Results 31 to 40 of about 921 (207)
Supersymmetry with a chargino NLSP and gravitino LSP [PDF]
Journal of High Energy Physics, 2009 We demonstrate that the lightest chargino can be lighter than the lightest neutralino in supersymmetric models with Dirac gaugino masses as well as within a curious parameter region of the MSSM. Given also a light gravitino, such as from low scale supersymmetry breaking, this mass hierarchy leads to an unusual signal where every superpartner cascades ...
Tuhin S. Roy +2 more
openaire +3 more sources
The Discreet Charm of Higgsino Dark Matter: A Pocket Review
Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018 We give a brief review of the current constraints and prospects for detection of higgsino dark matter in low‐scale supersymmetry. In the first part we argue, after performing a survey of all potential dark matter particles in the MSSM, that the (nearly) pure higgsino is the only candidate emerging virtually unscathed from the wealth of observational ...
Kamila Kowalska +2 more
wiley +1 more source
Very light charginos and Higgs decays [PDF]
Journal of High Energy Physics, 2013 We explore modifications to the loop-induced Higgs couplings h and h Z from light charginos in the Minimal Supersymmetric Standard Model. When the lightest chargino mass is above the naive LEP bound of order 100 GeV the effects are modest, with deviations in the decay branching ratios typically less than 15% from the Standard Model predictions ...
Brian Batell +4 more
openaire +3 more sources
MSSM Dark Matter in Light of Higgs and LUX Results
Advances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016 The constraints imposed on the Minimal Supersymmetric Standard Model (MSSM) parameter space by the Large Hadron Collider (LHC) Higgs mass limit and gluino mass lower bound are revisited. We also analyze the thermal relic abundance of lightest neutralino, which is the Lightest Supersymmetric Particle (LSP).
W. Abdallah, S. Khalil, Enrico Lunghi
wiley +1 more source
Chargino production at LEP2 in a supergravity model [PDF]
Physics Letters B, 1996 11 pages, latex, 4 figures ...
Steve F. King, Marco Aurelio Diaz
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Two Higgs Bosons near 125 GeV in the Complex NMSSM and the LHC Run I Data
Advances in High Energy Physics, Volume 2015, Issue 1, 2015., 2015 We analyse the impact of explicit CP‐violation in the Higgs sector of the Next‐to‐Minimal Supersymmetric Standard Model (NMSSM) on its consistency with the Higgs boson data from the Large Hadron Collider (LHC). Through detailed scans of the parameter space of the complex NMSSM for certain fixed values of one of its CP‐violating (CPV) phases, we obtain ...
Stefano Moretti +2 more
wiley +1 more source
Spin correlations in production and decay of charginos [PDF]
The European Physical Journal C, 1999 20 pages, 13 postscript figures, latex using epsf.sty; misprints in (12),(61),(82) corrected, minor changes in text and in some numerical results; version to appear in Eur.Phys.J ...
W. Majerotto +3 more
openaire +4 more sources
Lepton Flavor Violation beyond the MSSM
Advances in High Energy Physics, Volume 2015, Issue 1, 2015., 2015 Most extensions of the Standard Model lepton sector predict large lepton flavor violating rates. Given the promising experimental perspectives for lepton flavor violation in the next few years, this generic expectation might offer a powerful indirect probe to look for new physics.
A. Vicente, Michal Malinský
wiley +1 more source
Chargino production at an e−e− collider [PDF]
Physics Letters B, 1997 The chargino pair production in $e^-e^-$ collisions with their subsequent decays are considered within SUSY models with R-parity violation and with lepton number non-conservation. The production process ($\sqrt{s}=1$ TeV) is predicted to be large in a wide range of both sneutrino and chargino masses.
T. Wöhrmann, Janusz Gluza
openaire +3 more sources
R-parity violating decays of Wino chargino and wino neutralino LSPs and NLSPs at the LHC
Journal of High Energy Physics, 2019 The R-parity violating decays of both Wino chargino and Wino neutralino LSPs are analyzed within the context of the B − L MSSM “heterotic standard model”.
Sebastian Dumitru +2 more
doaj +1 more source