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Supersymmetry (SUSY) is an attractive extension of the Standard Model possibly solving many standing issues in particle physics and cosmology. The general purpose ATLAS detector at the Large Hadron Collider (LHC) is an experiment capable of…

High Energy Physics - Experiment · Physics 2009-05-29 Aleksej Koutsman

A search for supersymmetry in final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The data sample corresponds to an integrated luminosity of 4.98 inverse…

High Energy Physics - Experiment · Physics 2014-03-12 CMS Collaboration

We examine the first ATLAS Collaboration 8 TeV 5.8/fb supersymmetry (SUSY) multijet data observations in the context of No-Scale Flipped SU(5) with extra TeV-Scale vector-like flippon multiplets, dubbed F-SU(5), finding that the recent 8…

High Energy Physics - Phenomenology · Physics 2012-10-11 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

The ATLAS collaboration published supersymmetry limits based on up to about 4.7 \ifb data collected over the year 2011 from LHC runs at 7 TeV. These were mainly interpreted within restricted, particular or simplified models for…

High Energy Physics - Phenomenology · Physics 2013-06-12 Shehu S. AbdusSalam

We have examined the capability of the LHC, running at both 7 and 8 TeV, to explore the 19(20)-dimensional parameter space of the pMSSM with neutralino(gravitino) LSPs and soft masses up to 4 TeV employing the ATLAS SUSY analysis suite.…

High Energy Physics - Phenomenology · Physics 2012-12-03 M. W. Cahill-Rowley , J. L. Hewett , A. Ismail , T. G. Rizzo

The discovery/exclusion of Supersymmetric models for fundamental interactions of particles is one of the milestones targeted by the Large Hadron Collider (LHC), and in particular comprises of a large part of the physics program of the CMS…

High Energy Physics - Experiment · Physics 2015-06-04 S. A. Koay , CMS Collaboration

We examine the reach of the CERN LHC pp collider for supersymmetric models where the dominant contribution to soft SUSY breaking parameters arises from the superconformal anomaly. In the simplest viable anomaly mediated SUSY breaking (AMSB)…

High Energy Physics - Phenomenology · Physics 2009-10-31 Howard Baer , J. K. Mizukoshi , Xerxes Tata

There is hope that the Large Hadron Collider (LHC) at CERN will tell us about the fate of supersymmetry at the TeVscale. Therefore we might try to identify our expectations for the discovery of SUSY, especially in the first years of…

High Energy Physics - Theory · Physics 2009-02-02 Hans Peter Nilles

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

Searches for beyond-Standard Model physics scenarios, such as supersymmetry (SUSY), at the Large Hadron Collider (LHC) are frequently optimised on simplified models. After assuming particular particle production and decay processes,…

High Energy Physics - Phenomenology · Physics 2023-05-04 Melissa van Beekveld , Philip Grace , Anders Kvellestad , Adam Leinweber , Martin White

An inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of 8 TeV. The data sample corresponds to an integrated luminosity of…

High Energy Physics - Experiment · Physics 2013-10-30 CMS Collaboration

The electroweak fine-tuning measure Delta(EW) allows for correlated SUSY soft terms as are expected in any ultra-violet complete theory. Requiring no less than 3% electroweak fine-tuning implies upper bounds of about 360~GeV on all…

High Energy Physics - Phenomenology · Physics 2018-10-17 Howard Baer , Vernon Barger , James S. Gainer , Dibyashree Sengupta , Hasan Serce , Xerxes Tata

Different search strategies for supersymmetry have been employed by the LHC general-purpose experiments using early data. As proven by their early results, these strategies are promising, but raise the question of how well they will…

High Energy Physics - Phenomenology · Physics 2011-07-28 B. C. Allanach , A. J. Barr , A. Dafinca , C. Gwenlan

We present definite correlations between the CMS 5 \fb all-hadronic search employing the stransverse mass variable $M_{T2}$ and the ATLAS 5 \fb all-hadronic and multijet supersymmetry (SUSY) searches, suggesting the possibility that both…

High Energy Physics - Phenomenology · Physics 2012-06-04 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

Supersymmetry (SUSY) is one of the most relevant scenarios of new physics searched by the ATLAS experiment at the CERN Large Hadron Collider. In this writeup the principal search strategies employed by ATLAS are outlined and the most recent…

High Energy Physics - Experiment · Physics 2019-08-13 Vasiliki A. Mitsou

The results of a search for new physics in final states with photons and missing transverse energy are reported. The study is based on a sample of proton-proton collisions collected at a center-of-mass energy of 13 TeV with the CMS detector…

High Energy Physics - Experiment · Physics 2017-05-11 CMS Collaboration

The searches for supersymmetric particles by the four LEP experiments, ALEPH, DELPHI, L3, OPAL, have been made for many different theoretical models and phenomenological scenarios. Since no significant signs of a SUSY signal have been…

High Energy Physics - Experiment · Physics 2007-05-23 S. Ask

After completion of the LHC8 run in 2012, the plan is to upgrade the LHC for operation close to its design energy sqrt{s}=14 TeV, with a goal of collecting hundreds of fb^{-1} of integrated luminosity. The time is propitious to begin…

High Energy Physics - Phenomenology · Physics 2013-05-30 Howard Baer , Vernon Barger , Andre Lessa , Xerxes Tata

We present the first search for supersymmetry (SUSY) in Zgamma final states with large missing transverse energy using data corresponding to an integrated luminosity of 6.2 fb-1 collected with the D0 experiment in ppbar collisions at…

High Energy Physics - Experiment · Physics 2013-05-30 D0 Collaboration

The most recent CMS results from a search for supersymmetry (SUSY) with a compressed mass spectrum in leptonic final states will be presented. The search is targeting signatures with missing transverse momentum and two or three low-momentum…

High Energy Physics - Experiment · Physics 2021-11-30 Ioanna Papavergou , Emmanouil Vourliotis
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