MSSM Higgs boson searches at the LHC: benchmark scenarios for Run 2 and beyond

Bagnaschi, Emanuele; Bahl, Henning; Fuchs, Elina; Hahn, Thomas; Heinemeyer, S.; Liebler, Stefan; Patel, Shruti; Slavich, Pietro; Stefaniak, Tim; Wagner, Carlos E. M.; Weiglein, G.

doi:10.1140/epjc/s10052-019-7114-8

Cited by 86 publications

(150 citation statements)

References 207 publications

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“…The m mod+ h [80] and hMSSM [81][82][83][84] benchmark scenarios are defined by setting these parameters such that a wide range of the m A -tan β parameter space is compatible with the h(125) mass and production rate measurements at ATLAS and CMS. For the M 125 h , M 125 h (alignment), M 125 h ( χ), and M 125 h ( τ ) benchmark scenarios, a significant portion of the parameter space is consistent with the h(125) measurements and with limits from searches for supersymmetry particles and additional Higgs bosons at ATLAS and CMS using pp collisions at √ s = 7, 8, and 13 TeV [85]. The assumption of a SM width is a reasonable approximation for the MSSM scenarios considered, with relatively small widths predicted with respect to the experimental resolution for the majority of the phase space explored.…”

Section: Signal Modelssupporting

confidence: 60%

Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

Sirunyan

Tumasyan

Adam

et al. 2020

J. High Energ. Phys.

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A search for a heavy Higgs boson in the mass range from 0.2 to 3.0 TeV, decaying to a pair of W bosons, is presented. The analysis is based on proton-proton collisions at √ s = 13 TeV recorded by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb −1 . The W boson pair decays are reconstructed in the 2 2ν and ν2q final states (with = e or µ). Both gluon fusion and vector boson fusion production of the signal are considered. Interference effects between the signal and background are also taken into account. The observed data are consistent with the standard model (SM) expectation. Combined upper limits at 95% confidence level on the product of the cross section and branching fraction exclude a heavy Higgs boson with SM-like couplings and decays up to 1870 GeV. Exclusion limits are also set in the context of a number of two-Higgs-doublet model formulations, further reducing the allowed parameter space for SM extensions.

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Section: Signal Modelssupporting

confidence: 60%

Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

Sirunyan

Tumasyan

Adam

et al. 2020

J. High Energ. Phys.

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show abstract

“…Beyond tree level, the Higgs sector is affected by additional parameters, the choice of which defines various MSSM benchmark scenarios. In the M 125 h scenario [17], the parameters are such that the mass of the lightest CP-even Higgs boson, m h , is close to the measured mass of the Higgs boson discovered at the LHC [18] and the masses of all superparticles are heavy enough to only mildly affect the production and decays of the MSSM Higgs bosons. The couplings of the MSSM heavy Higgs bosons to down-type fermions are enhanced with respect to the SM for large tan β values, resulting in increased branching fractions to τ leptons and b quarks, as well as a higher cross section for Higgs boson production in association with b quarks (bbH).…”

mentioning

confidence: 86%

Search for Heavy Higgs Bosons Decaying into Two Tau Leptons with the ATLAS Detector Using pp Collisions at s=13 TeV

Aad¹,

Abbott²,

Abbott³

et al. 2020

Phys. Rev. Lett.

173

169

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“…Therefore, the only region that is currently constrained is for low values of tan β < 2 and values of the heavy Higgs mass below about 350 GeV, where the top-quark decay process is absent. The main constraint comes from the decay of the heavy Higgs bosons into τ pairs [71,72] which, however, can be efficiently suppressed if the electroweakinos are light [73].…”

Section: Fat Higgs Modelsmentioning

confidence: 99%

Dynamical Higgs field alignment in the NMSSM

Coyle

Wagner

2020

Phys. Rev. D

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Experimental probes of the recently discovered Higgs boson show that its behavior is close to that of the Standard Model (SM) Higgs particle. Extensions of the SM which include extra Higgs bosons are constrained by these observations, implying either the decoupling of the heavy non-standard Higgs particles or the realization of alignment, associated with vanishing mixing of the SM-like Higgs boson with the non-standard ones. Quite generally, alignment is not enforced by symmetry considerations and hence it is interesting to look for dynamical ways in which this condition can be realized. We show that this is possible in the Next-to-Minimal Supersymmetric Standard Model (NMSSM), in which alignment is achieved for values of the coupling of the Higgs fields to the singlet field that become large close to the Grand Unification (GUT) scale. This, in turn, can be explained by the composite nature of the Higgs fields, with a compositeness scale close to the GUT scale. In this article we present this dynamical scenario and discuss its phenomenological properties.This paper is structured as follows. In Section II, we review the alignment limit of the NMSSM and the relevant conditions on the parameters necessary for alignment. In Section III, we present results from the running of the NMSSM parameters and examine the range of GUT-scale parameter values for which alignment is obtained in the doublet and singlet sectors. We then present an implementation of a Fat Higgs theory which runs down to alignment at the weak scale in Section IV. In Section V, we examine the bottom-and tau-Yukawa unification for our set of low-energy parameters. Finally, in Section VI we present our conclusions. II. THE ALIGNMENT LIMIT OF THE NMSSMWithin the NMSSM Higgs sector, which contains two doublets and a singlet, there are two methods through which one may obtain a SM-like Higgs of 125 GeV: decoupling and alignment. In the decoupling case, the heavier non-standard Higgs bosons are pushed to high masses, such that the mixing with the SM-like Higgs boson is suppressed. In the case of alignment, the parameters of the Higgs sector are such that the mixing terms of the squared-mass matrix between the SM-like Higgs boson and the neutral, non-SM-like one and singlet are small. More specifically, if we work in the Higgs basis [16,17] in which only one of the doublets acquires a vacuum expectation value and hence is aligned with the SM Higgs doublet, here denoted by the subscript 1, the symmetric CP-even Higgs mass-squared matrix is given generally by M 2 =      M 2 11 M 2 12 M 2 13 M 2 22

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MSSM Higgs boson searches at the LHC: benchmark scenarios for Run 2 and beyond

Cited by 86 publications

References 207 publications

Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

Search for Heavy Higgs Bosons Decaying into Two Tau Leptons with the ATLAS Detector Using pp Collisions at s=13 TeV

Dynamical Higgs field alignment in the NMSSM

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