Double Higgs production at the linear colliders and the probing of the Higgs self-coupling

1996 ◽  
Vol 73 (1) ◽  
pp. 85-109 ◽  
Author(s):  
F. Boudjema ◽  
E. Chopin
2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Ijaz Ahmed

The production of triple Higgs (H+H-H0), (H+H-h0) and pairwise charged Higgs boson (H+H-) is studied in the context of future linear colliders within the two-Higgs-doublet model (2HDM) type II. The aim is to compare sources of charged Higgs pair through the above processes, that is, double and triple Higgs production. Cross sections are calculated at the leading order in 2HDM type II and Minimal Supersymmetric Standard Model (MSSM). Several orders of magnitude (~104) enhancement are observed in 2HDM compared to MSSM, while no sizable enhancement is seen in muon collider versus electron-positron collider. The analysis is based on a heavy charged Higgs with mass above 500 GeV. It is found that double charged Higgs production cross section (being the same in 2HDM and MSSM) is few femtobarns, while the triple Higgs production cannot exceed a fraction of femtobarn within the parameter space under study.


2005 ◽  
Vol 72 (7) ◽  
Author(s):  
Qiang Li ◽  
Chong Sheng Li ◽  
Robert J. Oakes ◽  
Li Lin Yang

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Martin Beneke ◽  
Mathias Garny ◽  
Sebastian Jaskiewicz ◽  
Robert Szafron ◽  
Leonardo Vernazza ◽  
...  

Author(s):  
T.O. Raubenheimer ◽  
W.E. Gabella ◽  
P.L. Morton ◽  
M.J. Lee ◽  
L.Z. Rivkin ◽  
...  
Keyword(s):  

2011 ◽  
Vol 26 (09) ◽  
pp. 1629-1637 ◽  
Author(s):  
YAO-BEI LIU ◽  
HUI YE ◽  
YONG-HUA CAO

In the framework of the topcolor-assisted technicolor (TC2) model, we study the neutral top-Higgs [Formula: see text] production processes [Formula: see text], [Formula: see text] and [Formula: see text]. The results show that the production rates can reach the level of a few fb with reasonable parameter values. With the clean background of the flavor-changing [Formula: see text] channel, the top-Higgs events can possibly be detected at the International Linear Collider (ILC) experiments. Therefore, such neutral top-Higgs production processes offer a useful way to probe for neutral top-Higgs and test the TC2 model directly.


2003 ◽  
Vol 18 (16) ◽  
pp. 2857-2869
Author(s):  
Achim W. Weidemann ◽  
P. Chen ◽  
C.-K. Ng

A 'plasma lens' might be used to enhance the luminosity of future linear colliders. However, its utility for this purpose depends largely on the potential backgrounds that may be induced by the insertion of such a device in the interaction region of the detector. In this note we identify different sources of such backgrounds, calculate their event rates from the elementary interaction processes, and evaluate their effects on the major parts of a hypothetical Next Linear Collider (NLC) detector. For plasma lens parameters which give a factor of seven enhancement of the luminosity, and using the NLC design for beam parameters as a reference, we find that the background yields are fairly high, and require further study and improvements in detector technology to avoid their impact.


2007 ◽  
Vol 22 (31) ◽  
pp. 5889-5908 ◽  
Author(s):  
M. Abbas ◽  
W. Emam ◽  
S. Khalil ◽  
M. Shalaby

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.


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