Results 91 to 100 of about 86,389 (188)

Impact of vacuum stability constraints on the phenomenology of supersymmetric models

open access: yesJournal of High Energy Physics, 2019
We present a fast and efficient method for studying vacuum stability constraints in multi-scalar theories beyond the Standard Model. This method is designed for a reliable use in large scale parameter scans.
Wolfgang G. Hollik   +2 more
doaj   +1 more source

IS (Low Energy) SUSY STILL ALIVE?

open access: yes, 2012
Supersymmetry, a new symmetry that relates bosons and fermions in particle physics, still escapes observation. Search for supersymmetry is one of the main aims of the Large Hadron Collider.
Gladyshev, A. V., Kazakov, D. I.
core   +1 more source

Simultaneous search for extra light and heavy Higgs bosons via cascade decays

open access: yesJournal of High Energy Physics, 2017
Models with extended Higgs sectors can contain several additional Higgs states, heavier or lighter than the SM Higgs boson. The couplings of lighter extra states to SM particles can be strongly reduced, leading to small cross sections for their direct ...
Ulrich Ellwanger   +1 more
doaj   +1 more source

Long live the Higgs portal!

open access: yesJournal of High Energy Physics, 2019
In Higgs portal models of fermion dark matter, scalar couplings are unavoidably suppressed by strong bounds from direct detection experiments. As a consequence, thermal dark matter relics must coexist with mediators in a compressed spectrum of dark ...
Anastasiia Filimonova, Susanne Westhoff
doaj   +1 more source

A supersymmetric electroweak scale seesaw model

open access: yesJournal of High Energy Physics, 2017
In this paper we propose a novel supersymmetric inverse seesaw model which has only one additional Z 6 symmetry. The field content is minimal to get a viable neutrino spectrum at tree-level. Interestingly, the inverse seesaw scale in our model is related
Jung Chang   +5 more
doaj   +1 more source

Revisiting the non-resonant Higgs pair production at the HL-LHC

open access: yesJournal of High Energy Physics, 2018
We study the prospects of observing the non-resonant di-Higgs pair production in the Standard Model (SM) at the high luminosity run of the 14 TeV LHC (HL-LHC), upon combining multiple final states chosen on the basis of their yield and cleanliness.
Amit Adhikary   +4 more
doaj   +1 more source

The SUSY Higgs Mass: the Singlet Saves the Day

open access: yes, 2010
We present a generalization of the Next-to-Minimal Supersymmetric Standard Model (NMSSM), with an explicit mu-term and a supersymmetric mass for the singlet superfield, as a route to alleviating the little hierarchy problem of the Minimal Supersymmetric ...
de la Puente, Alejandro   +3 more
core   +1 more source

Holomorphic scalar portals and the OPE

open access: yesJournal of High Energy Physics, 2017
Visible-sector SUSY-breaking effects are computed in terms of hidden-sector correlation functions for generic holomorphic scalar portals. The solutions, which are valid irrespective of the hidden-sector dynamics, are approximated with the help of the ...
Jean-François Fortin   +1 more
doaj   +1 more source

Two-Loop Renormalization Group Equations for Soft Supersymmetry-Breaking Couplings

open access: yes, 2008
We compute the two-loop renormalization group equations for all soft supersymmetry-breaking couplings in a general softly broken N=1 supersymmetric model.
A. Chamseddine   +55 more
core   +1 more source

Realization of a spontaneous gauge and supersymmetry breaking vacuum

open access: yesJournal of High Energy Physics, 2017
It is one of the major issues to realize a vacuum which breaks supersymmetry (SUSY) and R-symmetry, in a supersymmetric model. We study the model, where the same sector breaks the gauge symmetry and SUSY. In general, the SUSY breaking model without gauge
Tatsuo Kobayashi   +3 more
doaj   +1 more source

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