Production at linear colliders of charginos and neutrilinos associated with Higgs and gauge bosons

2015 ◽  
Vol 93 (3) ◽  
pp. 278-282
Author(s):  
Chen Chi-Yi ◽  
Hou Hong-Sheng
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parameter Space ◽  
Cross Sections ◽  
Gauge Bosons ◽  
Linear Colliders ◽  
The Cross

We studied the production of charginos and neutrilinos associated with Higgs and gauge bosons in the Minimal Supersymmetric Standard Model (MSSM) at linear colliders. Understanding the processes will help determine the couplings of charginos and neutralinos to Higgs and gauge bosons in the MSSM. We investigated the parameter space for values of μ between –2000 and 2000 GeV and values of M2 between 0 and 2000 GeV. We found that the cross sections of the processes reach only a few femtobarns at a e+e– colliders with [Formula: see text] GeV.

PROBING THE HIGGS SECTOR OF THE MINIMAL SUPERSYMMETRIC STANDARD MODEL AT e+e− COLLIDERS

1992 ◽  
Vol 07 (31) ◽  
pp. 2877-2888 ◽  
Author(s):  
ATSUSHI YAMADA
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parameter Space ◽  
Cross Sections ◽  
Global Analysis ◽  
Production Cross ◽  
Higgs Sector ◽  
Branching Ratios ◽  
Higgs Bosons

The ability of future e+e− colliders to study the supersymmetric Higgs sector is examined. The effects of the radiative corrections are included. A global analysis is given for the production cross-sections of the neutral Higgs bosons over the full parameter space of the Higgs sector, which clarifies the integrated luminosity necessary for the detection of the neutral Higgs bosons. The branching ratios of the three neutral Higgs bosons are also computed.

scholarly journals INFLATION AND THE MINIMAL SUPERSYMMETRIC STANDARD MODEL

2008 ◽  
Vol 23 (33) ◽  
pp. 2799-2809 ◽  
Author(s):  
ROUZBEH ALLAHVERDI
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parameter Space ◽  
High Energy Physics ◽  
Hadron Collider ◽  
High Energy ◽  
Wilkinson Microwave Anisotropy Probe ◽  
Cosmological Data ◽  
Superluminal Expansion

There is strong evidence from cosmological data that the universe underwent an epoch of superluminal expansion called inflation. A satisfactory embedding of inflation in fundamental physics has been an outstanding problem at the interface of cosmology and high energy physics. We show how inflation can be realized within the Minimal Supersymmetric Standard Model (MSSM). The inflaton candidates are two specific combinations of supersymmetric partners of quarks and leptons. MSSM inflation occurs at a low scale and generates perturbations in the range experimentally allowed by the latest data from Wilkinson Microwave Anisotropy Probe (WMAP). The parameter space for inflation is compatible with supersymmetric dark matter, and the Large Hadron Collider (LHC) is capable of discovering the inflaton candidates in the allowed regions of parameter space.

scholarly journals The Higgs properties in the MSSM after the LHC Run-2

2018 ◽  
Vol 33 (11) ◽  
pp. 1841001
Author(s):  
Jun Zhao
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parameter Space ◽  
Yukawa Couplings ◽  
Gauge Couplings ◽  
Precision Electroweak Data ◽  
Higgs Data

We scrutinize the parameter space of the SM-like Higgs boson in the minimal supersymmetric standard model (MSSM) under current experimental constraints. The constraints are from (i) the precision electroweak data and various flavor observables; (ii) the direct 22 separate ATLAS searches in Run-1; (iii) the latest LHC Run-2 Higgs data and tri-lepton search of electroweakinos. We perform a scan over the parameter space and find that the Run-2 data can further exclude a part of parameter space. For the property of the SM-like Higgs boson, its gauge couplings further approach to the SM values with a deviation below 0.1%, while its Yukawa couplings [Formula: see text] and [Formula: see text] can still sizably differ from the SM predictions by several tens percent.

scholarly journals MINIMAL SUPERSYMMETRIC STANDARD MODEL HIGGS RATES AND BACKGROUNDS IN ATLAS

1998 ◽  
Vol 13 (09) ◽  
pp. 1371-1494 ◽  
Author(s):  
ELŻBIETA RICHTER-WAS ◽  
DANIEL FROIDEVAUX ◽  
FABIOLA GIANOTTI ◽  
LUC POGGIOLI ◽  
DONATELLA CAVALLI ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parameter Space ◽  
Higgs Sector ◽  
Atlas Detector ◽  
Direct Impact ◽  
Detector Performance ◽  
Upper Limit

This study presents an overview of the potential of the ATLAS detector at LHC for the observation of the Higgs boson of the minimal supersymmetric Standard Model (MSSM). The expected rates, backgrounds and significances are discussed channel by channel using realistic assumptions for the detector performance. As final results, the ranges of the MSSM parameter space projected on the (mA, tan β) and (mh, tan β) planes, for which the expected significances for the discovery of the different channels exceed a 5σ value, are shown for the ATLAS detector alone and for combined results from the ATLAS and CMS detectors. It is concluded that the combined potential of the two LHC detectors should fully cover the Higgs sector of the MSSM parameter space. The sensitivity of the results to the upper limit of the allowed mass for the lightest Higgs boson is extensively discussed. The direct impact of the SUSY particle sector on such searches is neglected in this paper.

scholarly journals The influence of the scalar unparticle on the W-pair production at ILC in the Randall–Sundrum model

2020 ◽  
Vol 35 (25) ◽  
pp. 2050217
Author(s):  
Dang Van Soa ◽  
Bui Thi Ha Giang
Keyword(s):  
Standard Model ◽  
Pair Production ◽  
Cross Sections ◽  
Production Cross ◽  
The Standard Model ◽  
Linear Colliders ◽  
The Cross ◽  
Scaling Dimension

An attempt is made to present the contribution of the scalar unparticle on some scattering processes in the Randall–Sundrum (RS) model. We have evaluated the contribution of the scalar unparticle on the W-pair production cross-sections at International Linear Colliders (ILC). The results indicate that at the low values of the scaling dimension and the bounds on scale [Formula: see text] are around few TeV, the cross-sections are much enhanced, which is quite comparable with the W-production in the Standard Model and hence it is worthwhile to explore in future colliders.

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