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For the case of the MSSM and the most general form of the NMSSM (GNMSSM) we determine the reduction in the fine tuning that follows from allowing gaugino masses to be non-degenerate at the unification scale, taking account of the LHC8…

High Energy Physics - Phenomenology · Physics 2015-06-16 Anna Kaminska , Graham G. Ross , Kai Schmidt-Hoberg

After briefly reviewing the nonperturbative dynamics of N=1 supersymmetric field theories, soft SUSY breaking mass terms are introduced into the SUSY gauge theories and their effects on gauge symmetry breaking pattern are studied. For…

High Energy Physics - Phenomenology · Physics 2016-09-06 N. Sakai

Characteristic examples are presented of scenarios of particle production and decay in supersymmetry models in which the supersymmetry breaking is transmitted to the observable world via gauge interactions. The cases are chosen to…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. Hinchliffe , F. E. Paige

In case of the discovery of supersymmetry at the LHC, the goal will be to identify the underlying theory, its fundamental parameters, and the masses of SUSY particles. We followed here the approach to reconstruct the decay chains in SUSY…

High Energy Physics - Phenomenology · Physics 2009-11-16 Christian Autermann , Benedikt Mura , Christian Sander , Hannes Schettler , Peter Schleper

We elaborate on a recent study of a model of supersymmetry breaking we proposed recently, in the presence of a tunable positive cosmological constant, based on a gauged shift symmetry of a string modulus, external to the Standard Model (SM)…

High Energy Physics - Phenomenology · Physics 2016-02-17 Ignatios Antoniadis , Rob Knoops

Many techniques exist to reconstruct New Physics masses from LHC data, though these tend to either require high luminosity O(100) fb^-1, or an accurate measurement of missing transverse energy (MET) which may not be available in the early…

High Energy Physics - Phenomenology · Physics 2010-07-05 Z. Kang , N. Kersting , M. White

The minimal supersymmetric standard model with soft breaking has a large landscape of supersymmetric particle mass hierarchies. This number is reduced significantly in well-motivated scenarios such as minimal supergravity and alternatives.…

High Energy Physics - Phenomenology · Physics 2008-11-26 Daniel Feldman , Zuowei Liu , Pran Nath

We study an attractive scenario, "Sleptonic SUSY", which reconciles the $125$ GeV Higgs scalar and the non-observation of superpartners thus far with potentially pivotal roles for slepton phenomenology: providing viable ongoing targets for…

High Energy Physics - Phenomenology · Physics 2022-09-22 Kaustubh Agashe , Majid Ekhterachian , Zhen Liu , Raman Sundrum

We begin a systematic study of how gaugino mass unification can be probed at the CERN Large Hadron Collider (LHC) in a quasi-model independent manner. As a first step in that direction we focus our attention on the theoretically…

High Energy Physics - Phenomenology · Physics 2010-04-15 Baris Altunkaynak , Phillip Grajek , Michael Holmes , Gordon Kane , Brent D. Nelson

We apply a model-independent, agnostic approach to the collider phenomenology of supersymmetry (SUSY), in which all mass parameters are taken as free inputs at the weak scale. We consider the gauginos, higgsinos, and the first two…

High Energy Physics - Phenomenology · Physics 2010-12-03 Partha Konar , Konstantin T. Matchev , Myeonghun Park , Gaurab K. Sarangi

SUSY searches at the LHC as well as the 126 GeV Higgs boson indicate that superparticles, especially squarks and gluinos, are not so light as we expected. It is important to investigate SUSY searches which do not rely on the colored…

High Energy Physics - Phenomenology · Physics 2013-05-06 Sho Iwamoto

Rather general considerations from the string theory landscape suggest a statistical preference within the multiverse for soft SUSY breaking terms as large as possible subject to a pocket universe value for the weak scale not greater than a…

High Energy Physics - Phenomenology · Physics 2020-03-25 Howard Baer , Vernon Barger , Dibyashree Sengupta

This work summarizes and puts in an overall perspective studies done within CMS concerning the discovery potential for squarks and gluinos, sleptons, charginos and neutralinos, SUSY dark matter, lightest Higgs, sparticle mass determination…

The estimation of the backgrounds for gluino signals in focus point supersymmetry is extended by including the backgrounds from the production of four third generation quarks in the analysis. We find that these backgrounds are negligible if…

High Energy Physics - Phenomenology · Physics 2008-11-26 Siba Prasad Das , Amitava Datta , Monoranjan Guchait , Manas Maity , Siddhartha Mukherjee

A consistent theory of supersymmetry breaking must have a hidden sector, an observable sector, and must be embedded in a locally supersymmetric theory which arises from string theory. For phenomenological reasons it must also transmit…

High Energy Physics - Theory · Physics 2009-03-27 S. P. de Alwis

We have analyzed the prospect of probing a non-universal gaugino mass model of mixed bino-higgsino dark matter at the current 7 TeV run of LHC. It provides cosmologically compatible dark matter relic density over two broad bands of…

High Energy Physics - Phenomenology · Physics 2015-03-13 Monoranjan Guchait , D. P. Roy , Dipan 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

Relatively light electroweak superparticle masses are required to satisfy the bulk annihilation region of dark matter relic density and account for the observed excess of muon g-2, while TeV scale squark and gluino masses are required to…

High Energy Physics - Phenomenology · Physics 2014-03-03 Subhendra Mohanty , Soumya Rao , D. P. Roy

A brief review is given of the ways of testing SUGRA unified models and a class of string models using data from precision electroweak experiments, Yukawa unification constraints, and constraints from dark matter experiments. Models…

High Energy Physics - Phenomenology · Physics 2007-05-23 Utpal Chattopadhyay

We propose the Supersymmetric Standard Models (SSMs) with a pseudo-Dirac gluino from hybrid $F-$ and $D-$term supersymmetry (SUSY) breakings. Similar to the SSMs before the LHC, all the supersymmetric particles in the Minimal SSM (MSSM)…

High Energy Physics - Phenomenology · Physics 2015-07-16 Ran Ding , Tianjun Li , Florian Staub , Chi Tian , Bin Zhu
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