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Aaboud, M.; Bergeås, Elin Kuutmann; Brenner, R.; Ekelöf, T.; Ellert, M.; Ferrari, A.; Gardin, Joakim; Alexa, C.; Öhman, H.; Pelikan, D.; Rangel-Smith, C.; Zwalinski, L.

doi:10.1103/physrevd.94.052009

Cited by 54 publications

(32 citation statements)

References 186 publications

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“…These constrain the gluino mass and the lightest squark mass of the second generation to lie above 1.8 TeV, see [85]. The stop and sbottom masses in general have to be above 800 GeV [85,86], and the slepton masses above 400 GeV [85].…”

Section: The Nmssm Parameter Scanmentioning

confidence: 99%

Gauge dependences of higher-order corrections to NMSSM Higgs boson masses and the charged Higgs Decay $${H^{\pm } \rightarrow W^\pm h_{i}}$$

et al. 2020

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In this paper we compute the electroweak corrections to the charged Higgs boson decay into a W boson and a neutral Higgs boson in the CP-conserving NMSSM. We calculate the process in a general R ξ gauge and investigate the dependence of the loop-corrected decay width on the gauge parameter ξ. The gauge dependence arises from the mixing of different loop orders. Phenomenology requires the inclusion of mass and mixing corrections to the external Higgs bosons in order to match the experimentally measured mass values. As a result, we move away from a strict one-loop calculation and consequently mix orders in perturbation theory. Moreover, determination of the loop-corrected masses in an iterative procedure also results in the mixing of different loop orders. Gauge dependence then arises from the mismatch with tree-level Goldstone boson couplings that are applied in the loop calculation, and from the gauge dependence of the loop-corrected masses themselves. We find that the gauge dependence is significant. *

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Section: The Nmssm Parameter Scanmentioning

confidence: 99%

Gauge dependences of higher-order corrections to NMSSM Higgs boson masses and the charged Higgs Decay $${H^{\pm } \rightarrow W^\pm h_{i}}$$

et al. 2020

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“…We required the masses of the lightest stop and sbottom to be heavier than 800 GeV [103,104]. 8 Based on [110] we chose a lower charged slepton mass limit of 400 GeV, and we required the lightest chargino mass to be above 300 GeV [111].…”

Section: The Nmssm Parameter Scanmentioning

confidence: 99%

Phenomenological comparison of models with extended Higgs sectors

Mühlleitner

Sampaio

Santos

et al. 2017

J. High Energ. Phys.

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Beyond the Standard Model (SM) extensions usually include extended Higgs sectors. Models with singlet or doublet fields are the simplest ones that are compatible with the ρ parameter constraint. The discovery of new non-SM Higgs bosons and the identification of the underlying model requires dedicated Higgs properties analyses. In this paper, we compare several Higgs sectors featuring 3 CP-even neutral Higgs bosons that are also motivated by their simplicity and their ability to solve some of the flaws of the SM. They are: the SM extended by a complex singlet field (CxSM), the singlet extension of the 2-Higgs-Doublet Model (N2HDM), and the Next-to-Minimal Supersymmetric SM extension (NMSSM). In addition, we analyse the CP-violating 2-Higgs-Doublet Model (C2HDM), which provides 3 neutral Higgs bosons with a pseudoscalar admixture. This allows us to compare the effects of singlet and pseudoscalar admixtures. Through dedicated scans of the allowed parameter space of the models, we analyse the phenomenologically viable scenarios from the view point of the SM-like Higgs boson and of the signal rates of the non-SM-like Higgs bosons to be found. In particular, we analyse the effect of singlet/pseudoscalar admixture, and the potential to differentiate these models in the near future. This is supported by a study of couplings sums of the Higgs bosons to massive gauge bosons and Open Access, c The Authors. Article funded by SCOAP 3 .https://doi.org/10.1007/JHEP08 (2017)132 JHEP08 (2017)132 to fermions, where we identify features that allow us to distinguish the models, in particular when only part of the Higgs spectrum is discovered. Our results can be taken as guidelines for future LHC data analyses, by the ATLAS and CMS experiments, to identify specific benchmark points aimed at revealing the underlying model.

