中文
相关论文

相关论文: A precision study of the fine tuning in the DiracN…

200 篇论文

We discuss the large radiative corrections to the masses of supersymmetric Higgs bosons in the MSSM and in its simplest extension, the NMSSM, with particular attention paid to the bounds on the lightest CP-even Higgs mass found in both…

高能物理 - 唯象学 · 物理学 2007-05-23 P. L. White

FlexibleSUSY is a software package for various calculations in any model of physics beyond the standard model (not just any supersymmetric model). FlexibleSUSY can solve boundary value problems and uses this to find…

In MSSM models with various boundary conditions for the soft breaking terms (m_{soft}) and for a higgs mass of 126 GeV, there is a (minimal) electroweak fine-tuning Delta\approx 800 to 1000 for the constrained MSSM and Delta\approx 500 for…

高能物理 - 唯象学 · 物理学 2015-06-19 I. Antoniadis , E. M. Babalic , D. M. Ghilencea

Motivated by the recent measurement of muon anomalous magnetic moment at Fermilab, the rapid progress of the LHC search for supersymmetry, and the significantly improved sensitivities of dark matter direct detection experiments, we studied…

高能物理 - 唯象学 · 物理学 2023-11-13 Yangle He , Lei Meng , Yuanfang Yue , Di Zhang

The recent discovery of the 125.5 GeV Higgs boson at the LHC has fueled interest in the next-to-minimal supersymmetric standard model (NMSSM) as it may require less fine-tuning than the minimal model to accommodate such a heavy Higgs. To…

高能物理 - 唯象学 · 物理学 2014-09-17 Doyoun Kim , Peter Athron , Csaba Balázs , Benjamin Farmer , Elliot Hutchison

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…

高能物理 - 唯象学 · 物理学 2008-11-26 J. Ellis , A. Ferstl , K. A. Olive , Y. Santoso

We study the little hierarchy between mass parameters in the Higgs sector and other SUSY breaking masses. This type of spectrum can relieve the fine-tuning problem in the MSSM Higgs sector. Our scenario can be realized by superconformal…

高能物理 - 唯象学 · 物理学 2015-06-25 Tatsuo Kobayashi , Haruhiko Terao

We present global fits of the constrained Minimal Supersymmetric Standard Model (cMSSM) and the Non-Universal Higgs Model (NUHM), including the most recent CMS constraint on the Higgs boson mass, 5.8/fb integrated luminosity null…

高能物理 - 唯象学 · 物理学 2014-04-28 C. Strege , G. Bertone , F. Feroz , M. Fornasa , R. Ruiz de Austri , R. Trotta

The nearly Minimal Supersymmetric Standard Model (nMSSM) is one of the promising models of the new physics, since this model can avoid hierarchy problem, mu problem, cosmological domain wall problem, and tadpole problem simultaneously. In…

高能物理 - 唯象学 · 物理学 2019-04-30 Teppei Kitahara

We propose the framework, "generalized supersoft supersymmetry breaking". "Supersoft" models, with $D$-type supersymmetry breaking and heavy Dirac gauginos, are considerably less constrained by the LHC searches than the well studied MSSM.…

高能物理 - 唯象学 · 物理学 2015-05-27 Ann E. Nelson , Tuhin S. Roy

We investigate exclusion limits on the the non-universal gaugino mass scenario in the Minimal Supersymmetric Standard Model (MSSM), according the the latest results of the super-particle search at the LHC8 and the LHC13. In this scenario,…

高能物理 - 唯象学 · 物理学 2016-03-23 J. Kawamura , Y. Omura

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

We demonstrate that natural supersymmetry is readily realized in the framework of SU(4)_c \times SU(2)_L \times SU(2)_R with non-universal gaugino masses. Focusing on ameliorating the little hierarchy problem, we explore the parameter space…

高能物理 - 唯象学 · 物理学 2015-06-12 Ilia Gogoladze , Fariha Nasir , Qaisar Shafi

We investigate how the Fine-Tuning (FT) in the B-L Supersymmetric Standard Model (BLSSM) compares to the Minimally Supersymmetric Standard Model (MSSM), where both models have universality. This is done for two scales: both low (i.e.…

高能物理 - 唯象学 · 物理学 2017-10-04 Luigi Delle Rose , Shaaban Khalil , Simon J. D. King , Carlo Marzo , Stefano Moretti , Cem S. Un

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…

In view of ongoing measurements of the Higgs-like boson at the LHC and direct searches for dark matter, we explore the possibility of accommodating the potential results in a simple new-physics model with discrete gauge symmetry as well as…

高能物理 - 唯象学 · 物理学 2015-03-20 Cheng-Wei Chiang , Takaaki Nomura , Jusak Tandean

We present FlexibleEFTHiggs, a method for calculating the SM-like Higgs pole mass in SUSY (and even non-SUSY) models, which combines an effective field theory approach with a diagrammatic calculation. It thus achieves an all order…

高能物理 - 唯象学 · 物理学 2017-01-23 Peter Athron , Jae-hyeon Park , Tom Steudtner , Dominik Stöckinger , Alexander Voigt

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

We continue a previous study of the MSSM Higgs Lagrangian extended by all effective operators of dimension d=6 that can be present beyond the MSSM, consistent with its symmetries. By supersymmetry, such operators also extend the neutralino…

高能物理 - 唯象学 · 物理学 2011-11-16 I. Antoniadis , E. Dudas , D. M. Ghilencea , P. Tziveloglou

We discuss the allowed parameter spaces of supersymmetric scenarios in light of improved Higgs mass predictions provided by FeynHiggs 2.10.0. The Higgs mass predictions combine Feynman-diagrammatic results with a resummation of leading and…

高能物理 - 唯象学 · 物理学 2015-06-18 O. Buchmueller , M. J. Dolan , J. Ellis , T. Hahn , S. Heinemeyer , W. Hollik , J. Marrouche , K. A. Olive , H. Rzehak , K. de Vries , G. Weiglein