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The supersymmetric particles (sparticles) belonging exclusively to the electroweak sector of the minimal supersymmetric standard model (MSSM) may hold the key to the observed dark matter relic density in the universe even if all strongly…

High Energy Physics - Phenomenology · Physics 2013-10-02 Arghya Choudhury , Amitava Datta

We explore the MSSM with 9 free parameters (p9MSSM) that have been selected as a minimum set that allows an investigation of neutralino dark matter and collider signatures while maintaining consistency with several constraints. These…

High Energy Physics - Phenomenology · Physics 2013-10-04 Andrew Fowlie , Kamila Kowalska , Leszek Roszkowski , Enrico Maria Sessolo , Yue-Lin Sming Tsai

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

Both ATLAS and CMS have published results of SUSY searches putting limits on SUSY parameters and masses. A non-discovery of SUSY in the next two years would push these limits further. On the other hand, precision data of low energy…

High Energy Physics - Phenomenology · Physics 2011-05-30 P. Bechtle , K. Desch , H. Dreiner , M. Kramer , B. O'Leary , C. Robens , B. Sarrazin , P. Wienemann

We have studied Electroweak Symmetry Breaking (EWSB) fine-tuning in the context of two unified Supersymmetry scenarios: the Constrained Minimal Supersymmetric Model (CMSSM) and models with Non-Universal Higgs Masses (NUHM), in light of…

High Energy Physics - Phenomenology · Physics 2015-05-30 Stephen Amsel , Katherine Freese , Pearl Sandick

We present new global fits of the cMSSM, including LHC 1/fb integrated luminosity SUSY exclusion limits, recent LHC 5/fb constraints on the mass of the Higgs boson and XENON100 direct detection data. Our analysis fully takes into account…

High Energy Physics - Phenomenology · Physics 2015-06-03 C. Strege , G. Bertone , D. G. Cerdeno , M. Fornasa , R. Ruiz de Austri , R. Trotta

We analyze the implications for the status and prospects of supersymmetry of the Higgs discovery and the last XENON data. We focus mainly, but not only, on the CMSSM and NUHM models. Using a Bayesian approach we determine the distribution…

High Energy Physics - Phenomenology · Physics 2015-06-12 Maria Eugenia Cabrera , J. Alberto Casas , Roberto Ruiz de Austri

The realization that supersymmetry (SUSY), if softly broken at the weak scale, can stabilize the Higgs sector led many authors to explore the role it may play in particle physics. It was widely anticipated that superpartners would reveal…

High Energy Physics - Phenomenology · Physics 2020-12-30 Xerxes Tata

New results which correlate SUSY dark matter with LHC signals are presented, and a brief review of recent developments in supersymmetric and hidden sector dark matter is given. It is shown that the direct detection of dark matter is very…

High Energy Physics - Phenomenology · Physics 2009-02-02 Daniel Feldman , Zuowei Liu , Pran Nath

Supersymmetry (SUSY) provides elegant solutions to several problems in the Standard Model and searches for SUSY particles are an important component of the LHC physics program. The latest results from electroweak and strong SUSY searches…

High Energy Physics - Experiment · Physics 2023-06-28 Francesco Giuseppe Gravili

As is well known, the search for and eventual identification of dark matter in supersymmetry requires a simultaneous, multi-pronged approach with important roles played by the LHC as well as both direct and indirect dark matter detection…

High Energy Physics - Phenomenology · Physics 2015-03-18 Matthew Cahill-Rowley , Randy Cotta , Alex Drlica-Wagner , Stefan Funk , JoAnne Hewett , Ahmed Ismail , Tom Rizzo , Matthew Wood

An electroweak (EW) sector of the Minimal Supersymmetric Standard Model (MSSM) with masses of a few hundred GeV can account for variety of experimental data, assuming the lightest neutralino to be the lightest supersymmetric (SUSY)…

High Energy Physics - Phenomenology · Physics 2022-01-11 Manimala Chakraborti , Sven Heinemeyer , Ipsita Saha

Weak scale supersymmetry has a generic problem of fine-tuning in reproducing the correct scale for electroweak symmetry breaking. The problem is particularly severe in the minimal supersymmetric extension of the standard model (MSSM). We…

High Energy Physics - Phenomenology · Physics 2009-09-29 Ryuichiro Kitano , Yasunori Nomura

In the very early stages of LHC running, uncertainties in detector performance will lead to large ambiguities in jet, electron and photon energy measurements, along with inferred missing transverse energy. However, muon detection should be…

High Energy Physics - Phenomenology · Physics 2009-11-13 Howard Baer , Andre Lessa , Heaya Summy

If supersymmetry (SUSY) has a compressed spectrum then the current mass limits from the LHC can be drastically reduced. We consider a possible 'worst case' scenario where the gluino and/or squarks are degenerate with the lightest SUSY…

High Energy Physics - Phenomenology · Physics 2015-06-05 Herbi K. Dreiner , Michael Krämer , Jamie Tattersall

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 ATLAS and CMS collaborations have reported an excess of events in the \gamma\gamma, ZZ^*\to 4\ell and WW^* search channels at an invariant mass m \simeq 125 GeV, which could be the first evidence for the long-awaited Higgs boson. We…

High Energy Physics - Phenomenology · Physics 2013-05-30 Howard Baer , Vernon Barger , Azar Mustafayev

Weak scale supersymmetry is a highly motivated extension of the Standard Model that has a strong degree of support from data. It provides several viable dark matter candidates: the lightest neutralino (a WIMP), the gravitino, and the…

High Energy Physics - Phenomenology · Physics 2009-12-07 Howard Baer

In the post-LHC8 era, it is perceived that what is left of SUSY model parameter space is highly finetuned in the EW sector (EWFT). We discuss how conventional measures overestimate EWFT in SUSY theory. Radiatively-driven natural SUSY (RNS)…

High Energy Physics - Phenomenology · Physics 2015-06-17 Howard Baer

Supersymmetric models with low electroweak fine-tuning are more prevalent on the string landscape than fine-tuned models. We assume a fertile patch of landscape vacua containing the minimal supersymmetric standard model (MSSM) as a…

High Energy Physics - Phenomenology · Physics 2023-12-22 Juhi Dutta
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