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“…We present results of a search for top squark pair production in the final state with a single lepton ( = e or µ) with high transverse momentum (p T ), jets, and significant p T imbalance. Dedicated top squark searches have been carried out by the ATLAS [15] and CMS [16,17] collaborations based on 13 TeV proton-proton (pp) collisions at the CERN LHC, with data sets corresponding to integrated luminosities of 3.2 and 2.3 fb −1 , respectively. In this paper we report on an extension of the search of ref.…”

Section: Introductionmentioning

confidence: 99%

Search for top squark pair production in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV using single lepton events

Sirunyan¹,

Tumasyan²,

Adam³

et al. 2017

J. High Energ. Phys.

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A search for top squark pair production in pp collisions at √ s = 13 TeV is performed using events with a single isolated electron or muon, jets, and a large transverse momentum imbalance. The results are based on data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb −1 . No significant excess of events is observed above the expectation from standard model processes. Exclusion limits are set in the context of supersymmetric models of pair production of top squarks that decay either to a top quark and a neutralino or to a bottom quark and a chargino. Depending on the details of the model, we exclude top squarks with masses as high as 1120 GeV. Detailed information is also provided to facilitate theoretical interpretations in other scenarios of physics beyond the standard model. A Additional information 17The CMS collaboration 22 IntroductionSupersymmetry (SUSY) [1][2][3][4][5][6][7][8] is an extension of the standard model (SM) that postulates the existence of a superpartner for every SM particle with the same gauge quantum numbers but differing by one half-unit of spin. The search for a low mass top squark, the scalar partner of the top quark, is of particular interest following the discovery of a Higgs boson [9][10][11], as it would substantially contribute to the cancellation of the divergent loop corrections to the Higgs boson mass, providing a possible solution to the hierarchy problem [12][13][14].We present results of a search for top squark pair production in the final state with a single lepton ( = e or µ) with high transverse momentum (p T ), jets, and significant p T imbalance. Dedicated top squark searches have been carried out by the ATLAS [15] and CMS [16,17] collaborations based on 13 TeV proton-proton (pp) collisions at the CERN LHC, with data sets corresponding to integrated luminosities of 3.2 and 2.3 fb −1 , respectively. In this paper we report on an extension of the search of ref.[16] in the single-lepton final state that exploits the data sample collected with the CMS detector [18] in 2016, corresponding to the much larger integrated luminosity of 35.9 fb −1 . We find no evidence for an excess of events above the expected background from standard model processes, and interpret the results as limits on simplified models [19][20][21][22] of the pair production of top squarks ( t) Figure 1. Simplified-models diagrams corresponding to top squark pair production, followed by the specific decay modes targeted in this paper. (a) pp → t t → t χdecaying into top quarks and neutralinos ( χ 0 1 ) and/or bottom quarks and charginos ( χ ± 1 ), as shown in figure 1. We take the χ 0 1 to be the lightest supersymmetric particle (LSP) and to be stable. The CMS detectorThe central feature of the CMS apparatus is a superconducting solenoid of 6 m internal diameter, providing a magnetic field of 3.8 T. Within the solenoid volume are a silicon pixel and strip tracker, a lead tungstate crystal electromagnetic calorimeter, and a brass and scintillat...

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Search for top squarks in final states with one isolated lepton, jets, and missing transverse momentum ins=13 TeVpp

Cited by 54 publications

References 186 publications

Gauge dependences of higher-order corrections to NMSSM Higgs boson masses and the charged Higgs Decay $${H^{\pm } \rightarrow W^\pm h_{i}}$$

Gauge dependences of higher-order corrections to NMSSM Higgs boson masses and the charged Higgs Decay $${H^{\pm } \rightarrow W^\pm h_{i}}$$

Phenomenological comparison of models with extended Higgs sectors

Search for top squark pair production in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV using single lepton events

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