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We present a focused study of a predictive unified model whose measurable consequences are immediately relevant to early discovery prospects of supersymmetry at the LHC. ATLAS and CMS have released their analysis with 35~pb$^{-1}$ of data…

High Energy Physics - Phenomenology · Physics 2011-07-28 Daniel Feldman , Katherine Freese , Pran Nath , Brent D. Nelson , Gregory Peim

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…

High Energy Physics - Phenomenology · Physics 2013-06-25 Kamila Kowalska , Shoaib Munir , Leszek Roszkowski , Enrico Maria Sessolo , Sebastian Trojanowski , Yue-Lin Sming Tsai

The constrained Next-to-Minimal Supersymmetric Standard Model (cNMSSM) with mSugra-like boundary conditions at the GUT scale implies a singlino-like LSP with a mass just a few GeV below a stau NLSP. Hence, most of the squark/gluino decay…

High Energy Physics - Phenomenology · Physics 2011-02-03 Ulrich Ellwanger , Alice Florent , Dirk Zerwas

In the framework of the MSSM the non-universal boundary conditions of soft SUSY breaking parameters are considered. Taking as input the top, bottom and Z-boson masses, the values of the gauge couplings at the EW scale and the infrared…

High Energy Physics - Phenomenology · Physics 2011-01-27 S. Codoban , M. Jurcisin , D. Kazakov

We analyze the implications of several recent cosmological and experimental measurements for the mass spectra of the Constrained MSSM (CMSSM). We compute the relic abundance of the neutralino and compare the new cosmologically expected and…

High Energy Physics - Phenomenology · Physics 2009-11-07 Leszek Roszkowski , Roberto Ruiz de Austri , Takeshi Nihei

We discuss the implications of the excesses in LHC Higgs boson searches on the gauge mediated supersymmetric standard model, for the mass range 120-140\,GeV. We find that a relatively heavy lightest Higgs boson mass in this range can be…

High Energy Physics - Phenomenology · Physics 2011-08-18 Jason L. Evans , Masahiro Ibe , Tsutomu T. Yanagida

The discovery of a relatively heavy Standard Model (SM) -like Higgs boson challenges naturalness of the minimal supersymmetric standard model (MSSM) from both Higgs and dark matter (DM) sectors. We study these two aspects in the MSSM…

High Energy Physics - Phenomenology · Physics 2015-06-17 Jun Guo , Zhaofeng Kang , Tianjun Li , Yandong Liu

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…

High Energy Physics - Phenomenology · Physics 2015-06-03 S. F. King , M. Muhlleitner , R. Nevzorov

We discuss the phenomenology of charged Higgs bosons in the MSSM with minimal flavor violation. In addition to the constrained MSSM (CMSSM) with universal soft supersymmetry breaking mass parameters at the GUT scale, we explore…

High Energy Physics - Phenomenology · Physics 2009-02-18 D. Eriksson , F. Mahmoudi , O. Stål

Neutral Higgs bosons of the Standard Model (SM) and the Minimal Supersymmetric Standard Model (MSSM) were searched for in the data collected in 1999 by the DELPHI experiment at centre-of-mass energies between 191.6 and 201.7 GeV with a…

High Energy Physics - Experiment · Physics 2008-11-26 The DELPHI Collaboration , J. Abdallah

In the context of minimal supersymmetric standard model (MSSM), we discuss the possibility of the lightest Higgs boson with mass $M_h = 98 $ GeV to be consistent with the $2.3\sigma$ excess observed at the LEP in the decay mode $e^+e^- \to…

High Energy Physics - Phenomenology · Physics 2016-04-13 Biplob Bhattacherjee , Manimala Chakraborti , Amit Chakraborty , Utpal Chattopadhyay , Dilip Kumar Ghosh

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

In this talk we briefly review the current CDMS/XENON constraints on the neutralino dark matter in three popular supersymmetric models: the minimal (MSSM), the next-to-minimal (NMSSM) and the nearly minimal (nMSSM). The constraints from the…

High Energy Physics - Phenomenology · Physics 2011-08-05 Jin Min Yang

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

The hMSSM is a special parameterization of the minimal supersymmetric extension of the Standard Model (MSSM) in which the mass of the lightest Higgs boson is automatically set to the LHC measured value, $M_h\!\!=\!\! 125$\,GeV, by adjusting…

High Energy Physics - Phenomenology · Physics 2023-05-31 Giorgio Arcadi , Abdelhak Djouadi , Hong-Jian He , Jean-Loic Kneur , Rui-Qing Xiao

We analyze the constrained minimal supersymmetric standard model with mu>0 supplemented by a generalized `asymptotic' Yukawa coupling quasi-unification condition, which allows an acceptable b-quark mass. We impose constraints from the cold…

High Energy Physics - Phenomenology · Physics 2013-05-14 N. Karagiannakis , G. Lazarides , C. Pallis

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,…

High Energy Physics - Phenomenology · Physics 2016-03-23 J. Kawamura , Y. Omura

Using the chargino-neutralino and slepton search results from the LHC in conjunction with the WMAP/PLANCK and $(g-2)_{\mu}$ data, we constrain several generic pMSSM models with decoupled strongly interacting sparticles, heavier Higgs bosons…

High Energy Physics - Phenomenology · Physics 2014-07-07 Manimala Chakraborti , Utpal Chattopadhyay , Arghya Choudhury , Amitava Datta , Sujoy Poddar

Recently, it has been pointed out that two different excesses of events observed at LEP could be interpreted as the CP-even Higgs bosons of the MSSM with masses of approximately 98 and 114 GeV. If this is the case, the entire MSSM Higgs…

High Energy Physics - Phenomenology · Physics 2008-11-26 Dan Hooper , Tilman Plehn

The LEP experiments give a lower bound on the neutralino mass of about 46 GeV which, however, relies on a supersymmetric grand unification relation. Dropping this assumption, the experimental lower bound on the neutralino mass vanishes…

High Energy Physics - Phenomenology · Physics 2011-05-10 John A. Conley , Herbert K. Dreiner , Peter Wienemann
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