scholarly journals Reconstruction of top-quark mass effects in Higgs pair production and other gluon-fusion processes

2018 ◽  
Vol 2018 (3) ◽  
Author(s):  
Ramona Gröber ◽  
Andreas Maier ◽  
Thomas Rauh
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Quark Mass ◽  
Gluon Fusion ◽  
Top Quark Mass ◽  
Mass Effects

scholarly journals Padé approach to top-quark mass effects in gluon fusion amplitudes

2019 ◽  
Author(s):  
Thomas Johannes Georg Rauh ◽  
Joshua Davies ◽  
Ramona Gröber ◽  
Andreas Maier ◽  
Matthias Steinhauser
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
Gluon Fusion ◽  
Top Quark Mass ◽  
Mass Effects

scholarly journals Higgs boson pair production at NNLO with top quark mass effects

2018 ◽  
Vol 2018 (5) ◽  
Author(s):  
M. Grazzini ◽  
G. Heinrich ◽  
S. Jones ◽  
S. Kallweit ◽  
M. Kerner ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Top Quark ◽  
Quark Mass ◽  
Top Quark Mass ◽  
Boson Pair ◽  
Boson Pair Production ◽  
Mass Effects

scholarly journals The gluon-fusion production of Higgs boson pair: N3LO QCD corrections and top-quark mass effects

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Long-Bin Chen ◽  
Hai Tao Li ◽  
Hua-Sheng Shao ◽  
Jian Wang
Keyword(s):  
Higgs Boson ◽  
Top Quark ◽  
Quark Mass ◽  
Gluon Fusion ◽  
Top Quark Mass ◽  
Boson Pair ◽  
Mass Effects

scholarly journals Higgs boson pair production: Top quark mass effects at NLO and NNLO

2015 ◽  
Vol 900 ◽  
pp. 412-430 ◽  
Author(s):  
Jonathan Grigo ◽  
Jens Hoff ◽  
Matthias Steinhauser
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Top Quark ◽  
Quark Mass ◽  
Top Quark Mass ◽  
Boson Pair ◽  
Boson Pair Production ◽  
Mass Effects

scholarly journals ZH production in gluon fusion: two-loop amplitudes with full top quark mass dependence

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Long Chen ◽  
Gudrun Heinrich ◽  
Stephen P. Jones ◽  
Matthias Kerner ◽  
Jonas Klappert ◽  
...  
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
Gluon Fusion ◽  
Top Quarks ◽  
Mass Dependence ◽  
Finite Part ◽  
Top Quark Mass ◽  
Helicity Amplitudes ◽  
Quark Mass Dependence ◽  
Loop Amplitudes

Abstract We present results for the two-loop helicity amplitudes entering the NLO QCD corrections to the production of a Higgs boson in association with a Z -boson in gluon fusion. The two-loop integrals, involving massive top quarks, are calculated numerically. Results for the interference of the finite part of the two-loop amplitudes with the Born amplitude are shown as a function of the two kinematic invariants on which the amplitudes depend.

scholarly journals Optimising top-quark threshold scan at CLIC using genetic algorithm

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
K. Nowak ◽  
A.F. Żarnecki
Keyword(s):  
Genetic Algorithm ◽  
Pair Production ◽  
Top Quark ◽  
Quark Mass ◽  
Mass Measurement ◽  
Production Cross ◽  
Model Parameters ◽  
Top Quark Mass ◽  
Systematic Uncertainties ◽  
Pair Production Cross Section

Abstract One of the important goals at the future e+e− colliders is to measure the top-quark mass and width in a scan of the pair production threshold. However, the shape of the pair-production cross section at the threshold depends also on other model parameters, as the top Yukawa coupling, and the measurement is a subject to many systematic uncertainties. Presented in this work is the study of the top-quark mass determination from the threshold scan at CLIC. The most general approach is used with all relevant model parameters and selected systematic uncertainties included in the fit procedure. Expected constraints from other measurements are also taken into account. It is demonstrated that the top-quark mass can be extracted with precision of the order of 30 to 40 MeV, including considered systematic uncertainties, already for 100 fb−1 of data collected at the threshold. Additional improvement is possible, if the running scenario is optimised. With the optimisation procedure based on the genetic algorithm the statistical uncertainty of the mass measurement can be reduced by about 20%. Influence of the collider luminosity spectra on the expected precision of the measurement is also studied.

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