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Current analyses of the LHC data put stringent bounds on strongly interacting supersymmetric particles, restricting the masses of squarks and gluinos to be above the TeV scale. However, the supersymmetric electroweak sector is poorly…

High Energy Physics - Phenomenology · Physics 2018-12-12 Marcela Carena , James Osborne , Nausheen R. Shah , Carlos E. M. Wagner

If Supersymmetry would manifest itself at a low mass scale it might be found already in the early phase of the LHC operation. Generic signatures for Supersymmetry in pp-collisions consist of high jet multiplicity, large missing transverse…

High Energy Physics - Experiment · Physics 2019-08-15 Michele Pioppi

Contrary to the general trend of looking for new physics at energies beyond the current reach of the Large Hadron Collider (LHC), this article proposes a strategy to look for light new physics via a meticulous study of well known and…

High Energy Physics - Phenomenology · Physics 2024-10-22 Dibyashree Sengupta

Final states including leptons are most promising to detect early signs of new physics processes when the Large Hadron Collider will start proton-proton collisions at the centre of mass energy of 14\TeV. The reach for Supersymmetry and…

High Energy Physics - Experiment · Physics 2011-11-09 M. Kazana

We propose a rigorous and effective way to compare experimental and theoretical histograms, incorporating the different sources of statistical and systematic uncertainties. This is a useful tool to extract as much information as possible…

High Energy Physics - Phenomenology · Physics 2015-03-19 M. E. Cabrera , J. A. Casas , V. A. Mitsou , R. Ruiz de Austri , J. Terron

The discovery and exploration of Supersymmetry in a model-independent fashion will be a daunting task due to the large number of soft-breaking parameters in the MSSM. In this paper, we explore the capability of the ATLAS detector at the LHC…

High Energy Physics - Phenomenology · Physics 2011-07-26 John A. Conley , James S. Gainer , JoAnne L. Hewett , My Phuong Le , Thomas G. Rizzo

The discovery potential of the LHC is investigated for the minimal anomaly-mediated supersymmetry breaking (mAMSB) scenario, using the ATLAS fast detector simulator, including track reconstruction and particle identification. Generic…

High Energy Physics - Phenomenology · Physics 2007-11-27 A. J. Barr , B. C. Allanach , C. G. Lester , M. A. Parker , P. Richardson

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 consider the potentials of the LHC and a linear e^+e^- collider (LC) for discovering supersymmetric particles in variants of the MSSM with soft supersymmetry-breaking mass parameters constrained to be universal at the GUT scale (CMSSM)…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis , Keith A. Olive , Pearl Sandick

The prospects for the search of the Standard Model Higgs boson with the CMS experiment at the LHC are presented. The analyses rely on a full simulation of the detector response and emphasis is put on explicit strategies for the measurement…

High Energy Physics - Experiment · Physics 2009-10-20 Tommaso Dorigo

We use ATLAS and CMS searches in the mono-jet + missing energy and mono-photon + missing energy final state to set limits on the couplings of dark matter to quarks and gluons. Working in an effective field theory framework we compare…

High Energy Physics - Phenomenology · Physics 2014-06-10 Patrick J. Fox , Roni Harnik , Joachim Kopp , Yuhsin Tsai

In the companion paper it was shown that there are six observables in $gg\to t \bar t \to (b \bar b c) (\bar b \ell \bar \nu)$ that can be used to reveal the presence of new physics (NP) in $t \to b \bar b c$. In the present paper we…

High Energy Physics - Phenomenology · Physics 2015-10-02 Pratishruti Saha , Ken Kiers , David London , Alejandro Szynkman

Supersymmetric theories with an R-parity generally yield a striking missing energy signature, with cascade decays concluding in a neutralino that escapes the detector. In theories where R-parity is broken the missing energy is replaced with…

High Energy Physics - Phenomenology · Physics 2015-06-05 Joshua T. Ruderman , Tracy R. Slatyer , Neal Weiner

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 make a systematic and comparative study for the LHC and ILC for the electroweakino searches in the Minimal Supersymmetric Standard Model. We adopt a general bottom-up approach and scan over the parameter regions for all the three cases…

High Energy Physics - Phenomenology · Physics 2013-10-01 Mikael Berggren , Tao Han , Jenny List , Sanjay Padhi , Shufang Su , Tomohiko Tanabe

We argue that combining just a handful of searches for new physics at Run I of the LHC is sufficient to exclude most supersymmetric extensions of the Standard Model in which the gluino is kinematically accessible and the spectrum is…

High Energy Physics - Phenomenology · Physics 2015-06-17 Jared A. Evans , Yevgeny Kats , David Shih , Matthew J. Strassler

If supersymmetry (SUSY) exists in nature and is a solution to the hierarchy problem then it should be detectable at the TeV energy scale which the large hadron collider (LHC) is now exploring. One of the main goals of the LHC is the…

High Energy Physics - Phenomenology · Physics 2011-11-08 S. S. AbdusSalam

We demonstrate the utility of leptons which fail standard isolation criteria in searches for new physics at the LHC. Such leptons can arise in any event containing a highly boosted particle which decays to both leptons and quarks. We begin…

High Energy Physics - Phenomenology · Physics 2015-05-14 Christopher Brust , Petar Maksimovic , Alice Sady , Prashant Saraswat , Matthew T. Walters , Yongjie Xin

The ATLAS and CMS experiments at LHC have great physics potential in discovering many possible new particles, from Standard Model (SM) Higgs boson to supersymmetric (SUSY) and other beyond the SM new particles over a very large mass range…

High Energy Physics - Experiment · Physics 2007-05-23 Yongsheng Gao

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