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We perform a likelihood analysis of the constraints from accelerator experiments and astrophysical observations on supersymmetric (SUSY) models with SU(5) boundary conditions on soft SUSY-breaking parameters at the GUT scale. The parameter…

As we anticipate the first results of the 2016 run, we assess the discovery potential of the LHC to `natural supersymmetry'. To begin with, we explore the region of the model parameter space that can be excluded with various centre-of-mass…

High Energy Physics - Phenomenology · Physics 2016-12-15 Jong Soo Kim , Krzysztof Rolbiecki , Roberto Ruiz , Jamie Tattersall , Torsten Weber

Supersymmetry (SUSY) addresses several problems of the Standard Model, such as the naturalness problem and gauge coupling unification, and can provide cosmologically viable dark matter candidates. SUSY must be broken at high energy scales…

High Energy Physics - Phenomenology · Physics 2024-11-15 Kirtiman Ghosh , Katri Huitu , Rameswar Sahu

Supersymmetric mass spectra within two variants of the seesaw mechanism, commonly known as type-II and type-III seesaw, are calculated using full 2-loop RGEs and minimal Supergravity boundary conditions. The type-II seesaw is realized using…

High Energy Physics - Phenomenology · Physics 2015-03-17 Martin Hirsch , Laslo Reichert , Werner Porod

We propose six new benchmark scenarios for Higgs boson searches in the Minimal Supersymmetric Standard Model. Our calculations follow the recommendations of the LHC Higgs Cross Section Working Group, and benefit from recent developments in…

The purpose of this review is to investigate what kind of physics can be extracted at the LHC, assuming a discovery is made in events with missing transverse momentum, as generically expected in supersymmetry (SUSY) with R-parity…

High Energy Physics - Phenomenology · Physics 2020-01-08 Konstantin T. Matchev , Filip Moortgat , Luc Pape

We have revisited the prospects of Supersymmetry(SUSY) searches at the LHC with 7 TeV energy along with the prediction of the discovery potential at 8 TeV energy assuming an integrated luminosity 5 $fb ^{-1}$ and 20 $\invfb$ with…

High Energy Physics - Phenomenology · Physics 2013-05-30 Rajdeep M. Chatterjee , Monoranjan Guchait , Dipan Sengupta

Presence of the light gravitino as dark matter candidate in a supersymmetric (SUSY) model opens up interesting collider signatures consisting of one or more hard photons together with multiple jets and missing transverse energy from the…

High Energy Physics - Phenomenology · Physics 2017-09-13 Juhi Dutta , Partha Konar , Subhadeep Mondal , Biswarup Mukhopadhyaya , Santosh Kumar Rai

The Standard Model of particle physics successfully describes the elementary particles and their interactions at low energies, up to 100 GeV. Beyond this scale lies the realm of new physics needed to remedy problems that arise at higher…

High Energy Physics - Experiment · Physics 2017-12-27 Othmane Rifki

Current ideas for SUPERSYMMETRY searches at the LHC are reviewed. We analyse the discovery prospects for various supersymmetric particles and describe recent ideas on the possibilities of detailed SUSY studies at the LHC. We also combine…

High Energy Physics - Experiment · Physics 2007-05-23 Michael Dittmar

Supersymmetric particles can be produced copiously at future colliders. From the high-precision data taken at e+e- linear colliders, TESLA in particular, and combined with results from LHC, and CLIC later, the low-energy parameters of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jan Kalinowski

For a long time, the minimal supersymmetric standard model (MSSM) with light masses for the supersymmetric states was considered as the most natural extension of the Standard Model of particle physics. Consequently, a valid approximation…

High Energy Physics - Phenomenology · Physics 2017-05-30 Florian Staub , Werner Porod

The requirement that SUSY should solve the hierarchy problem without undue fine-tuning imposes severe constraints on the new supersymmetric states. With the MSSM spectrum and soft SUSY breaking originating from universal scalar and gaugino…

High Energy Physics - Phenomenology · Physics 2015-05-27 S. Cassel , D. M. Ghilencea , S. Kraml , A. Lessa , G. G. Ross

We study the implications at the LHC for the minimal (least) version of the supersymmetric standard model. In this model supersymmetry is broken by gravity and extra gauge interactions effects, providing a spectrum similar in several…

High Energy Physics - Phenomenology · Physics 2014-04-15 J. de Blas , A. Delgado , B. Ostdiek

Supersymmetry (SUSY) is a complete and renormalisable candidate for an extension of the Standard Model. At an energy scale not too far above the electroweak scale it would solve the hierarchy problem of the SM Higgs boson, dynamically…

High Energy Physics - Experiment · Physics 2015-06-11 Philip Bechtle , Tilman Plehn , Christian Sander

We study SUSY signatures at the 7, 8 and 14 TeV LHC employing the 19-parameter, R-Parity conserving p(henomenological)MSSM, in the scenario with a neutralino LSP. Our results were obtained via a fast Monte Carlo simulation of the ATLAS SUSY…

High Energy Physics - Phenomenology · Physics 2015-03-11 M. Cahill-Rowley , J. L. Hewett , A. Ismail , T. G. Rizzo

This work presents a new inclusive search for supersymmetry (SUSY) by the ATLAS experiment at the LHC in proton-proton collisions at a center-of-mass energy sqrt(s) = 7 TeV in final states with jets, missing transverse momentum and one or…

High Energy Physics - Experiment · Physics 2013-06-25 ATLAS Collaboration

Given that it will take quite some time for the Large Hadron Collider (LHC) to reach its desired luminosity, it is important to investigate the most favorable scenario in which supersymmetry (SUSY) may be discovered at the early runs at the…

High Energy Physics - Phenomenology · Physics 2015-03-17 Subhaditya Bhattacharya , S. Nandi

The data from the first run of the LHC at 7 and 8 TeV, together with the information provided by other experiments such as precision electroweak measurements, flavour measurements, the cosmological density of cold dark matter and the direct…

High Energy Physics - Phenomenology · Physics 2015-06-18 John Ellis

We present the state-of-the-art of the effective field theory computation of the MSSM Higgs mass, improving the existing ones by including extra threshold corrections. We show that, with this approach, the theoretical uncertainty is within…

High Energy Physics - Phenomenology · Physics 2015-04-22 Javier Pardo Vega , Giovanni Villadoro