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Related papers: How Constrained is the cMSSM?

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The constrained minimal supersymmetric standard model with mu>0 supplemented by an `asymptotic' Yukawa coupling quasi-unification condition, which allows an acceptable b-quark mass, is reinvestigated. Imposing updated constraints from the…

High Energy Physics - Phenomenology · Physics 2015-03-19 N. Karagiannakis , G. Lazarides , C. Pallis

We investigate the possibilities for constraining tan beta within the MSSM by combining the theoretical result for the upper bound on the lightest Higgs-boson mass as a function of tan beta with the informations from the direct experimental…

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

If the minimal supersymmetric standard model (MSSM) is the only new physics around the TeV-scale, it has to account for the entire dark matter relic density, or else it will cease to be `minimal'. We use this expectation to obtain the best…

High Energy Physics - Phenomenology · Physics 2017-11-27 Arpan Kar , Sourav Mitra , Biswarup Mukhopadhyaya , Tirthankar Roy Choudhury

Recent LHC data significantly extend the exclusion limits for supersymmetric particles, particularly in the jets plus missing transverse momentum channels. The most recent such data have so far been interpreted by the experiment in only two…

High Energy Physics - Phenomenology · Physics 2015-05-30 B. C. Allanach , T. J. Khoo , K. Sakurai

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…

High Energy Physics - Phenomenology · Physics 2009-01-22 Brian Dudley , Christopher Kolda

The recent WMAP data provide a rather restricted range of the Cold Dark Matter (CDM) density $ \Omega_{CDM} h^2 $ of unprecedented accuracy. We combine these new data along with data from BNL E821 experiment measuring $ {(g_{\mu}-2)}$, $…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. B. Lahanas , D. V. Nanopoulos

A consistent theoretical description of physics at high energies requires an assessment of vacuum stability in either the Standard Model or any extension of it. Especially supersymmetric extensions allow for several vacua and the choice of…

High Energy Physics - Phenomenology · Physics 2016-08-26 Wolfgang Gregor Hollik

We provide an up-to-date analysis of the parameter space of the minimal supergravity model (mSUGRA). Novel features include the new central value of the top quark mass, an improved calculation of the masses of the supersymmetric particles…

High Energy Physics - Phenomenology · Physics 2010-02-03 Abdelhak Djouadi , Manuel Drees , Jean-Loic Kneur

The ATLAS and CMS experiments did not find evidence for Supersymmetry using close to 5/fb of published LHC data at a center-of-mass energy of 7 TeV. We combine these LHC data with data on B_s -> mu mu (LHCb experiment), the relic density…

High Energy Physics - Phenomenology · Physics 2012-10-08 C. Beskidt , W. de Boer , D. I. Kazakov , F. Ratnikov

In the present work we search for renormalization group invariant relations among the various massless and massive parameters of the Minimal Supersymmetric Standard Model. We find that indeed several of the previously free parameters of the…

High Energy Physics - Phenomenology · Physics 2018-09-26 S. Heinemeyer , M. Mondragon , N. Tracas , G. Zoupanos

In view of the imminent start of the LHC experimental programme, we use the available indirect experimental and cosmological information to estimate the likely range of parameters of the constrained minimal supersymmetric extension of the…

High Energy Physics - Phenomenology · Physics 2009-02-10 O. Buchmueller , R. Cavanaugh , A. De Roeck , J. R. Ellis , H. Flaecher , S. Heinemeyer , G. Isidori , K. A. Olive , P. Paradisi , F. J. Ronga , G. Weiglein

Recent work has shown that the Constrained Minimal Supersymmetric Standard Model (CMSSM) can possess several distinct solutions for certain values of its parameters. The extra solutions were not previously found by public supersymmetric…

High Energy Physics - Phenomenology · Physics 2014-02-24 B. C. Allanach , Damien P. George , Benjamin Nachman

We revisit the viability of the CMSSM, searching for regions of parameter space that yield a neutralino dark matter density compatible with Planck measurements, as well as LHC constraints including sparticle searches and the mass of the…

High Energy Physics - Phenomenology · Physics 2023-04-12 John Ellis , Keith A. Olive , Vassilis C. Spanos , Ioanna D. Stamou

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 reexamine the constrained version of the Next-to-Minimal Supersymmetric Standard Model with semi universal parameters at the GUT scale (CNMSSM). We include constraints from collider searches for Higgs and SUSY particles, upper bound on…

High Energy Physics - Phenomenology · Physics 2009-01-16 G. Belanger , C. Hugonie , A. Pukhov

Measurements at low energies provide interesting indirect information about masses of particles that are (so far) too heavy to be produced directly. Motivated by recent progress in consistently and rigorously calculating electroweak…

High Energy Physics - Phenomenology · Physics 2008-11-26 O. Buchmueller , R. Cavanaugh , A. De Roeck , S. Heinemeyer , G. Isidori , P. Paradisi , F. J. Ronga , A. M. Weber , G. Weiglein

We analyze the parametric space of the constrained minimal supersymmetric standard model with mu>0 supplemented by a generalized asymptotic Yukawa coupling quasi-unification condition which yields acceptable masses for the fermions of the…

High Energy Physics - Phenomenology · Physics 2015-10-28 N. Karagiannakis , G. Lazarides , C. Pallis

Indirect information about the possible scale of supersymmetry (SUSY) breaking is provided by B-physics observables (BPO) as well as electroweak precision observables (EWPO). We combine the constraints imposed by recent measurements of the…

High Energy Physics - Phenomenology · Physics 2009-01-06 J. Ellis , S. Heinemeyer , K. A. Olive , A. M. Weber , G. Weiglein

We update previous frequentist analyses of the CMSSM and NUHM1 parameter spaces to include the public results of searches for supersymmetric signals using ~1 /fb of LHC data recorded by ATLAS and CMS and ~0.3/fb of data recorded by LHCb in…

In the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM) we discuss the impact of the recent experimental information, especially from E821 Brookhaven experiment on $g_{\mu}-2$ along with the light Higgs boson mass…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. B. Lahanas , D. V. Nanopoulos , V. C. Spanos