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There are many low-energy models of supersymmetry breaking parameters which are motivated by theoretical and experimental considerations. Here, we discuss some of the lesser-known theories of low-energy supersymmetry, and outline their…

In supersymmetric (SUSY) models with the gravitino being the lightest SUSY particle (LSP), the SUSY breaking scale (i.e., the gravitino mass) could be determined by measuring the lifetime of the next-to-lightest SUSY particle (NLSP).…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. Hamaguchi , S. Shirai , T. T. Yanagida

New Physics searches at the LHC have increased significantly lower bounds on unknown particle masses. This increases quite dramatically the tension in the interpretation of the data: low energy precision data which are predicted accurately…

High Energy Physics - Phenomenology · Physics 2012-03-06 Fred Jegerlehner

High precision measurements of electroweak observables at $e^\pm$ colliders indicate the existence of a light Higgs boson below the $W^\pm$ threshold. If such a fundamental scalar should be found in the near future it is important to fully…

High Energy Physics - Phenomenology · Physics 2008-11-26 Michael Melles

This report summarizes the progress in SUSY studies performed during the Extended ECFA/DESY Workshop since the TESLA TDR. Based on accurate future measurements of masses of SUSY particles and the determination of the couplings and mixing…

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

Searches for SUSY particles are the main physics focus of the ongoing Run IIa of the Tevatron. LEP results have constrained heavily the Minimal Supersymmetric Standard Model. In this paper the results obtained at LEP and the Tevatron Run I…

High Energy Physics - Phenomenology · Physics 2009-09-25 Anna Lipniacka

While SUSY particles, if they exist at the TeV-scale, will be discovered at the Tevatron or the LHC, the determination of the SUSY-breaking scenario and its free parameters will require additional information, e.g. from a future…

High Energy Physics - Phenomenology · Physics 2010-11-19 M. Klasen

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

High-energy colliders provide direct access to the energy frontier, allowing to search for new physics at scales as high as the machine's center-of-mass energy, perform precision measurements of the Standard Model (SM) parameters, including…

Accelerator Physics · Physics 2023-06-23 Anadi Canepa , Monica D'Onofrio

Littlest Higgs model predicts some extra particles beyond the Standard Model. Among them, an extra neutral gauge boson A_H is lightest and its mass could be a few hundred GeV. We study production and decay of A_H at future e^+ e^- inear…

High Energy Physics - Phenomenology · Physics 2009-11-10 Gi-Chol Cho , Aya Omote

Light higgsinos with mass ~100-400 GeV are well-motivated from naturalness considerations within supersymmetric models. However, at hadron colliders such as CERN LHC, they are rather difficult to search for due to the small visible energy…

High Energy Physics - Phenomenology · Physics 2025-09-24 Howard Baer , Vernon Barger , Natsumi Nagata , Dibyashree Sengupta

While LHC has discovered a very Standard Model-like Higgs boson of mass m_h~ 125 GeV, no solid signal for physics beyond the Standard Model has emerged so far at LHC or at WIMP seach experiments. For the case of weak scale supersymmetry…

High Energy Physics - Phenomenology · Physics 2020-12-30 Howard Baer , Vernon Barger , Shadman Salam , Dibyashree Sengupta , Kuver Sinha

The predictions for the mass of the light CP-even Higgs are investigated in the context of a simple extension of the Minimal Supersymmetric Standard Model where the baryon and lepton numbers are local gauge symmetries. This theory predicts…

High Energy Physics - Phenomenology · Physics 2012-05-04 Pavel Fileviez Perez

In supersymmetric extensions of the Standard Model, the observed particles come in fermion-boson pairs necessary for the realization of supersymmetry (SUSY). In spite of the expected abundance of super-partners for all the known particles,…

High Energy Physics - Theory · Physics 2021-04-13 Pedro D. Alvarez , Lucas Delage , Mauricio Valenzuela , Jorge Zanelli

We report on a study of the physics potential of linear $e^+e^-$ colliders. Although a linear collider (LC) would support a broad physics program, we focus on the contributions that could help elucidate the origin of electroweak symmetry…

Taking seriously phenomenological indications for supersymmetry, we have made a detailed study of unified minimal SUSY, including effects at the few percent level in a consistent fashion. We report here a general analysis without choosing a…

High Energy Physics - Phenomenology · Physics 2009-09-15 G. L. Kane , Chris Kolda , Leszek Roszkowski , James D. Wells

After a lightning review of current bounds on the masses of supersymmetric particles, we describe strategies that may be helpful for extracting signals from the production of squarks, gluinos or top squarks, and from associated…

High Energy Physics - Phenomenology · Physics 2007-05-23 Xerxes Tata

In this review we discuss constraints on minimal supersymmetric models of particle physics implied by the recent astrophysical observations of WMAP. Although the prospects of detecting supersymmetry increase and 90 percent of the available…

High Energy Physics - Phenomenology · Physics 2011-05-05 A. B. Lahanas , N. E. Mavromatos , D. V. Nanopoulos

We revisit the possibility of "visible sector" SUSY models: models which are straightforward renormalizable extensions of the Minimal Supersymmetric Standard Model (MSSM), where SUSY is broken at tree level. Models of this type were…

High Energy Physics - Phenomenology · Physics 2009-11-10 Piyush Kumar , Joseph D. Lykken

We discuss a phenomenological model that extends the minimal supersymmetric standard model to contain axions and their supersymmetric partner, the axino. In the supersymmetric DFSZ axion model, the axino has tree level couplings to the…

High Energy Physics - Phenomenology · Physics 2026-04-08 Gabe Hoshino , Kristin Dona , Keisuke Harigaya , David W. Miller , Jan T. Offermann , Bianca Pol , Benjamin Rosser