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Supersymmetry is a prime candidate for physics beyond the Standard Model because low-energy supersymmetry stabilizes the Higgs mass avoiding fine-tuning and leads to natural electroweak symmetry breaking. However, searches at the Large…

High Energy Physics - Phenomenology · Physics 2015-11-16 Kohsaku Tobioka

Recent LHC data suggest an excess in the Higgs decay channels into gamma gamma, W W and Z Z at roughly 125 GeV. The current excess in the diphoton channel is twice that expected from a Standard Model Higgs; whilst this may well change with…

High Energy Physics - Phenomenology · Physics 2012-09-07 Daniel Albornoz Vasquez , Genevieve Belanger , Celine Boehm , Jonathan Da Silva , Peter Richardson , Chris Wymant

The Next-to-Minimal Supersymmetric Standard Model (NMSSM) provides a natural framework to realize a low-scale supersymmetric (SUSY) model, where a singlet superfield is added to the minimal model to generate a SUSY-scale higgsino mass term…

High Energy Physics - Phenomenology · Physics 2018-11-14 Junichiro Kawamura , Tatsuo Kobayashi , Natsumi Nagata

The Higgs boson discovery stirred interest in next-to-minimal supersymmetric models, due to the apparent fine-tuning required to accommodate it in minimal theories. To assess their naturalness, we compare fine-tuning in a $\mathbb{Z}_3$…

High Energy Physics - Phenomenology · Physics 2017-11-10 Peter Athron , Csaba Balazs , Benjamin Farmer , Andrew Fowlie , Dylan Harries , Doyoun Kim

We investigate the dark matter constraints for the nonminimal SUSY standard model (NMSSM). The cosmologically restricted mass spectra of the NMSSM are compared to the minimal SUSY standard model (MSSM). The differences of the two models…

High Energy Physics - Phenomenology · Physics 2008-12-25 A. Stephan

This is a brief overview on the low energy supersymmetry in light of current experiments including the LHC searches, the dark matter (DM) detections, the muon g-2 and the CDF II measurement of the W-boson mass. We focus on the minimal…

High Energy Physics - Phenomenology · Physics 2022-11-15 Jin Min Yang , Pengxuan Zhu , Rui Zhu

The general Next-to-Minimal Supersymmetric Standard Model (NMSSM) describes the singlino-dominated dark-matter (DM) property by four independent parameters: singlet-doublet Higgs coupling coefficient $\lambda$, Higgsino mass $\mu_{tot}$, DM…

High Energy Physics - Phenomenology · Physics 2021-07-14 Junjie Cao , Demin Li , Jingwei Lian , Yuanfang Yue , Haijing Zhou

Some regions of parameter space of the minimal supersymmetric standard model (MSSM) with high scale supersymmetry breaking have extreme sensitivity of electroweak symmetry breaking (EWSB) to the top quark mass through renormalisation group…

High Energy Physics - Phenomenology · Physics 2015-06-12 B. C. Allanach , M. A. Parker

Low energy supersymmetric models provide a solution to the hierarchy problem and also have the necessary ingredients to solve two of the most outstanding issues in cosmology: the origin of dark matter and baryonic matter. One of the most…

High Energy Physics - Phenomenology · Physics 2009-11-13 C. Balazs , M. Carena , A. Freitas , C. E. M. Wagner

Recent data from CoGeNT and DAMA are roughly consistent with a very light dark matter particle with $m\sim 4-10\gev$ and spin-independent cross section of order $\sigma_{SI} \sim (1-3)\times 10^{-4}\pb$. An important question is whether…

High Energy Physics - Phenomenology · Physics 2015-05-20 John F. Gunion

We perform a systematic study of radiative corrections to the masses of the Higgs bosons in the minimal supersymmetric standard model (MSSM) augmented by a single gauge singlet, the so-called next-to-minimal supersymmetric standard model…

High Energy Physics - Phenomenology · Physics 2011-01-13 T. Elliott , S. F. King , P. L. White

We calculate dark matter scattering rates in the minimal supersymmetric extension of the Standard Model (MSSM), allowing the soft supersymmetry-breaking masses of the Higgs multiplets, m_{1,2}, to be non-universal (NUHM). Compared with the…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Ellis , A. Ferstl , K. A. Olive , Y. Santoso

We present several benchmark points in the phenomenological Minimal Supersymmetric Standard Model (pMSSM). We select these models as experimentally well-motivated examples of the MSSM which predict the observed Higgs mass and dark matter…

High Energy Physics - Phenomenology · Physics 2013-05-14 Matthew W. Cahill-Rowley , JoAnne L. Hewett , Ahmed Ismail , Michael E. Peskin , Thomas G. Rizzo

We present an extended study of how the Next to Minimal Supersymmetric Model easily avoids fine-tuning in electroweak symmetry breaking for a SM-like light Higgs with mass in the vicinity of $100\gev$, as beautifully consistent with…

High Energy Physics - Phenomenology · Physics 2008-11-26 Radovan Dermisek , John F. Gunion

We present the results and prospects for searches beyond the Standard Model (SM) at the LHC by the ATLAS and CMS collaborations. The minimal supersymmetric extension of the SM has been investigated in various configurations and lower limits…

High Energy Physics - Experiment · Physics 2019-08-13 Daniel Teyssier

The structure of the MSSM is reviewed. We first motivate the particle content of the theory by examining the quantum numbers of the known standard model particles and by the requirement of anomaly cancellation. Once the particle content is…

High Energy Physics - Phenomenology · Physics 2009-09-17 Csaba Csaki

The excluded tan(beta) range and Higgs boson mass regions in the framework of the Minimal Supersymmetric extension of the Standard Model (MSSM) depend on several parameters. The Higgs boson masses, cross-sections and branching fractions…

High Energy Physics - Phenomenology · Physics 2009-10-31 Andre Sopczak

We study the impact of the measurements of three sets of observables on the parameter space of the constrained minimal supersymmetric Standard Model (cMSSM), its slightly general variant, the non-universal scalar model (NUSM), and some…

High Energy Physics - Phenomenology · Physics 2015-06-16 Gautam Bhattacharyya , Anirban Kundu , Tirtha Sankar Ray

We present the first version of the new scanning tool NMSSMScanner that allows to perform efficient scans in the complex multi-parameter space of the Next-to-Minimal Supersymmetric extension of the Standard Model (NMSSM) while taking into…

High Energy Physics - Phenomenology · Physics 2026-04-29 Rafael Boto , Thi Nhung Dao , Felix Egle , Karim Elyaouti , Martin Gabelmann , Margarete Mühlleitner , Johann Plotnikov

In this article, we explore the ability of direct and indirect dark matter experiments to not only detect neutralino dark matter, but to constrain and measure the parameters of supersymmetry. In particular, we explore the relationship…

High Energy Physics - Phenomenology · Physics 2014-11-18 Dan Hooper , Andrew M. Taylor