Status of the 98–125 GeV Higgs bosons scenario with updated LHC-8 data

Bhattacherjee, Biplob; Chakraborti, Manimala; Chakraborty, Amit; Chattopadhyay, Utpal; Ghosh, Dilip Kumar

doi:10.1103/physrevd.93.075004

Cited by 7 publications

(5 citation statements)

References 111 publications

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“…It is to be noted that the SM-like Higgs state mentioned above may characteristically become the lighter or the heavier of the two CP -even doublet Higgs eigenstates. Phenomenological studies of such light Higgs boson(s) that could have escaped detection at the past and recent experiments have already been taken up [74][75][76].…”

Section: The Higgs and The Neutralino Sectorsmentioning

confidence: 99%

Exploring viable vacua of the Z 3-symmetric NMSSM

Beuria

Chattopadhyay

Datta

et al. 2017

J. High Energ. Phys.

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Abstract:We explore the vacua of the Z 3 -symmetric Next-to-Minimal Supersymmetric Standard Model (NMSSM) and their stability by going beyond the simplistic paradigm that works with a tree-level neutral scalar potential and adheres to some specific flat directions in the field space. We work in the so-called phenomenological NMSSM (pNMSSM) scenario. Also, for our purpose, we adhere to a reasonably 'natural' setup by requiring |µ eff | not too large. Key effects are demonstrated by first studying the profiles of this potential under various circumstances of physical interest via a semi-analytical approach. The results thereof are compared to the ones obtained from a dedicated package like Vevacious which further incorporates the thermal effects to the potential. Regions of the pNMSSM parameter space that render the desired symmetry breaking (DSB) vacuum absolutely stable, long-or short-lived (in relation to the age of the Universe) under quantum/thermal tunneling are delineated. Regions that result in the appearance of color and charge breaking (CCB) minima are also presented. It is demonstrated that light singlet scalars along with a light LSP (lightest supersymmetric particle) having an appreciable singlino admixture are compatible with a viable DSB vacuum. Their implications for collider experiments are commented upon.

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Section: The Higgs and The Neutralino Sectorsmentioning

confidence: 99%

Exploring viable vacua of the Z 3-symmetric NMSSM

Beuria

Chattopadhyay

Datta

et al. 2017

J. High Energ. Phys.

Self Cite

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“…Most notably it stabilises the electroweak scale [2][3][4][5][6] with respect to large corrections from new physics at the Planck scale [7][8][9][10][11], allows the unification of gauge couplings [12][13][14][15], provides a dark matter (DM) candidate that can fit the observed relic abundance [16,17] and predicts a light Higgs boson, in accordance with the 2012 discovery [18,19]. This has prompted a vast number of investigations of this model, with recent literature studying precision corrections to the Higgs mass [20][21][22][23][24][25][26][27][28][29] and other aspects of Higgs physics [30][31][32][33][34][35][36][37][38][39][40], DM , the matter-antimatter asymmetry of the Universe [79][80][81], vacuum stability [82], cosmic inflation [83][84][...…”

Section: Introductionmentioning

confidence: 99%

A global fit of the MSSM with GAMBIT

Athron¹,

Balázs²,

Bringmann³

et al. 2017

Eur. Phys. J. C

123

160

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We study the seven-dimensional Minimal Supersymmetric Standard Model (MSSM7) with the new GAM-BIT software framework, with all parameters defined at the weak scale. Our analysis significantly extends previous weak-scale, phenomenological MSSM fits, by adding more and newer experimental analyses, improving the accuracy and detail of theoretical predictions, including dominant uncertainties from the Standard Model, the Galactic dark matter halo and the quark content of the nucleon, and employing novel and highly-efficient statistical sampling methods to scan the parameter space. We find regions of the MSSM7 a

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“…The Minimal Supersymmetric extension of the SM (MSSM) offers solutions to many of these shortcomings, with substantial implications for dark matter , the cosmic matter-antimatter asymmetry [41][42][43], Higgs physics [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60], the unification of gauge forces [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76], the stability of the electroweak vacuum [77][78][79][80], cosmological inflation [81][82][83][84][85][86][87][88][89]…”

Section: Introductionmentioning

confidence: 99%

Global fits of GUT-scale SUSY models with GAMBIT

Athron¹,

Balázs²,

Bringmann³

et al. 2017

Eur. Phys. J. C

103

126

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We present the most comprehensive global fits to date of three supersymmetric models motivated by grand unification: the Constrained Minimal Supersymmetric Standard Model (CMSSM), and its Non-Universal Higgs Mass generalisations NUHM1 and NUHM2. We include likelihoods from a number of direct and indirect dark matter searches, a large collection of electroweak precision and flavour observables, direct searches for supersymmetry at LEP and Runs I and II of the LHC, and constraints from Higgs observables. Our analysis improves on existing results not only in terms of the number of included observables, but also in the a e-mail: peter.athron@coepp. level of detail with which we treat them, our sampling techniques for scanning the parameter space, and our treatment of nuisance parameters. We show that stau co-annihilation is now ruled out in the CMSSM at more than 95% confidence. Stop co-annihilation turns out to be one of the most promising mechanisms for achieving an appropriate relic density of dark matter in all three models, whilst avoiding all other constraints. We find high-likelihood regions of parameter space featuring light stops and charginos, making them potentially detectable in the near future at the LHC. We also show that tonne-scale direct detection will play a largely complementary role, probing large parts of the remaining viable parameter space, including essentially all models with multi-TeV neutralinos.

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Status of the 98–125 GeV Higgs bosons scenario with updated LHC-8 data

Cited by 7 publications

References 111 publications

Exploring viable vacua of the Z 3-symmetric NMSSM

Exploring viable vacua of the Z 3-symmetric NMSSM

A global fit of the MSSM with GAMBIT

Global fits of GUT-scale SUSY models with GAMBIT

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