TeV Scale B – L Phenomenology at LHC

2007 ◽  
Vol 22 (31) ◽  
pp. 5889-5908 ◽  
Author(s):  
M. Abbas ◽  
W. Emam ◽  
S. Khalil ◽  
M. Shalaby
Keyword(s):  
Standard Model ◽  
Gauge Boson ◽  
Cross Sections ◽  
Branching Ratios ◽  
Higgs Production ◽  
Neutrino Masses ◽  
Natural Explanation ◽  
The Standard Model ◽  
The Cross

We present the phenomenology of the low scale U(1)B–L extension of the standard model and its implications at LHC. We show that this model provides a natural explanation for the presence of three right-handed neutrinos and can naturally account the observed neutrino masses and mixing. We study the decay and production of the extra gauge boson and the SM singlet scalar (heavy Higgs) predicted in this type of models. We find that the cross sections of the SM-like Higgs production are reduced by ~ 20% – 30%, while its decay branching ratios remain intact. The extra Higgs has relatively small cross sections and the branching ratios of Z′ → l+l− are of order ~ 20% compared to ~ 3% of the SM results.

EFFECTS OF AN EXTRA NEUTRAL E6 GAUGE BOSON IN e+e− ANNIHILATION INTO HADRONS

1988 ◽  
Vol 03 (12) ◽  
pp. 2959-2970
Author(s):  
F. CSIKOR ◽  
E. LENDVAI ◽  
G. PÓCSIK
Keyword(s):  
Standard Model ◽  
Gauge Boson ◽  
Cross Sections ◽  
Total Cross Sections ◽  
The Standard Model ◽  
Azimuthal Asymmetries

We calculate the influence of an extra neutral E6 gauge boson on the energy weighted and total cross sections in e+e− annihilation into hadrons. Longitudinal and azimuthal asymmetries are sensitive to the various extra U(1) factors and can show noticeable deviations from the standard model.

THE PRODUCTION OF WEAK INTERMEDIATE BOSONS IN e-p REACTIONS

1986 ◽  
Vol 01 (08) ◽  
pp. 465-474 ◽  
Author(s):  
EMIDIO GABRIELLI
Keyword(s):  
Standard Model ◽  
Cross Sections ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Production Cross ◽  
The Standard Model ◽  
Intermediate Bosons ◽  
The Cross

The calculations of production cross sections of W’ s and Z0’ s in e-p reactions at HERA energies and beyond are revised, improved and updated. Comparison with previous calculations show that in some cases the cross sections were considerably overestimated. The effects of a possible deviation of the W anomalous magnetic moment from the standard model value are also discussed.

ASSOCIATED PRODUCTION OF LIGHT PSEUDOSCALAR BOSON η WITH TOP QUARK PAIRS IN THE SLH MODEL AT THE ILC

2011 ◽  
Vol 26 (21) ◽  
pp. 1577-1586 ◽  
Author(s):  
JINZHONG HAN ◽  
DAPENG YANG ◽  
XUELEI WANG
Keyword(s):  
Standard Model ◽  
Cross Section ◽  
Cross Sections ◽  
Top Quark ◽  
Linear Collider ◽  
International Linear Collider ◽  
Quark Pairs ◽  
Associated Production ◽  
The Standard Model ◽  
The Cross

The light pseudoscalar boson η is the typical particle predicted by the Simplest Little Higgs (SLH) model. In this paper, we investigate some processes of the associated production of a light pseudoscalar boson η with a pair of top quarks in the SLH model at the International Linear Collider (ILC), i.e. [Formula: see text] and [Formula: see text]. We find that the cross-sections of these two processes could reach [Formula: see text] fb in the favorite parameter space in the SLH model, which is consistent with the results of the cross-section of [Formula: see text] in the standard model and the cross-section of [Formula: see text] in the minimal supersymmetric standard model. It should be clear that hundreds to thousands of η can be produced at the ILC per year, these processes of [Formula: see text] are really interesting in testing the standard model and searching the signs of the SLH model.

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.

Bremsstrahlung Calculations of Single Gauge-Boson Production on Linear Colliders in Context of "New Physics" Searching

2021 ◽  
Vol 24 (4) ◽  
pp. 317-325
Author(s):  
I. A. Shershan ◽  
T. V. Shishkina
Keyword(s):  
Standard Model ◽  
Gauge Boson ◽  
Cross Sections ◽  
Dimensional Regularization ◽  
High Energy ◽  
New Physics ◽  
Boson Production ◽  
Leading Order ◽  
The Standard Model ◽  
Electron Photon

Differential and total cross sections of single gauge boson production in high energy electron-photon collisions obtained within the Standard Model in leading order and next-to-leading order are presented. Soft photon bremsstrahlung as well as hard photon bremsstrahlung parts were considered using the dimensional regularization procedure. Special features of receiving the hard bremsstrahlung convergent contribution are discussed. The corresponding anomalous gauge boson couplings were studied in the effective Lagrangian approach. Best conditions for registration of effects beyond the Standard Model are determined.

