scholarly journals Search for neutral Higgs bosons in the minimal supersymmetric extension of the standard model

1994 ◽  
Vol 64 (1) ◽  
pp. 1-13 ◽  
Author(s):  
◽  
R. Akers ◽  
G. Alexander ◽  
J. Allison ◽  
K. J. Anderson ◽  
...  
Keyword(s):  
Standard Model ◽  
Higgs Bosons ◽  
Supersymmetric Extension ◽  
The Standard Model ◽  
Minimal Supersymmetric Extension

scholarly journals IMPACT OF THE SUSY DECAYS ON THE SEARCH FOR THE MSSM HIGGS BOSONS AT THE LHC

1999 ◽  
Vol 14 (05) ◽  
pp. 359-368 ◽  
Author(s):  
A. DJOUADI
Keyword(s):  
Standard Model ◽  
Branching Ratios ◽  
Higgs Bosons ◽  
Hadron Colliders ◽  
Supersymmetric Extension ◽  
Decay Channels ◽  
Decay Modes ◽  
The Standard Model ◽  
The Impact ◽  
Minimal Supersymmetric Extension

In the context of the minimal supersymmetric extension of the Standard Model, we discuss the impact of the decays of the neutral Higgs bosons into supersymmetric particles, charginos/neutralinos and sfermions. We show that these decay modes could be dominant, when they are kinematically accessible, thus strongly suppressing the branching ratios for the decay channels which are used to detect the Higgs bosons at hadron colliders. These SUSY decay modes should therefore not be overlooked in the search for the Higgs particles at the LHC.

A SEARCH FOR NEUTRAL HIGGS BOSONS AT HIGH tan β WITH THE DØ DETECTOR

2005 ◽  
Vol 20 (15) ◽  
pp. 3311-3313
Author(s):  
◽  
N. AXEL NAUMANN
Keyword(s):  
Standard Model ◽  
Symmetry Breaking ◽  
Bottom Quark ◽  
Higgs Bosons ◽  
Supersymmetric Extension ◽  
Weak Symmetry ◽  
The Standard Model ◽  
Quark Jets ◽  
Minimal Supersymmetric Extension

Many models of Electro-Weak symmetry breaking predict two Higgs doublets, and thus five Higgs bosons, three of which are neutral (h, H, A). The Minimal Supersymmetric extension of the Standard Model (MSSM) predicts the coupling of the bottom quark to the CP-odd scalar A to vary as tan β. The sum of the production of the CP-even scalars, h and H, is also proportional to tan 2 β. After searching for neutral Higgs bosons in multi-jet events containing three or more bottom-quark jets collected at the Tevatron by the DØ detector during Run II, we can exclude tan β > 80 – 120 for 90 GeV < mA < 150 GeV.

TWO-BODY RADIATIVE GLUINO DECAYS

1988 ◽  
Vol 03 (16) ◽  
pp. 1561-1568 ◽  
Author(s):  
ERNEST MA ◽  
GWO-GUANG WONG
Keyword(s):  
Standard Model ◽  
Branching Fraction ◽  
Color Singlet ◽  
Supersymmetric Extension ◽  
Neutral Fermion ◽  
The Standard Model ◽  
Gluino Decays ◽  
Minimal Supersymmetric Extension

A gluino can decay into a color-singlet neutral fermion [Formula: see text] by radiating off a gluon. We study this process in a minimal supersymmetric extension of the standard model. A significant branching fraction is possible depending on how much [Formula: see text] overlaps with the Higgs fermion which couples to the t quark and the mass of the t quark itself.

DIRECT VERSUS INDIRECT SEARCHES FOR NEUTRALINO DARK MATTER

1992 ◽  
Vol 07 (09) ◽  
pp. 733-747 ◽  
Author(s):  
A. BOTTINO ◽  
V. DE ALFARO ◽  
N. FORNENGO ◽  
A. MORALES ◽  
J. PUIMEDÓN ◽  
...  
Keyword(s):  
Experimental Data ◽  
Dark Matter ◽  
Standard Model ◽  
Coupling Strength ◽  
Supersymmetric Extension ◽  
Set Constraints ◽  
The Standard Model ◽  
Search Data ◽  
Relic Abundance ◽  
Minimal Supersymmetric Extension

Direct search for neutralino dark matter is analyzed in the framework of the minimal supersymmetric extension of the standard model, using a realistic evaluation of the neutralino relic abundance which also includes radiative corrections to the Higgs masses. Relevance of the present (Ge detectors) experimental data to set constraints on the parameters of the model is discussed and expectations for future experiments which involve neutralino-nucleus coherent processes are investigated. These results are compared to those obtained in a previous paper from indirect search data. In the present analysis particular attention is paid to the theoretical uncertainties due to the different estimates of the Higgs-nucleon coupling strength.

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