Results 11 to 20 of about 7,925 (256)

Neutralino relic density including coannihilations [PDF]

open access: greenNuclear Physics B - Proceedings Supplements, 1997
The relic density of the lightest neutralino, the lightest supersymmetric particle, is evaluated in the minimal supersymmetric extension of the Standard Model (MSSM).
Joakim Edsjö, Paolo Gondolo
semanticscholar   +8 more sources

How heavy can neutralino dark matter be? [PDF]

open access: yesJournal of High Energy Physics, 2019
What is the upper limit of the mass of the neutralino dark matter whose thermal relic is consistent with the observation? If the neutralino dark matter and colored sparticles are extremely degenerated in mass, with a mass difference less than the QCD ...
Hajime Fukuda, Feng Luo, Satoshi Shirai
doaj   +2 more sources

Search for chargino-neutralino production in events with Higgs and W bosons using 137 fb −1 of proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV [PDF]

open access: yesJournal of High Energy Physics, 2021
A search for electroweak production of supersymmetric (SUSY) particles in final states with one lepton, a Higgs boson decaying to a pair of bottom quarks, and large missing transverse momentum is presented.
The CMS collaboration   +2359 more
doaj   +2 more sources

Neutralino dark matter in scenarios with early matter domination [PDF]

open access: yesJournal of High Energy Physics, 2018
We investigate the production of neutralino dark matter in a cosmological scenario featuring an early matter dominated era ending at a relatively low reheating temperature.
Manuel Drees, Fazlollah Hajkarim
doaj   +2 more sources

Search for chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton collisions at $\sqrt{s}$=13 TeV with the ATLAS detector [PDF]

open access: green, 2018
A search for electroweak production of supersymmetric particles is performed in two-lepton and three-lepton final states using recursive jigsaw reconstruction. The search uses data collected in 2015 and 2016 by the ATLAS experiment in $\sqrt{s}$ = 13 TeV
Morad Aaboud
openalex   +3 more sources

Not-so-well-tempered neutralino [PDF]

open access: green, 2017
Author(s): Profumo, Stefano; Stefaniak, Tim; Stephenson-Haskins, Laurel | Abstract: Light electroweakinos, the neutral and charged fermionic supersymmetric partners of the Standard Model $\mathrm{SU}(2)\times\mathrm{U}(1)$ gauge bosons and of the two ...
Stefano Profumo   +2 more
openalex   +3 more sources

Search for chargino--neutralino pair production in final states with three leptons and missing transverse momentum in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector [PDF]

open access: yes, 2021
A search for chargino$-$neutralino pair production in three-lepton final states with missing transverse momentum is presented. The study is based on a dataset of $\sqrt{s} = 13$ TeV $pp$ collisions recorded with the ATLAS detector at the LHC ...
G. Aad   +499 more
semanticscholar   +1 more source

Chargino and neutralino decays revisited [PDF]

open access: greenThe European Physical Journal C, 2001
We perform a comprehensive analysis of the decays of charginos and neutralinos in the Minimal Supersymmetric Standard Model where the neutralino $ _1^0$ is assumed to be the lightest supersymmetric particle. We focus, in particular, on the three-body decays of the next-to-lightest neutralino and the lightest chargino into the lightest neutralino and ...
A. Djouadi   +2 more
openalex   +5 more sources

Light relic neutralinos [PDF]

open access: yesPhysical Review D, 2003
The relic abundance and the scalar cross-section off nucleon for light neutralinos (of mass below about 45 GeV) are evaluated in an effective MSSM model without GUT-inspired relations among gaugino masses. It is shown that these neutralinos may provide a sizeable contribution to the matter density in the Universe and produce measurable effects in WIMP ...
Bottino, A., Fornengo, N., Scopel, S.
openaire   +5 more sources

Collider signatures of a light NMSSM pseudoscalar in neutralino decays in the light of LHC results [PDF]

open access: diamond, 2014
A bstractWe investigate signatures induced by a very light pseudoscalar Higgs in neutralino decays in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) and determine their observability at the LHC.
David G. Cerdeño   +3 more
openalex   +3 more sources

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