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The Next to Minimal Supersymmetric Standard Model (NMSSM) with a Higgs-singlet coupling {\lambda} close to unity, moderate tan {\beta} and stop masses below 1 TeV minimizes the fine tuning of the electroweak scale, making possible that the…

High Energy Physics - Phenomenology · Physics 2013-06-25 Riccardo Barbieri , Dario Buttazzo , Kristjan Kannike , Filippo Sala , Andrea Tesi

We analyze the Minimal Supersymmetric extension of the Standard Model that we have after the discovery of the Higgs boson at the LHC, the hMSSM (habemus MSSM?), i.e. a model in which the lighter $h$ boson has a mass of approximately 125 GeV…

High Energy Physics - Phenomenology · Physics 2014-05-12 A. Djouadi , L. Maiani , G. Moreau , A. Polosa , J. Quevillon , V. Riquer

Giving up the assumption of the gaugino mass unification at the GUT scale, the latest LEP and Tevatron data still allow the lightest supersymmetric Higgs to have a large branching fraction into invisible neutralinos. Such a Higgs may be…

High Energy Physics - Phenomenology · Physics 2009-11-07 G. Belanger , F. Boudjema , A. Cottrant , R. M. Godbole , A. Semenov

In the "intense--coupling" regime all Higgs bosons of the Minimal Supersymmetric extension of the Standard Model (MSSM) are rather light and have comparable masses of O(100 GeV). They couple maximally to electroweak gauge bosons, and for…

High Energy Physics - Phenomenology · Physics 2007-05-23 Margarete Muhlleitner

We explore the Higgs boson implications of a class of supersymmetric models, which extends the MSSM gauge group by a $U(1)^{\prime}$ symmetry, which is broken at low energy scales by VEVs of four MSSM singlet fields. These singlets also…

High Energy Physics - Phenomenology · Physics 2023-09-18 Yaşar Hiçyılmaz , Levent Selbuz , Cem Salih Ün

Supersymmetric models with radiatively-driven naturalness (RNS) enjoy low electroweak fine-tuning whilst respecting LHC search limits on gluinos and top squarks and allowing for $m_h\simeq 125$ GeV. While the heavier Higgs bosons $H,\ A$…

High Energy Physics - Phenomenology · Physics 2022-06-08 Howard Baer , Vernon Barger , Rishabh Jain , Chung Kao , Dibyashree Sengupta , Xerxes Tata

We study the Higgs sector of the U(1)'-extended MSSM with CP violation. This is an extension of the MSSM Higgs sector by one singlet field, introduced to generate the \mu term dynamically. We are particularly interested in non-standard…

High Energy Physics - Phenomenology · Physics 2013-04-17 Mariana Frank , Levent Selbuz , Levent Solmaz , Ismail Turan

Due to the limited statistics so far accumulated in the Higgs boson search at the LHC, the Higgs boson property has not yet been tightly constrained and it is still allowed for the Higgs boson to decay invisibly to dark matter with a…

High Energy Physics - Phenomenology · Physics 2015-06-04 Junjie Cao , Zhaoxia Heng , Jin Min Yang , Jingya Zhu

We consider the addition of a condensing singlet scalar field to the Standard Model. Such a scenario may be motivated by any number of theoretical ideas, including the common result in string-inspired model building of singlet scalar fields…

High Energy Physics - Phenomenology · Physics 2010-10-27 Matthew Bowen , Yanou Cui , James Wells

We present some highlights on the complementaries of the Higgs and SUSY searches at the LHC, using the 8 and 13 TeV results. In particular, we discuss the constraints that can be obtained on the MSSM parameters by the determination of the…

High Energy Physics - Phenomenology · Physics 2018-12-03 A. Arbey , M. Battaglia , A. Djouadi , F. Mahmoudi , M. Muehlleitner , G. Robbins , M. Spira

The discovery of the Higgs boson at the Large Hadron Collider (LHC) has a great impact on the minimal supersymmetric extension of the Standard Model (MSSM). In the context of the constrained MSSM (CMSSM) and its extension with non-universal…

High Energy Physics - Phenomenology · Physics 2014-07-23 Nobuchika Okada , Shabbar Raza , Qaisar Shafi

The NMSSM contains a Higgs singlet in addition to the two Higgs doublets typical of the MSSM, thus resulting in a total of seven physical Higgs mass states. Therefore, the phenomenology of the NMSSM Higgs sector can vary considerably from…

High Energy Physics - Phenomenology · Physics 2009-01-07 S. Moretti , S. Munir

We discuss the search for the heavy charged Higgs bosons H^\pm, implicitly of the Minimal Supersymmetric Standard Model, in the tau-nu decay mode at the LHC. Compared to the dominant decay mode H^\pm\to bt, the channel suffers from…

High Energy Physics - Phenomenology · Physics 2007-05-23 K. Odagiri

The CP-violating MSSM allows existence of a light neutral Higgs boson ($M_{H_1} \lapp 50$ GeV) in the CPX scenario in the low $\tan \beta (\lapp 5)$ region, which could have escaped the LEP searches due to a strongly suppressed $H_1 Z Z$…

High Energy Physics - Phenomenology · Physics 2009-11-10 Dilip Kumar Ghosh , R. M. Godbole , D. P. Roy

In this paper we discuss the production of a heavy scalar MSSM Higgs boson H and its subsequent decays into pairs of electroweak gauge bosons WW and ZZ. We perform a scan over the relevant MSSM parameters, using constraints from direct…

High Energy Physics - Phenomenology · Physics 2015-06-12 Patrick Gonzalez , Sophy Palmer , Martin Wiebusch , Karina Williams

Extra scalar fields are common in beyond Standard Model (SM) new physics, and they may mix with the 125 GeV SM-like Higgs boson discovered at the LHC. This fact suggests possible discovery channels for these new scalar fields with their…

High Energy Physics - Phenomenology · Physics 2014-07-31 Ning Chen , Chun Du , Yaquan Fang , Lan-Chun Lü

We study the decays of a standard model-like MSSM Higgs boson to pairs of neutralinos, each of which subsequently decays promptly to a photon and a gravitino. Such decays can arise in supersymmetric scenarios where supersymmetry breaking is…

High Energy Physics - Phenomenology · Physics 2010-03-02 John D. Mason , David E. Morrissey , David Poland

We perform a parameter scan of the phenomenological Minimal Supersymmetric Standard Model (pMSSM) with eight parameters taking into account the experimental Higgs boson results from Run I of the LHC and further low-energy observables. We…

High Energy Physics - Phenomenology · Physics 2017-03-08 Philip Bechtle , Howard E. Haber , Sven Heinemeyer , Oscar Stål , Tim Stefaniak , Georg Weiglein , Lisa Zeune

The search for MSSM Higgs bosons will be an important goal at the LHC. We analyze the search reach of the CMS experiment for the heavy neutral MSSM Higgs bosons with an integrated luminosity of 30 or 60 fb^-1. This is done by combining the…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Gennai , S. Heinemeyer , A. Kalinowski , R. Kinnunen , S. Lethi , A. Nikitenko , G. Weiglein

ATLAS and CMS collaborations have reported the results on the Higgs search analyzing $\sim 36$ fb$^{-1}$ data from Run-II of LHC at 13 TeV. In this work, we study the Higgs sector of the phenomenological Minimal Supersymmetric Standard…

High Energy Physics - Phenomenology · Physics 2020-10-06 Rahool Kumar Barman , Biplob Bhattacherjee , Arghya Choudhury , Debtosh Chowdhury , Jayita Lahiri , Shamayita Ray
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