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相关论文: Experimental constraints on nMSSM and implications…

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The neutralino sector of the semi-constrained next-to-minimal supersymmetric standard model is explored under recent experimental constraints, with special attention to dark matter (DM) limits. The effects of the upper and lower bounds of…

高能物理 - 唯象学 · 物理学 2021-02-02 Elham Aldufeery , Maien Binjonaid

We examine the possibility of electroweak baryogenesis and dark matter in the nMSSM, a minimal extension of the MSSM with a singlet field. This extension avoids the usual domain wall problem of the NMSSM, and also appears as the low energy…

高能物理 - 唯象学 · 物理学 2009-07-09 A. Menon , D. E. Morrissey , C. E. M. Wagner

In the Minimal Supersymmetric Model (MSSM) and the Next to Minimal Supersymmetric Model [(M+1)SSM], an upper bound on the lightest higgs mass can be calculated. On the other hand, vacuum stability implies a lower limit on the mass of the…

高能物理 - 唯象学 · 物理学 2009-10-28 Marco A. Diaz , Tonnis A. ter Veldhuis , Thomas J. Weiler

A light singlino is a promising candidate for dark matter, and a light higgsino is natural in the parameter space of the NMSSM. We study the combined constraints on this scenario resulting from the dark matter relic density, the most recent…

高能物理 - 唯象学 · 物理学 2018-09-26 Ulrich Ellwanger , Cyril Hugonie

Using a simplified model framework, we assess observational limits and discovery prospects for neutralino dark matter, taken here to be a general admixture of bino, wino, and Higgsino. Experimental constraints can be weakened or even…

高能物理 - 唯象学 · 物理学 2015-06-12 Clifford Cheung , Lawrence J. Hall , David Pinner , Joshua T. Ruderman

The lightest supersymmetric particles could be higgsinos that have a small mixing with gauginos. If the lightest higgsino-like state makes up some or all of the dark matter with a thermal freezeout density, then its mass must be between…

高能物理 - 唯象学 · 物理学 2024-05-08 Stephen P. Martin

We present the first global analysis of the Constrained NMSSM that investigates the impact of the recent discovery of a 126 GeV Higgs-like boson, of the observation of a signal for BR(B_s->\mu^+\mu^-), and of constraints on supersymmetry…

The next-to-minimal supersymmetric standard model (NMSSM) with an extended Higgs sector offers one of the Higgs boson as the Standard model (SM) like Higgs with a mass around 125 GeV along with other Higgs bosons with lighter and heavier…

高能物理 - 唯象学 · 物理学 2017-04-10 Monoranjan Guchait , Jacky Kumar

We present a comprehensive analysis of the Non-Minimal Supersymmetric Standard Model (NMSSM) for large values of $\tan\beta$, the ratio of the vacuum expectation values of the two Higgs doublets, which arise when we impose the constraint of…

高能物理 - 唯象学 · 物理学 2014-11-17 B. Ananthanarayan , P. N. Pandita

The parameters of the Minimal Supersymmetric Standard Model appear to require uncomfortably precise adjustment in order to reconcile the electroweak symmetry breaking scale with the lower mass limits on a neutral Higgs scalar boson. This…

高能物理 - 唯象学 · 物理学 2008-11-26 Stephen P. Martin

After reviewing briefly the upper bounds on the mass of the lightest Higgs boson in the most general unconstrained minimal supersymmetric extension of the Standard Model, we discuss various arguments which reduce the parameter space of the…

高能物理 - 唯象学 · 物理学 2016-11-03 P. H. Chankowski , Pokorski

In the Next-to-Minimal-Supersymmetric-Standard-Model (NMSSM) the lightest supersymmetric particle (LSP) is a candidate for the dark matter (DM) in the universe. It is a mixture from the various gauginos and Higgsinos and can be bino-,…

高能物理 - 唯象学 · 物理学 2017-09-25 C. Beskidt , W. de Boer , D. I. Kazakov , S. Wayand

The recent LHC indications of a SM-like Higgs boson near 125 GeV are consistent not only with the Standard Model (SM) but also with Supersymmetry (SUSY). However naturalness arguments disfavour the Minimal Supersymmetric Standard Model…

高能物理 - 唯象学 · 物理学 2015-06-03 S. F. King , M. Muhlleitner , R. Nevzorov

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…

高能物理 - 唯象学 · 物理学 2017-03-08 Philip Bechtle , Howard E. Haber , Sven Heinemeyer , Oscar Stål , Tim Stefaniak , Georg Weiglein , Lisa Zeune

We perform global fits to the most recent data (after summer 2014) on Higgs boson signal strengths in the framework of the minimal supersymmetric standard model (MSSM). We further impose the existing limits on the masses of charginos,…

高能物理 - 唯象学 · 物理学 2015-11-11 Kingman Cheung , Jae Sik Lee , Po-Yan Tseng

Without assuming that Higgs masses have the same values as other scalar masses at the input GUT scale, we combine constraints on the minimal supersymmetric extension of the Standard Model (MSSM) coming from the cold dark matter density with…

高能物理 - 唯象学 · 物理学 2008-11-26 John Ellis , Keith A. Olive , Yudi Santoso

Taking into account the available accelerator and astrophysical constraints, the mass of the lightest neutral Higgs boson h in the minimal supersymmetric extension of the Standard Model with universal soft supersymmetry-breaking masses…

高能物理 - 唯象学 · 物理学 2015-06-04 John Ellis , Keith A. Olive

We examine the current lower bound on the charged Higgs boson mass in the Minimal Supersymmetric Standard Model. By applying direct search constraints on the neutral Higgs bosons and other supersymmetric states, as well as a number of…

高能物理 - 唯象学 · 物理学 2009-01-22 Brian Dudley , Christopher Kolda

We consider the Higgs boson mass in a class of the UMSSM models in which the MSSM gauge group is extended by an additional U(1)' group. Implementing the universal boundary conditions at the GUT scale we target phenomenologically interesting…

高能物理 - 唯象学 · 物理学 2018-06-26 Yasar Hicyilmaz , Levent Solmaz , Sukru Hanif Tanyildizi , Cem Salih Un

The next-to-minimal supersymmetric standard model can host light neutralino dark matter with mass of order GeV scale. It is dominated by the singlino component as a result of approximate Peccei-Quinn symmetry. This paper is devoted to…

高能物理 - 唯象学 · 物理学 2018-02-22 Qiurong Mou , Hongyan Wu , Sibo Zheng