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We explore the relic density of dark matter and the particle spectrum within a constrained version of an $E_6$ inspired SUSY model with an extra $U(1)_N$ gauge symmetry. In this model a single exact custodial symmetry forbids tree-level…

High Energy Physics - Phenomenology · Physics 2016-06-24 P. Athron , D. Harries , R. Nevzorov , A. G. Williams

The 750 GeV diphoton excess reported by ATLAS and CMS indicates the presence of several pairs of the vector-like matter multiplets around TeV scale. If that is the case, radiative corrections from the $SU(3)$ gauge interaction significantly…

High Energy Physics - Phenomenology · Physics 2016-05-16 Chengcheng Han , Tsutomu T. Yanagida , Norimi Yokozaki

We propose to generate a realistic soft SUSY breaking spectrum for Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a generalized deflected mirage mediation scenario, in which additional Yukawa and gauge mediation contributions…

High Energy Physics - Phenomenology · Physics 2019-05-15 Xiao Kang Du , Guo-Li Liu , Fei Wang , Wenyu Wang , Jin Min Yang , Yang Zhang

Assuming that the scale of new physics exceeds the weak scale, we have considered all possible origins of deviations from the Standard Model in $\gmu2$. If the underlying theory can be treated perturbatively, then to account for an effect…

High Energy Physics - Phenomenology · Physics 2009-11-07 Martin B. Einhorn , J. Wudka

As the mass limits on supersymmetric particles are gradually pushed to higher values due to their continuing non-observation at the CERN LHC, looking for focus point regions in the supersymmetric parameter space, which shows considerably…

High Energy Physics - Phenomenology · Physics 2015-07-29 Gautam Bhattacharyya , Tsutomu T. Yanagida , Norimi Yokozaki

We point out that a hypothesis of squarks and sleptons being Nambu-Goldstone (NG) bosons is consistent with pure gravity mediation or minimal split supersymmetry (SUSY). As a concrete example, we consider a SUSY $E_7/SU(5) \times U(1)^3$…

High Energy Physics - Phenomenology · Physics 2016-10-12 Tsutomu T. Yanagida , Wen Yin , Norimi Yokozaki

In the Next-to-Minimal Supersymmetric Standard Model (NMSSM), the presence of light pseudoscalars can have a dramatic effect on the decays of the Standard Model-like Higgs boson. These pseudoscalars are naturally light if supersymmetry…

High Energy Physics - Phenomenology · Physics 2008-11-26 David E. Morrissey , Aaron Pierce

The recent measurement of a_\mu =\frac{g_\mu -2}{2} by the E821 Collaboration at Brookhaven deviates from the quoted Standard Model (SM) central value prediction by 2.6\sigma. The difference between SM theory and experiment may be easily…

High Energy Physics - Phenomenology · Physics 2009-11-07 Howard Baer , Csaba Balazs , Javier Ferrandis , Xerxes Tata

We discuss collider signatures of the "natural supersymmetry" scenario with baryon-number violating R-parity violation. We argue that this is one of the few remaining viable incarnations of weak scale supersymmetry consistent with full…

High Energy Physics - Phenomenology · Physics 2015-06-05 Christopher Brust , Andrey Katz , Raman Sundrum

We investigate a scenario inspired by natural supersymmetry, where neutrino data is explained within a low-scale seesaw scenario. For this the Minimal Supersymmetric Standard Model is extended by adding light right-handed neutrinos and…

High Energy Physics - Phenomenology · Physics 2021-06-30 J. Masias , N. Cerna-Velazco , J. Jones-Perez , W. Porod

To explain the observed muon anomaly and simultaneously evade bounds from lepton flavor violation in the same model parameter space is a long cherished dream. In view of a generalized Two Higgs Doublet Model, with a Yukawa structure as a…

High Energy Physics - Phenomenology · Physics 2021-12-22 Nivedita Ghosh , Jayita Lahiri

We consider a Minimal Supersymmetric Standard Model scenario in which the only light superparticles are a bino-like dark matter candidate and a nearly-degenerate slepton. It is notoriously difficult to probe this scenario at the Large…

High Energy Physics - Phenomenology · Physics 2017-11-01 Bhaskar Dutta , Kebur Fantahun , Ashen Fernando , Tathagata Ghosh , Jason Kumar , Pearl Sandick , Patrick Stengel , Joel W. Walker

We explore the phenomenology of the full General Gauge Mediation parameter space in the MSSM focusing on the consequences of having a fundamental Higgs around 125 GeV. Assuming GUT-complete structure of the hidden sector, we allow for…

High Energy Physics - Phenomenology · Physics 2013-06-03 Phill Grajek , Alberto Mariotti , Diego Redigolo

Supersymmetric models in singular extra dimensional spaces feature prominently in many interesting phenomenological models, including those derived from string theory. In this paper we explicitly derive the low energy theory of…

High Energy Physics - Theory · Physics 2025-11-27 Michael Nee , Lisa Randall

Motivated by excess diphoton events reported by ATLAS and CMS, we show that composite pseudoscalars, bound states of heavy fermions under a new confining gauge theory, can be pair-produced by Drell-Yan production if the constituent…

High Energy Physics - Phenomenology · Physics 2016-03-01 James M. Cline , Zuowei Liu

A total of 628$\invpb$ of data collected with the ALEPH detector at centre-of-mass energies from 189 to 209 GeV is analysed in the search for gauge mediated SUSY breaking (GMSB) topologies. These topologies include two acoplanar photons,…

High Energy Physics - Experiment · Physics 2012-08-27 ALEPH Collaboration

The Fermilab Muon $g-2$ collaboration recently announced the first result of measurement of the muon anomalous magnetic moment ($g-2$), which confirmed the previous result at the Brookhaven National Laboratory and thus the discrepancy with…

High Energy Physics - Phenomenology · Physics 2021-07-14 Motoi Endo , Koichi Hamaguchi , Sho Iwamoto , Teppei Kitahara

We consider a supersymmetric model motivated by a SO(10) grand unified theory: the gauge sector near the supersymmetry scale consists of SU(3)_c x SU(2)_L x U(1)_R x U(1)_{B-L}. We embed this model in minimal gauge mediation and incorporate…

High Energy Physics - Phenomenology · Physics 2013-08-06 Manuel E. Krauss , Werner Porod , Florian Staub

Realizing that couplings related by supersymmetry (SUSY) can be disentangled when SUSY is broken, it is suggested that unwanted flavor and CP violating SUSY couplings may be suppressed via quenched gaugino-flavor interactions, which may be…

High Energy Physics - Phenomenology · Physics 2017-07-05 James D. Wells , Yue Zhao

We explore the possibility of gauge mediation in a paradigm whereby supersymmetry is posited to be an accidental symmetry of Nature and the Standard Model fields are composite bound states that emerge from a conformal field theory. The…

High Energy Physics - Phenomenology · Physics 2011-05-12 Hock-Seng Goh , Siew-Phang Ng , Nobuchika Okada