scholarly journals Charged Higgs pair production at the LHC as a probe of the top-seesaw assisted technicolor model

2016 ◽  
Vol 31 (20n21) ◽  
pp. 1650119
Author(s):  
Guo-Li Liu ◽  
Ping Zhou ◽  
Xiao-Fei Guo ◽  
Kun Wu ◽  
Ji Jiang
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
Higgs Mass ◽  
Production Cross ◽  
Gluon Fusion ◽  
Higgs Bosons ◽  
Hadron Colliders ◽  
Technicolor Model ◽  
Charged Higgs ◽  
Tc Model

The top-seesaw assisted technicolor (TC) model, which was proposed recently to accommodate the 126 GeV Higgs mass discovered by the Large Hadron Colliders (LHC), predicts light and heavy charged Higgs bosons in addition to the neutral Higgses. In this paper, we will study the pair productions of the charged Higgs, proceeding through gluon–gluon fusion and quark–antiquark annihilation, at the LHC in the frame of the top-seesaw assisted TC model. We find that in a large part of parameter space the production cross-sections of the light charged Higgs pair at the LHC can be quite large compared with the low standard model backgrounds, while it is impossible for the pair production of the heavy ones to be detected with the strong final mass suppression. Therefore, the light charged Higgs pair production may be served as a probe of this new TC model at the LHC.

Pair production of doubly charged Higgs boson at photon linear collider in the Higgs triplet model

2014 ◽  
Vol 29 (10) ◽  
pp. 1450041 ◽  
Author(s):  
Jun Cao ◽  
Jie-Fen Shen
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Cross Sections ◽  
Linear Collider ◽  
Higgs Bosons ◽  
Charged Higgs ◽  
Triplet Model ◽  
Charged Higgs Bosons ◽  
Doubly Charged ◽  
Higgs Triplet Model

The characteristic feature of the Higgs Triplet Model (HTM) is the existence of the doubly charged Higgs bosons H±±. In this paper, we study the pair production of doubly charged Higgs bosons in γγ collisions at the International Linear Collider (ILC). We present the production cross-sections and the distributions of the various observables, i.e. the distributions of the transverse momenta, the rapidity distributions for doubly charged Higgs bosons and the production angle distributions of the charged Higgs boson pair. Our numerical results show that, the values of the unpolarized cross-sections can reach a few hundreds of fb. We also study the possible final state for the decay mode H±±→W±W± and relevant Standard Model (SM) background. Due to high produced rate and small SM background, the possible signals of H±± might be detected via this process in the future ILC experiments.

TRIPLE HIGGS BOSON PRODUCTION AT THE ILC IN THE LEFT–RIGHT TWIN HIGGS MODEL

2012 ◽  
Vol 27 (06) ◽  
pp. 1250030 ◽  
Author(s):  
XIN QIN ◽  
YAO-BEI LIU
Keyword(s):  
Higgs Boson ◽  
Cross Section ◽  
Cross Sections ◽  
Production Cross ◽  
Higgs Bosons ◽  
Neutral Higgs Boson ◽  
Resonance Production ◽  
Charged Higgs ◽  
Charged Higgs Bosons ◽  
Parameter Values

Besides the SM-like Higgs boson h, the left–right twin Higgs (LRTH) model predicts the existence of three additional Higgs bosons: one neutral Higgs ϕ0and a pair of charged Higgs bosons ϕ±. In this paper, we focus on the study of the triple Higgs production at the ILC, i.e. e+e-→ϕ0ϕ+ϕ-and e+e-→hhϕ0. We present the production cross-sections and the distributions of the various observables, such as, the distributions of the energy and the transverse momenta of neutral and charged Higgs bosons, the differential cross-section of the invariant mass of final Higgs bosons pair, and the production angle distributions of neutral Higgs boson and charged Higgs boson. Our numerical results show that, for the processes e+e-→ϕ0ϕ+ϕ-and e+e-→hhϕ0, the production rates are at the level of 10-1fb with reasonable parameter values while the resonance production cross-section can be significantly enhanced and reach several tens fb. The signatures for signals and corresponding standard model backgrounds are also investigated for the decay mode [Formula: see text].

scholarly journals INDIRECT SEARCHES FOR LEPTOQUARKS AT PRESENT AND FUTURE COLLIDERS

1988 ◽  
Vol 03 (04) ◽  
pp. 443-450 ◽  
Author(s):  
H. DREINER ◽  
J. ELLIS ◽  
D.V. NANOPOULOS ◽  
N.D. TRACAS ◽  
N.D. VLACHOS
Keyword(s):  
Total Cross Section ◽  
Pair Production ◽  
Cross Section ◽  
Cross Sections ◽  
Indirect Effects ◽  
Production Cross ◽  
Lepton Pair ◽  
Hadron Colliders ◽  
Scalar Particles ◽  
Lepton Pair Production

We explore the sensitivities of e+e− colliders (LEP, CLIC) and hadron-hadron colliders (CERN [Formula: see text], FNAL [Formula: see text], LHC pp and SSC pp) to the indirect effects of virtual scalar particles with superstring-inspired leptoquark and diquark couplings. We find that e+e− colliders have better sensitivities via total cross section measurements of [Formula: see text] than via asymmetry measurements, and that LEP 2 is much more sensitive than LEP 1. Hadron-hadron colliders are sensitive via lepton-pair production cross sections ( [Formula: see text]μ+μ−, τ+τ−).

scholarly journals Collinear expansion for color singlet cross sections

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Markus A. Ebert ◽  
Bernhard Mistlberger ◽  
Gherardo Vita
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross ◽  
Gluon Fusion ◽  
Building Blocks ◽  
Color Singlet ◽  
Final State ◽  
Beam Function ◽  
Kinematic Limit ◽  
State Radiation

Abstract We demonstrate how to efficiently expand cross sections for color-singlet production at hadron colliders around the kinematic limit of all final state radiation being collinear to one of the incoming hadrons. This expansion is systematically improvable and applicable to a large class of physical observables. We demonstrate the viability of this technique by obtaining the first two terms in the collinear expansion of the rapidity distribution of the gluon fusion Higgs boson production cross section at next-to-next-to leading order (NNLO) in QCD perturbation theory. Furthermore, we illustrate how this technique is used to extract universal building blocks of scattering cross section like the N-jettiness and transverse momentum beam function at NNLO.

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