark matter experiments. For example, tan β is restricted to be in the range of 1.0-1.5 for 10 GeV < m s < 28 GeV, and m h 2m S > 1.12 is excluded for 30 GeV < m S < 50 GeV.

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“…Our phenomenological analyses [44,45] using ATLAS Run I data relaxed some of the above assumptions and showed that the constraints could be significantly weaker. However, all the above and several other recent phenomenological studies [46][47][48][49][50][51] invoked an adhoc 1 However co-annihilation of strongly interacting sparticles with the LSP may produce the observed DM in the universe [26,27].…”

Section: Introductionmentioning

confidence: 91%

Multilepton signals of heavier electroweakinos at the LHC

Chakraborti¹,

Datta

Ganguly

et al. 2017

J. High Energ. Phys.

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As a sequel to our recent paper we examine the phenomenology of the full electroweakino sector of the pMSSM without invoking the ad hoc but often employed assumption that the heavier ones are decoupled. We showcase the importance of the heavier electroweakinos using several generic models with different hierarchies among the slepton and electroweakino masses. We obtain constraints from the LHC 3l + / E T data which are stronger than that for decoupled heavier electroweakinos. Using the additional constraints from the observed dark matter relic density of the universe and the precisely measured anomalous magnetic moment of the muon we determine the allowed parameter space. We then show that novel ml + / E T signatures with m > 3 may be observed before the next long shut down of the LHC.

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Study of MSSM heavy Higgs bosons decaying into charginos and neutralinos

Cited by 28 publications

References 146 publications

Heavy Higgs as a portal to the supersymmetric electroweak sector

Heavy Higgs as a portal to the supersymmetric electroweak sector

Light scalar dark matter extension of the type-II two-Higgs-doublet model

Multilepton signals of heavier electroweakinos at the LHC

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