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We place constraints on the parameter space of the minimal supergravity (SUGRA) inspired supersymmetric (SUSY) extension of the standard model (SM), i.e. the mSUGRA model, by studying the loop-level contributions of supersymmetric particles…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. C. Cho , K. Hagiwara , C. Kao , R. Szalapski

The light CP even Higgs boson mass, Mh, is calculated to three-loop accuracy within the Minimal Supersymmetric Standard Model (MSSM). The result is expressed in terms of DRbar parameters and implemented in the computer program H3m. The…

High Energy Physics - Phenomenology · Physics 2014-11-21 P. Kant , R. V. Harlander , L. Mihaila , M. Steinhauser

We explore the coannihilation region of the constrained minimal supersymmetric standard model (CMSSM) being consistent with current experimental/observational results. The requirements from the experimental/observational results are the…

High Energy Physics - Phenomenology · Physics 2013-09-10 Yasufumi Konishi , Shingo Ohta , Joe Sato , Takashi Shimomura , Kenichi Sugai , Masato Yamanaka

For the search for additional Higgs bosons in the Minimal Supersymmetric Standard Model (MSSM) as well as for future precision analyses in the Higgs sector a precise knowledge of their decay properties is mandatory. We evaluate all two-body…

High Energy Physics - Phenomenology · Physics 2015-06-11 S. Heinemeyer , C. Schappacher

This lecture discusses the Higgs boson sectors of the SM and the MSSM, in particular in view of the recently discovered particle at \sim 125.5 GeV. It also covers their connection to electroweak precision physics and the implications for…

High Energy Physics - Phenomenology · Physics 2013-01-31 S. Heinemeyer

Within the framework of the Minimal Supersymmetric Standard Model (MSSM) the Higgs masses and LEP II production cross sections are calculated for a wide range of the parameter space. In addition, the parameter space restricted by…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. V. Gladyshev , D. I. Kazakov , W. de Boer , G. Burkart , R. Ehret

The search for heavy Higgs bosons is an important step to probe the parameter space of the Minimal Supersymmetric Standard Model. In this work, we classify all possible decay modes of the supersymmetric heavy Higgs boson using the SModelS…

High Energy Physics - Phenomenology · Physics 2017-11-02 Suchita Kulkarni , Lukas Lechner

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

In collaboration with G.D. Moore, the electroweak phase transition in the minimal supersymmetric standard model is studied using the two-loop effective potential. We make a comprehensive search of the MSSM parameter space consistent with…

High Energy Physics - Phenomenology · Physics 2007-05-23 James M. Cline

The upper bound on the mass of the light CP-even Higgs boson of the minimal supersymmetric model (MSSM) depends on the supersymmetric particle spectrum via radiative loop effects. At present, complete one-loop results and partial two-loop…

High Energy Physics - Phenomenology · Physics 2007-05-23 Howard E. Haber

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

A compact approximation formula for the mass of the lightest neutral CP-even Higgs boson, m_h, in the Minimal Supersymmetric Standard Model (MSSM) is derived from the diagrammatic two-loop result for m_h up to O(alpha alpha_s). By…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. Heinemeyer , W. Hollik , G. Weiglein

We exploit the measured branching ratio for $b \rightarrow s\gamma$ to derive lower limits on the sparticle and Higgs masses in the minimal string unification models. For the LSP('bino'), chargino and the lightest Higgs, these turn out to…

High Energy Physics - Phenomenology · Physics 2014-11-17 Shaaban Khalil , Antonio Masiero , Qaisar Shafi

The latest preliminary results of the searches for Higgs bosons and Supersymmetric particles at LEP are reviewed. The results include the data-taking in 1999 up to center-of-mass energies of 196 GeV. The combination of the results from the…

High Energy Physics - Phenomenology · Physics 2011-04-15 Andre Sopczak

After an introduction recalling the theoretical motivation for low energy (100 GeV to TeV scale) supersymmetry, this review describes the theory and experimental implications of the soft supersymmetry-breaking Lagrangian of the general…

High Energy Physics - Phenomenology · Physics 2014-11-17 D. J. H. Chung , L. L. Everett , G. L. Kane , S. F. King , J. Lykken , Lian-Tao Wang

We extend previous combinations of LEP and cosmological relic density constraints on the parameter space of the constrained MSSM, with universal input supersymmetry-breaking parameters, to large tan beta. We take account of the possibility…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Ellis , T. Falk , G. Ganis , K. A. Olive , M. Srednicki

We consider low-energy supersymmetric model with non-anomalous discrete R-symmetry. In such a model, to make the R-symmetry non-anomalous, new particles with gauge quantum numbers should be inevitably added to the particle content of the…

High Energy Physics - Phenomenology · Physics 2015-05-30 Masaki Asano , Takeo Moroi , Ryosuke Sato , Tsutomu T. Yanagida

New NLO b->sgamma calculations have become available using resummed radiative corrections. Using these calculations we perform a global fit of the supergravity inspired constrained minimal supersymmetric model (CMSSM). We find that the…

High Energy Physics - Phenomenology · Physics 2009-01-07 W. de Boer , M. Huber , A. V. Gladyshev , D. I. Kazakov

We explore the parameter space of 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 constrained…

High Energy Physics - Phenomenology · Physics 2009-09-29 J. Ellis , T. Falk , K. A. Olive , Y. Santoso

We review constraints on the minimal supersymmetric extension of the Standard Model (MSSM) coming from direct searches at accelerators such as LEP, indirect measurements such as b -> s gamma decay and the anomalous magnetic moment of the…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis , Keith Olive , Yudi Santoso