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Supersymmetry broken geometrically in extra dimensions naturally leads to a nearly degenerate spectrum for superparticles, ameliorating the bounds from the current searches at the LHC. We present a minimal such model with a single extra…

High Energy Physics - Phenomenology · Physics 2015-03-20 Hitoshi Murayama , Yasunori Nomura , Satoshi Shirai , Kohsaku Tobioka

The concept of supersymmetry in a quantum mechanical system is extended, permitting the recognition of many more supersymmetric systems, including very familiar ones such as the free particle. Its spectrum is shown to be supersymmetric,…

Quantum Physics · Physics 2009-11-10 A. R. P. Rau

This is the written version of a talk given by S.K. at the $10^{th}$ International Conference on High Energy and Astroparticle, Constantine, Algeria. We briefly review the Standard Model (SM) and the major evidences and main direction of…

High Energy Physics - Phenomenology · Physics 2020-05-19 Dris Boubaa , Gaber Faisel , Shaaban Khalil

After the observation in 2012 of a new scalar particle closely resembling the Higgs boson of the Standard Model of particle physics, there is a general consensus that there must be Physics Beyond the Standard Model, with present experiments…

High Energy Physics - Phenomenology · Physics 2025-09-24 Rafael Boto

The Standard Model (SM) of particle physics provides a very successful description of fundamental particles and their interactions but it is incomplete, as neutrino masses, dark matter and the baryon asymmetry of the Universe indicate. In…

More than twenty years have passed since the threads of the `proper time formalism' in covariant classical and quantum mechanics were brought together to construct a canonical formalism for the relativistic mechanics of many particles.…

High Energy Physics - Theory · Physics 2016-09-06 M. C. Land , L. P. Horwitz

Recently, a conceptually new physics beyond the Standard Model (SM), unparticle, has been proposed, where a hidden conformal sector is coupled to the SM sector through higher dimensional operators. In this setup, we investigate unparticle…

High Energy Physics - Phenomenology · Physics 2008-11-26 Tatsuru Kikuchi , Nobuchika Okada , Michihisa Takeuchi

The structure of the MSSM is reviewed. We first motivate the particle content of the theory by examining the quantum numbers of the known standard model particles and by the requirement of anomaly cancellation. Once the particle content is…

High Energy Physics - Phenomenology · Physics 2009-09-17 Csaba Csaki

Use of supergravity equations in astronomy and late-universe cosmology is often criticized on three grounds: (i) phenomenological success usually depends on the supergravity form for the scalar potential applying at the relevant energies;…

High Energy Physics - Theory · Physics 2022-09-07 C. P. Burgess , F. Quevedo

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

Effective Supersymmetry is presented as a theory of physics above the electroweak scale which has significant theoretical advantages over both the standard model and the Minimal Supersymmetric Standard Model (MSSM). The theory is…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. G. Cohen , D. B. Kaplan , A. E. Nelson

A heavy supersymmetric spectrum at the Minimal Supersymmetric Standard Model is considered and the decoupling from the low energy electroweak scale is analyzed. A formal and partial proof of decoupling of supersymmetric particles in the…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Dobado , M. J. Herrero , S. Penaranda

The prospects for detecting a candidate supersymmetric dark matter particle at the LHC are reviewed, and compared with the prospects for direct and indirect searches for astrophysical dark matter. The discussion is based on a frequentist…

High Energy Physics - Phenomenology · Physics 2015-05-28 John Ellis

Models with classical scale symmetry, which feature radiative symmetry breaking, generically lead to a supercooled first-order phase transition in the early Universe resulting in a strong gravitational-wave signal, potentially observable by…

High Energy Physics - Phenomenology · Physics 2024-12-03 Bartosz Sojka , Bogumila Swiezewska

The Standard Model (SM) of particle physics, comprised of the unified electro-weak (EW) and Quantum Chromodynamic (QCD) theories, accurately explains almost all experimental results related to the micro-world, and has made a number of…

High Energy Physics - Phenomenology · Physics 2021-03-01 Shenjian Chen , Stephen Lars Olsen

ATLAS and CMS have been performing a large number of searches for physics beyond the Standard Model (BSM). In particular results of supersymmetry (SUSY) searches are typically interpreted in the context of simplified models. While mass…

High Energy Physics - Phenomenology · Physics 2017-10-02 Ursula Laa

I discuss some central issues in particle physics which are potentially relevant to cosmology. I first briefly review the present (glorious) experimental status of the Standard Model, emphasizing that it provides a firm foundation both for…

High Energy Physics - Phenomenology · Physics 2007-05-23 Frank Wilczek

We present a general procedure to decompose Beyond the Standard Model (BSM) collider signatures presenting a Z2 symmetry into Simplified Model Spectrum (SMS) topologies. Our method provides a way to cast BSM predictions for the LHC in a…

High Energy Physics - Phenomenology · Physics 2014-06-19 Sabine Kraml , Suchita Kulkarni , Ursula Laa , Andre Lessa , Wolfgang Magerl , Doris Proschofsky-Spindler , Wolfgang Waltenberger

I define the Standard Supersymmetric Model (SSM) as the minimal supersymmetric extension ofthe Standard Model with gauge coupling unification and universal soft supersymmetry breaking at the unification scale. This well-defined model has a…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Kelley

Two different approaches are formulated to analyze two-dimensional quantum models which are not amenable to standard separation of variables. Both methods are essentially based on supersymmetrical second order intertwining relations and…

Mathematical Physics · Physics 2012-04-13 Mikhail V. Ioffe