Results 41 to 50 of about 2,125 (212)

Single neutralino production at the LHC [PDF]

open access: yesPhysical Review D, 2013
33 pages, 29 figures, 3 ...
A. I. Ahmadov   +2 more
openaire   +4 more sources

Search for electroweak production of charginos in final states with two τ leptons in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV

open access: yesJournal of High Energy Physics, 2017
Results are presented from a search for the electroweak production of supersymmetric particles in pp collisions in final states with two τ leptons. The data sample corresponds to an integrated luminosity between 18.1 fb−1 and 19.6 fb−1 depending on the ...
The CMS collaboration   +2261 more
doaj   +1 more source

Dark Matter Constraints and the Neutralino Sector of the scNMSSM

open access: yesUniverse, 2021
The neutralino sector of the semi-constrained next-to-minimal supersymmetric standard model is explored under recent experimental constraints, with special attention to dark matter (DM) limits.
Elham Aldufeery, Maien Binjonaid
doaj   +1 more source

An Analysis of a Minimal Vectorlike Extension of the Standard Model

open access: yesAdvances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
We analyze an extension of the Standard Model with an additional SU(2) hypercolor gauge group keeping the Higgs boson as a fundamental field. Vectorlike interactions of new hyperquarks with the intermediate vector bosons are explicitly constructed. We also consider pseudo‐Nambu–Goldstone bosons caused by the symmetry breaking SU(4) → Sp(4).
V. Beylin   +4 more
wiley   +1 more source

Relic neutralinos

open access: yes, 2001
Phenomenology of relic neutralinos is analyzed in an effective supersymmetric scheme at the electroweak scale. It is shown that current direct experiments for WIMPs, when interpreted in terms of relic neutralinos, are indeed probing regions of supersymmetric parameter space compatible with all present experimental bounds.
Bottino, A., Fornengo, N., Scopel, S.
openaire   +2 more sources

First LHC constraints on neutralinos [PDF]

open access: yesPhysics Letters B, 2012
The ATLAS and CMS collaborations have recently reported tantalizing hints of the existence of a 125 GeV Higgs--like particle, whose couplings appear to match well the Standard Model (SM) expectations. In this work, we study implications of this observation for the neutralino sector of supersymmetric models, assuming that the Higgs signal gets confirmed.
Dreiner, H., Kim, J., Lebedev, O.
openaire   +6 more sources

Search for supersymmetry using Higgs boson to diphoton decays at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2019
A search for supersymmetry (SUSY) is presented where at least one Higgs boson is produced and decays to two photons in the decay chains of pair-produced SUSY particles.
The CMS collaboration   +2333 more
doaj   +1 more source

Bose‐Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves

open access: yesAdvances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
We present a comparative confrontation of both the Bose‐Einstein Condensate (BEC) and the Navarro‐Frenk‐White (NFW) dark halo models with galactic rotation curves. We employ 6 High Surface Brightness (HSB), 6 Low Surface Brightness (LSB), and 7 dwarf galaxies with rotation curves falling into two classes.
M. Dwornik   +4 more
wiley   +1 more source

Search for long-lived particles using out-of-time trackless jets in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2023
A search for long-lived particles decaying in the outer regions of the CMS silicon tracker or in the calorimeters is presented. The search is based on a data sample of proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV recorded with the CMS detector ...
The CMS collaboration   +2325 more
doaj   +1 more source

Irreversible Thermodynamic Description of Dark Matter and Radiation Creation during Inflationary Reheating

open access: yesAdvances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
We investigate matter creation processes during the reheating period of the early Universe, by using the thermodynamic of open systems. The Universe is assumed to consist of the inflationary scalar field, which, through its decay, generates relativistic matter and pressureless dark matter. The inflationary scalar field transfers its energy to the newly
Juntong Su   +3 more
wiley   +1 more source

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