scholarly journals Higgs-pair production via gluon fusion at hadron colliders: NLO QCD corrections

2020 ◽  
Vol 2020 (4) ◽  
Author(s):  
Julien Baglio ◽  
Francisco Campanario ◽  
Seraina Glaus ◽  
Margarete Mühlleitner ◽  
Jonathan Ronca ◽  
...  
Keyword(s):  
Pair Production ◽  
Gluon Fusion ◽  
Hadron Colliders

Pair production of leptoquark scalars in hadron colliders

1990 ◽  
Vol 68 (7-8) ◽  
pp. 612-619 ◽  
Author(s):  
Marc de Montigny ◽  
Luc Marleau
Keyword(s):  
Pair Production ◽  
Gluon Fusion ◽  
Soft Gluon ◽  
Hadron Colliders ◽  
Scalar Leptoquarks

We estimate soft-gluon corrections generated by π2 terms in the production of pairs of scalar leptoquarks in hadron collisions. These particles appear naturally in a superstring inspred E6 model and can be produced through quark–antiquark annihilation and gluon fusion with or without Yukawa interactions.

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.

scholarly journals Prompt $${J/\psi }$$-pair production at the LHC: impact of loop-induced contributions and of the colour-octet mechanism

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
Jean-Philippe Lansberg ◽  
Hua-Sheng Shao ◽  
Nodoka Yamanaka ◽  
Yu-Jie Zhang
Keyword(s):  
Pair Production ◽  
Good Control ◽  
Distance Matrix ◽  
High Energy ◽  
Matrix Elements ◽  
Hadron Colliders ◽  
Long Distance ◽  
Gauge Invariant ◽  
Energy Hadron ◽  
Colour Octet

AbstractPrompt double-$$J/\psi $$J/ψ production at high-energy hadron colliders can be considered as a golden channel to probe double parton scatterings (DPS)—in particular to study gluon–gluon correlations inside the proton—and, at the same time, to measure the distribution of linearly-polarised gluons inside the proton. Such studies, however, require a good control of both single parton scatterings (SPS) and DPS in the respective regions where they are carried out. In this context, we have critically examined two mechanisms of SPS that may be kinematically enhanced where DPS are thought to be dominant, even though they are either at higher orders in the strong-coupling or velocity expansion. First, we have considered a gauge-invariant and infrared-safe subset of the loop-induced contribution via colour-singlet (CS) transitions. We have found it to become the leading CS SPS contributions at large rapidity separation, yet too small to account for the data without invoking the presence of DPS yields. Second, we have surveyed the possible colour-octet (CO) contributions using both old and up-to-date non-perturbative long-distance matrix elements (LDMEs). We have found that the pure CO yields crucially depend on the LDMEs. Among all the LDMEs we used, only two result into a visible modification of the NRQCD (CS+CO) yield, but only in two kinematical distributions measured by ATLAS, those of the rapidity separation and of the pair invariant mass. These modifications, however, do not impact the control region used for their DPS study.

scholarly journals Higgs boson pair production in the little Higgs model at hadron colliders

2004 ◽  
Vol 70 (1) ◽  
Author(s):  
Liu Jing-Jing ◽  
Ma Wen-Gan ◽  
Li Gang ◽  
Zhang Ren-You ◽  
Hou Hong-Sheng
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Higgs Model ◽  
Little Higgs ◽  
Hadron Colliders ◽  
Boson Pair ◽  
Boson Pair Production
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