scholarly journals Solution to the baryon–dark-matter coincidence problem in the constrained minimal supersymmetric model with a 126-GeV Higgs boson

2015 ◽  
Vol 91 (8) ◽  
Author(s):  
Ayuki Kamada ◽  
Masahiro Kawasaki ◽  
Masaki Yamada
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Supersymmetric Model ◽  
Coincidence Problem ◽  
Minimal Supersymmetric Model

scholarly journals DARK MATTER IN THE MSSM AND ITS SINGLET EXTENSION

2010 ◽  
Vol 25 (11n12) ◽  
pp. 976-982 ◽  
Author(s):  
JIN MIN YANG
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Cross Section ◽  
Higgs Bosons ◽  
Annihilation Cross Section ◽  
Supersymmetric Model ◽  
Sommerfeld Effect ◽  
Dark Matter Relic Density ◽  
Relic Density ◽  
Minimal Supersymmetric Model

We briefly review the supersymmetric explanation for the cosmic dark matter. Although the neutralino in the minimal supersymmetric model (MSSM), the next-to-minimal supersymmetric model (NMSSM) and the nearly minimal supersymmetric model (nMSSM) can naturally explain the dark matter relic density, the PAMELA result can hardly be explained in these popular models. In the general singlet extension of the MSSM, both the PAMELA result and the relic density can be explained by the singlino-like neutralino. Such singlino-like neutralinos annihilate into the singlet-like Higgs bosons, which are light enough to decay dominantly to muons or electrons, and the annihilation cross section can be greatly enhanced by the Sommerfeld effect via exchanging a light CP-even singlet-like Higgs boson. In this scenario, in order to meet the stringent LEP constraints, the SM-like Higgs boson tends to decay into the singlet Higgs pairs instead of [Formula: see text] and consequently it will give a multi-muon signal hSM → aa → 4µ or hSM → hh → 4a → 8µ at the LHC.

Searching for theCP-odd higgs boson of the minimal supersymmetric model at hadron supercolliders

1992 ◽  
Vol 46 (7) ◽  
pp. 2907-2917 ◽  
Author(s):  
John F. Gunion ◽  
Howard E. Haber ◽  
Chung Kao
Keyword(s):  
Higgs Boson ◽  
Supersymmetric Model ◽  
Minimal Supersymmetric Model

scholarly journals DETECTION OF INTERMEDIATE MASS HIGGS BOSONS FROM SPONTANEOUSLY BROKEN R-PARITY SUPERSYMMETRY

1994 ◽  
Vol 09 (09) ◽  
pp. 817-827 ◽  
Author(s):  
J. C. ROMÃO ◽  
J. L. DIAZ-CRUZ ◽  
F. DE CAMPOS ◽  
J. W. F. VALLE
Keyword(s):  
Mass Spectrum ◽  
Higgs Boson ◽  
Transverse Momentum ◽  
Higgs Sector ◽  
Higgs Bosons ◽  
Supersymmetric Model ◽  
Intermediate Mass ◽  
Missing Transverse Momentum ◽  
The Standard Model ◽  
Minimal Supersymmetric Model

The Higgs sector in spontaneously broken R-parity supersymmetry (RPSUSY) shows interesting features that require new search techniques. Both the mass spectrum and production rates may differ from the Standard Model and minimal supersymmetric model (MSSM) expectations. For some parameter choices, the dominant Higgs boson decay mode can even be invisible, leading to events with large missing transverse momentum carried by superweakly interacting majorons. We study the reaction pp → Z + H + X, and find that it can lead to detectable events at LHC/SSC for a large region of parameter space.

THE ELUSIVE HIGGS BOSON(S)

2010 ◽  
Vol 25 (22) ◽  
pp. 4163-4177 ◽  
Author(s):  
JOHN F. GUNION
Keyword(s):  
Higgs Boson ◽  
Supersymmetric Model ◽  
Light Higgs Boson ◽  
Minimal Supersymmetric Model

We outline the motivations for having a light Higgs boson with fairly SM-like couplings to WW, ZZ but with unusual decays that elude LEP limits and that will also make its detection at the LHC quite challenging. The Next-to-Minimal Supersymmetric Model provides a very appealing model of this type.

scholarly journals Closing the Window on Light Charged Higgs Bosons in the NMSSM

2012 ◽  
Vol 2012 ◽  
pp. 1-22 ◽  
Author(s):  
Johan Rathsman ◽  
Thomas Rössler
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Branching Fraction ◽  
Hadron Collider ◽  
Higgs Bosons ◽  
Supersymmetric Model ◽  
Charged Higgs ◽  
Charged Higgs Bosons ◽  
Minimal Supersymmetric Model ◽  
Higgs Signal

In the Next-to-Minimal SuperSymmetric Model (NMSSM) the lightest CP-odd Higgs bosons (a1) can be very light. As a consequence, in addition to the standard charged Higgs boson (h±) decays considered in the MSSM for a light charged Higgs (mh±<mt), the branching fraction forh±→a1Wcan be dominant. We investigate how this signal can be searched for intt-production at the Large Hadron Collider (LHC) in the case that (ma1≳2mB) with thea1giving rise to a singlebb--jet and discuss to what extent the LHC experiments are able to discover such a scenario with an integrated luminosity ~20 fb−1. We also discuss the implications of the possible Higgs-signal observed at the LHC.

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