TRIPLE GAUGE BOSON PRODUCTION IN e+e- COLLISIONS

1991 ◽  
Vol 06 (39) ◽  
pp. 3565-3572
Author(s):  
M. H. NOUS ◽  
M. El-KISHEN ◽  
A. M. ALGELANI
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Cross Section ◽  
Gauge Boson ◽  
Cross Sections ◽  
Production Cross ◽  
Boson Production ◽  
Production Mechanism ◽  
The Standard Model

The production cross-sections for a triple gauge boson has been investigated in both the standard model and the minimal supersymmetric standard model, via e+e-→W+W-Z0. All events that contain the Higgs-boson seem to have no influence in this process. At [Formula: see text], this process could be detected with a reasonable cross-section, the production mechanism in this case will be e+e-→Z0→W+W-→W+W-Z0.

The Triple Anomalous Gauge Couplings Investigation on Linear eγ-Collider

2019 ◽  
Vol 22 (4) ◽  
pp. 318-329 ◽  
Author(s):  
I. A. Shershan Shershan ◽  
T. V. Shishkina Shishkina
Keyword(s):  
Standard Model ◽  
Gauge Boson ◽  
Cross Sections ◽  
High Energy ◽  
Beyond The Standard Model ◽  
Leading Order ◽  
Effective Lagrangian ◽  
The Standard Model ◽  
Gauge Couplings ◽  
Electron Photon

The differential and total cross sections of the single gauge boson production in quasielastic high energy electron-photon scattering are obtained within the Standard Model in leading order and next-to-leading order of the perturbative theory. The contribution of divergent part of hard photon bremsstrahlung was included. The anomalous gauge boson coupling in the effective Lagrangian approach were studied. It is shown the analysis of neutral gauge couplings can be fully performed for two constants with different types of symmetries. Numerical analysis has been done. The best conditions were determined for registration of generated effects beyond the Standard Model.

scholarly journals Higgs and BSM Studies at the LHC

Universe ◽  
2019 ◽  
Vol 5 (7) ◽  
pp. 160
Author(s):  
Dezso Horváth
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Cross Sections ◽  
Collision Energy ◽  
Experimental Situation ◽  
Hadron Collider ◽  
Higgs Mechanism ◽  
Neutrino Masses ◽  
Hierarchy Problem ◽  
The Standard Model

The discovery and study of the Higgs boson at the Large Hadron Collider of CERN has proven the validity of the Brout–Englert–Higgs mechanism of mass creation in the standard model via spontaneous symmetry breaking. The new results obtained by the ATLAS and CMS Collaborations at the LHC show that all measured cross-sections agree within uncertainties with the predictions of the theory. However, the standard model has obvious difficulties (nonzero neutrino masses, hierarchy problem, existence of dark matter, non-existence of antimatter galaxies, etc.), which point towards more possible violated symmetries. We first summarize the present status of the studies of the Higgs boson, including the latest results at 13 TeV p-p collision energy, then enlist some of the problems with possible solutions and the experimental situation regarding them.

scholarly journals PRELIMINARY MEASUREMENTS OF THE QUARK-ANTIQUARK PRODUCTION CROSS-SECTION IN E+E- ANNIHILATIONS UP TO LEP2 HIGHEST ENERGIES

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 342-344
Author(s):  
GIUSEPPE DELLA RICCA
Keyword(s):  
Standard Model ◽  
Pair Production ◽  
Cross Section ◽  
Cross Sections ◽  
Production Cross Section ◽  
Production Cross ◽  
Delphi Detector ◽  
The Standard Model ◽  
Model Predictions ◽  
The Cross

Data collected with the DELPHI detector at [Formula: see text] up to LEP2 highest energies (i.e. exceeding 205 GeV) have been used to extract preliminary values of the cross-sections for quark-antiquark pair-production in e + e - annihilations. The values found were used to test the Standard Model predictions and to seek for physics beyond it.

scholarly journals ELECTROWEAK RIGHT-HANDED NEUTRINOS AND NEW HIGGS SIGNALS AT THE LHC

2011 ◽  
Vol 26 (17) ◽  
pp. 2865-2880 ◽  
Author(s):  
J. L. DÍAZ-CRUZ ◽  
O. FÉLIX-BELTRÁN ◽  
A. ROSADO ◽  
S. ROSADO-NAVARRO
Keyword(s):  
Standard Model ◽  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Cross Sections ◽  
Higgs Sector ◽  
Higgs Doublet ◽  
Branching Ratios ◽  
Higgs Potential ◽  
The Standard Model ◽  
Higgs Signal

We explore some aspects of the phenomenology of the Higgs sector in a model that includes right-handed neutrinos, with a mass of the order of the electroweak scale. In this model all scales arise from spontaneous symmetry breaking, thus the Higgs sector includes an extra Higgs singlet, in addition to the Standard Model Higgs doublet. The scalar spectrum includes two neutral CP-even states (h and H, with mh < mH) and a neutral CP-odd state (σ) that can be identified as a pseudo-Majoron. The parameter of the Higgs potential are constrained using a perturbativity criteria, which amounts to solve the corresponding RGE. The relevant Higgs branching ratios and some cross-sections are discussed, with special emphasis on the detection of the invisible Higgs signal at the LHC.

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