Results 81 to 90 of about 13,430 (234)

Compilation of SUSY particle spectra from Snowmass 2001 benchmark models [PDF]

open access: yes, 2001
A comparative study of supersymmetric particle spectra calculated by the programs ISAJET, SUSYGEN and PYTHIA is presented for various SUSY scenarios defined at the Snowmass 2001 workshop.Comment: 91 pages, 26 ...
Ghodbane, Nabil, Martyn, Hans-Ulrich
core   +2 more sources

Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in $\sqrt{s}=7\ \mathrm{TeV}$ proton–proton collisions

open access: yesEuropean Physical Journal C: Particles and Fields, 2012
A search is presented for the pair production of light scalar top quarks in $\sqrt{s}=7~\mathrm{TeV}$ proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider.
The ATLAS Collaboration   +2886 more
doaj   +1 more source

Chargino contributions in light of recent ϵ′/ϵ

open access: yesPhysics Letters B, 2016
Recently, the standard model prediction of ϵ′/ϵ was improved, and a discrepancy from the experimental results was reported at the 2.9σ level. We study the chargino contributions to Z penguin especially with the vacuum stability constraint.
Motoi Endo   +3 more
doaj   +1 more source

Timelike transition form factor for CP-odd Higgs boson production

open access: yesSciPost Physics Proceedings, 2022
We investigate the production of CP-odd Higgs boson $A^0$ associated with a real $\gamma$ in $e^+e^-$ collisions. Because of the properties of $A^0$ coupling to the other fields, the main contribution comes from the top-quark triangle loop diagrams ...
Ken Sasaki, Tsuneo Uematsu
doaj   +1 more source

Searches for electroweak production of supersymmetric gauginos and sleptons with the ATLAS detector

open access: yesEPJ Web of Conferences, 2016
This paper shows the summary of the results from some recent research by ATLAS SUSY electroweak group(EWK). The sub-topics are including direct stau production, same-sign chargino pair production via vector boson fusion(VBF) and compressed spectra in ...
Ren Huan
doaj   +1 more source

Long-lived Charginos in the Focus-point Region of the MSSM Parameter Space

open access: yes, 2008
We analyse the possibility to get light long-lived charginos within the framework of the MSSM with gravity mediated SUSY breaking. We find out that this possibility can be realized in the so-called focus-point region of parameter space.
  +16 more
core   +1 more source

Chargino contributions to ε and ε′

open access: yesPhysics Letters B, 2001
AbstractWe analyze the chargino contributions to the K–K̄ mixing and ε′ in the mass insertion approximation and derive the corresponding bounds on the mass insertion parameters. We find that the chargino contributions can significantly enlarge the regions of the parameter space where CP violation can be fully supersymmetric.
Khalil, Shaaban, Lebedev, Oleg
openaire   +1 more source

Upper bounds on sparticle masses from muon g-2 and the Higgs mass and the complementarity of future colliders

open access: yes, 2015
Supersymmetric (SUSY) explanation of the discrepancy between the measurement of $(g-2)_\mu$ and its SM prediction puts strong upper bounds on the chargino and smuon masses.
Badziak, Marcin   +4 more
core   +1 more source

Precise estimate of charged Higgsino/Wino decay rate

open access: yesJournal of High Energy Physics
Higgsinos and Winos in the supersymmetric Standard Model are prime candidates for dark matter due to their weakly interacting nature. The mass differences between their charged components (charginos) and neutral components (neutralinos) become degenerate
Masahiro Ibe   +2 more
doaj   +1 more source

Probing compressed mass spectra in electroweak supersymmetry with Recursive Jigsaw Reconstruction

open access: yesJournal of High Energy Physics, 2018
The lack of evidence for the production of colored supersymmetric particles at the LHC has increased interest in searches for superpartners of the electroweak SM gauge bosons, namely the neutralinos and charginos.
M. Santoni
doaj   +1 more source

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