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We review the status of the phenomenology of light neutralinos in an effective Minimal Supersymmetric extension of the Standard Model (MSSM) at the electroweak scale, in light of new results obtained at the CERN Large Hadron Collider. First…

High Energy Physics - Phenomenology · Physics 2013-05-30 A. Bottino , N. Fornengo , S. Scopel

Some doubts have been expressed about low energy supersymmetry (SUSY) following the first run of the LHC. In this talk I will try to present a more upbeat view based on data, rather than theoretical expectations. In particular, I will make…

High Energy Physics - Phenomenology · Physics 2015-07-28 K. Kowalska , L. Roszkowski , E. M. Sessolo , S. Trojanowski , A. J. Williams

We investigate the current status of the light neutralino dark matter scenario within the minimal supersymmetric standard model (MSSM) taking into account latest results from the LHC. A discussion of the relevant constraints, in particular…

High Energy Physics - Phenomenology · Physics 2013-10-23 Lorenzo Calibbi , Jonas M. Lindert , Toshihiko Ota , Yasutaka Takanishi

A comparison is made between accelerator and direct detection constraints in constrained versions of the minimal supersymmetric standard model. Models considered are based on mSUGRA, where scalar and gaugino masses are unified at the GUT…

High Energy Physics - Phenomenology · Physics 2009-09-15 Keith A. Olive

We consider the Minimal Supersymmetric Standard Model (MSSM) with varying amounts of non-universality in the soft supersymmetry-breaking contributions to the Higgs scalar masses. In addition to the constrained MSSM (CMSSM) in which these…

High Energy Physics - Phenomenology · Physics 2014-11-20 Pearl Sandick

Non-universal boundary conditions in grand unified theories can lead to non-universal gaugino masses at the unification scale. In R-parity preserving theories the lightest supersymmetric particle is a natural candidate for the dark matter.…

High Energy Physics - Phenomenology · Physics 2009-09-29 Katri Huitu , Jari Laamanen , Sourov Roy

We study the possibilities for the indirect detection of dark matter in Split Supersymmetry from gamma-rays, positrons, and antiprotons. The most promising signal is the gamma-ray line, which may be observable at the next generation of…

High Energy Physics - Phenomenology · Physics 2009-11-10 Asimina Arvanitaki , Peter W. Graham

We discuss the potential impacts on the CMSSM of future LHC runs and possible electron-positron and higher-energy proton-proton colliders, considering searches for supersymmetry via MET events, precision electroweak physics, Higgs…

High Energy Physics - Phenomenology · Physics 2016-04-05 O. Buchmueller , M. Citron , J. Ellis , S. Guha , J. Marrouche , K. A. Olive , K. de Vries , Jiaming Zheng

The anomalous magnetic moment of the muon has recently been measured to be in conflict with the Standard Model prediction with an excess of 2.6 sigma. Taking this result as a measurement of the supersymmetric contribution, we find that at…

High Energy Physics - Phenomenology · Physics 2007-05-23 E. A. Baltz , P. Gondolo

The breaking of electroweak symmetry through renormalization group flow in models that have MSSM spectra is found to produce "well-mixed" neutralino dark matter with a relic density consistent with the WMAP data and elastic scattering cross…

High Energy Physics - Phenomenology · Physics 2015-06-15 Daniel Feldman , Pearl Sandick

We explore the dark matter and LHC implications of t-b-tau quasi Yukawa unification in the framework of supersymmetric models based on the gauge symmetry G=SU(4)_{c}\times SU(2)_{L}\times SU(2)_{R}. The deviation from exact Yukawa…

High Energy Physics - Phenomenology · Physics 2015-12-09 Qaisar Shafi , Sukru Hanif Tanyildizi , Cem Salih Un

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

Natural SUSY scenarios with a low value of the $\mu$ parameter, are characterised by a higgsino-like dark matter candidate, and a compressed spectrum for the lightest higgsinos. We explore the prospects for probing this scenario at the 13…

High Energy Physics - Phenomenology · Physics 2015-10-20 D. Barducci , A. Belyaev , A. Bharucha , W. Porod , V. Sanz

We analyse the effect of the compression of the dark matter due to the infall of baryons to the galactic center on the gamma-ray flux. In addition, we also consider the effect of non-universal supersymmetric soft terms. This analysis shows…

High Energy Physics - Phenomenology · Physics 2009-11-11 Y. Mambrini

Neutrino telescopes of kilometer size are currently being planned. They will be two or three orders of magnitude larger than presently operating detectors, but they will have a much higher muon energy threshold. We discuss the trade-off…

Astrophysics · Physics 2007-05-23 Lars Bergstrom , Joakim Edsjo , Paolo Gondolo

We outline the WIMP dark matter parameter space in the Constrained MSSM by performing a comprehensive statistical analysis that compares with experimental data predicted superpartner masses and other collider observables as well as a cold…

Astrophysics · Physics 2008-11-26 Roberto Trotta , Roberto Ruiz de Austri , Leszek Roszkowski

We present updated global fits of the constrained Minimal Supersymmetric Standard Model (cMSSM), including the most recent constraints from the ATLAS and CMS detectors at the LHC, as well as the most recent results of the XENON100…

High Energy Physics - Phenomenology · Physics 2012-01-20 G. Bertone , D. G. Cerdeno , M. Fornasa , R. Ruiz de Austri , C. Strege , R. Trotta

We consider the lightest supersymmetric particle (LSP), neutralino in minimal anomaly mediated supersymmetry breaking model (mAMSB) to be a possible candidate for weakly interacting massive particles (WIMP) or cold dark matter and…

High Energy Physics - Phenomenology · Physics 2013-06-28 Kamakshya Prasad Modak , Debasish Majumdar

We investigate the prospects of indirect searches for supersymmetric neutralino dark matter. Relic neutralinos gravitationally accumulate in the Sun and their annihilations produce high energy neutrinos. Muon neutrinos of this origin can be…

High Energy Physics - Phenomenology · Physics 2009-09-15 Vernon Barger , Francis Halzen , Dan Hooper , Chung Kao

We consider a model for neutralino dark matter candidates arising in anomaly-mediated supersymmetry breaking schemes, and examine its testability through the search for exotic cosmic rays produced by neutralino pair annihilations in the…

High Energy Physics - Phenomenology · Physics 2010-02-03 Piero Ullio