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In the Minimal Supersymmetric Standard Model light neutralinos can satisfy the dark matter (DM) abundance constraint by resonant annihilation via a $Z$ or a light Higgs ($h$) boson. In this work we study the current and future status of…

High Energy Physics - Phenomenology · Physics 2019-01-09 Giancarlo Pozzo , Yang Zhang

This study provides a brief overview of low-energy supersymmetry (SUSY) in light of current experimental constraints, such as collider searches, dark matter searches, and muon $g-2$ measurements. In addition, we survey a variety of low…

High Energy Physics - Phenomenology · Physics 2022-01-04 Fei Wang , Wenyu Wang , Jin Min Yang , Yang Zhang , Bin Zhu

This work summarizes and puts in an overall perspective studies done within CMS concerning the discovery potential for squarks and gluinos, sleptons, charginos and neutralinos, SUSY dark matter, lightest Higgs, sparticle mass determination…

We have explored the possibilities of scenarios with heavy gluinos and light stops in supersymmetric (SUSY) standard models with extra vector-like multiplets. If we assume the hierarchical structure for soft masses of the minimal…

High Energy Physics - Phenomenology · Physics 2017-04-06 Junji Hisano , Wataru Kuramoto , Takumi Kuwahara

It is known that in the absence of a gauge singlet field, a specific class of supersymmetry (SUSY) breaking non-holomorphic (NH) terms can be soft breaking in nature so that they may be considered along with the Minimal Supersymmetric…

High Energy Physics - Phenomenology · Physics 2018-02-01 Utpal Chattopadhyay , Debottam Das , Samadrita Mukherjee

Recent null results from LHC8 SUSY searches along with the discovery of a SM-like Higgs boson with mass m(h) ~ 125.5 GeV indicates sparticle masses in the TeV range, causing tension with conventional measures of electroweak fine-tuning. We…

High Energy Physics - Phenomenology · Physics 2014-07-02 Howard Baer , Vernon Barger , Dan Mickelson , Maren Padeffke-Kirkland

Weak-scale supersymmetry (SUSY) is well motivated as a technically natural solution to the gauge hierarchy problem. LHC limits on superpartners, however, have sharpened the Little Hierarchy problem, raising the question of why $m_{weak} \ll…

High Energy Physics - Phenomenology · Physics 2026-01-06 Kairui Zhang

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…

We investigate both the $Z$ and $H$ poles solutions for the Higgsino mass parameter $\mu>0$ and $\mu<0$ for the neutralino dark matter in light of the LHC supersymmetry searches and the direct detection dark matter experiments, LUX-ZEPLIN…

High Energy Physics - Phenomenology · Physics 2025-01-22 Imtiaz Khan , Waqas Ahmed , Tianjun Li , Shabbar Raza , Ali Muhammad

Phenomenologically viable and interesting regions of parameter space in the minimal super-gravity (mSUGRA) model with small $m_0$ and small $m_{1/2}$ consistent with the WMAP data on dark matter relic density and the bound on the mass of…

High Energy Physics - Phenomenology · Physics 2008-11-26 Utpal Chattopadhyay , Debottam Das , Amitava Datta , Sujoy Poddar

We explore the parameter space of a Constrained Next-to-Minimal Supersymmetric Standard Model with GUT scale boundary conditions (CNMSSM) and find regions where the relic density of the lightest neutralino is compatible with the WMAP…

High Energy Physics - Phenomenology · Physics 2014-11-18 C. Hugonie , G. Belanger , A. Pukhov

Motivated by the latest results of the LHC Run-2 and LUX experiments, we examine the status of the constrained minimal supersymmetric standard model (CMSSM) by performing a global fit. We construct a likelihood function including the…

High Energy Physics - Phenomenology · Physics 2017-04-19 Chengcheng Han , Ken-ichi Hikasa , Lei Wu , Jin Min Yang , Yang Zhang

Recently, WMAP has measured the cosmological parameters to a much greater accuracy. We analyze the implications of this more precise measurement for supersymmetric dark matter and for the direct detection of supersymmetry at accelerators.…

High Energy Physics - Phenomenology · Physics 2008-11-26 Utpal Chattopadhyay , Achille Corsetti , Pran Nath

We study the naturalness, dark matter, and muon anomalous magnetic moment in the Supersymmetric Standard Models (SSMs) with a pseudo-Dirac gluino (PDGSSMs) from hybrid $F-$ and $D-$term supersymmetry (SUSY) breakings. To obtain the observed…

High Energy Physics - Phenomenology · Physics 2018-01-09 Chuang Li , Bin Zhu , Tianjun Li

With the rapid progress of dark matter direct detection experiments, the attractiveness of the popular bino-dominated dark matter in economical supersymmetric theories is fading. As an alternative, the singlino-dominated dark matter in…

High Energy Physics - Phenomenology · Physics 2023-04-19 Junjie Cao , Xinglong Jia , Lei Meng , Yuanfang Yue , Di Zhang

In the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM) we evaluate the electroweak fine tuning measure that provides a quantitative test of supersymmetry as a solution to the hierarchy problem. Taking account of…

High Energy Physics - Phenomenology · Physics 2014-11-20 S. Cassel , D. M. Ghilencea , G. G. Ross

We propose the Supersymmetric Standard Models (SSMs) with a pseudo-Dirac gluino from hybrid $F-$ and $D-$term supersymmetry (SUSY) breakings. Similar to the SSMs before the LHC, all the supersymmetric particles in the Minimal SSM (MSSM)…

High Energy Physics - Phenomenology · Physics 2015-07-16 Ran Ding , Tianjun Li , Florian Staub , Chi Tian , Bin Zhu

We revisit minimal supersymmetric SU(5) grand unification (GUT) models in which the soft supersymmetry-breaking parameters of the minimal supersymmetric Standard Model (MSSM) are universal at some input scale, $M_{in}$, above the…

High Energy Physics - Phenomenology · Physics 2016-11-14 John Ellis , Jason L. Evans , Azar Mustafayev , Natsumi Nagata , Keith A. Olive

Recent results from Higgs boson and supersymmetry searches at the Large Hadron Collider provide strong new motivations for supersymmetric theories with heavy superpartners. We reconsider focus point supersymmetry (FP SUSY), in which all…

High Energy Physics - Phenomenology · Physics 2013-05-30 Jonathan L. Feng , Konstantin T. Matchev , David Sanford

We perform a comprehensive analysis of the Minimal Supersymmetric Standard Model (MSSM) in the scenario where the scalar partners of the fermions and the Higgs particles (except for the Standard-Model-like one) are assumed to be very heavy…

High Energy Physics - Phenomenology · Physics 2011-12-09 Nicolas Bernal , Abdelhak Djouadi , Pietro Slavich