scholarly journals A comparative study of Higgs boson production from vector-boson fusion

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
A. Buckley ◽  
X. Chen ◽  
J. Cruz-Martinez ◽  
S. Ferrario Ravasio ◽  
T. Gehrmann ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Vector Boson ◽  
Gluon Fusion ◽  
Boson Production ◽  
Vector Boson Fusion ◽  
Leading Order ◽  
Jet Production ◽  
Higgs Boson Production ◽  
Fixed Order ◽  
The Impact

Abstract The data taken in Run II at the Large Hadron Collider have started to probe Higgs boson production at high transverse momentum. Future data will provide a large sample of events with boosted Higgs boson topologies, allowing for a detailed understanding of electroweak Higgs boson plus two-jet production, and in particular the vector-boson fusion mode (VBF). We perform a detailed comparison of precision calculations for Higgs boson production in this channel, with particular emphasis on large Higgs boson transverse momenta, and on the jet radius dependence of the cross section. We study fixed-order predictions at next-to-leading order and next-to-next-to-leading order QCD, and compare the results to NLO plus parton shower (NLOPS) matched calculations. The impact of the NNLO corrections on the central predictions is mild, with inclusive scale uncertainties of the order of a few percent, which can increase with the imposition of kinematic cuts. We find good agreement between the fixed-order and matched calculations in non-Sudakov regions, and the various NLOPS predictions also agree well in the Sudakov regime. We analyze backgrounds to VBF Higgs boson production stemming from associated production, and from gluon-gluon fusion. At high Higgs boson transverse momenta, the ∆yjj and/or mjj cuts typically used to enhance the VBF signal over background lead to a reduced efficiency. We examine this effect as a function of the jet radius and using different definitions of the tagging jets. QCD radiative corrections increase for all Higgs production modes with increasing Higgs boson pT, but the proportionately larger increase in the gluon fusion channel results in a decrease of the gluon-gluon fusion background to electroweak Higgs plus two jet production upon requiring exclusive two-jet topologies. We study this effect in detail and contrast in particular a central jet veto with a global jet multiplicity requirement.

scholarly journals Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at $$ \sqrt{\mathrm{s}} $$ = 13 TeV

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
J. W. Andrejkovic ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Cross Sections ◽  
Top Quark ◽  
Production Cross ◽  
Vector Boson ◽  
Signal Strength ◽  
Gluon Fusion ◽  
Boson Production ◽  
Vector Boson Fusion ◽  
Higgs Boson Production

Abstract Measurements of Higgs boson production cross sections and couplings in events where the Higgs boson decays into a pair of photons are reported. Events are selected from a sample of proton-proton collisions at $$ \sqrt{s} $$ s = 13 TeV collected by the CMS detector at the LHC from 2016 to 2018, corresponding to an integrated luminosity of 137 fb−1. Analysis categories enriched in Higgs boson events produced via gluon fusion, vector boson fusion, vector boson associated production, and production associated with top quarks are constructed. The total Higgs boson signal strength, relative to the standard model (SM) prediction, is measured to be 1.12±0.09. Other properties of the Higgs boson are measured, including SM signal strength modifiers, production cross sections, and its couplings to other particles. These include the most precise measurements of gluon fusion and vector boson fusion Higgs boson production in several different kinematic regions, the first measurement of Higgs boson production in association with a top quark pair in five regions of the Higgs boson transverse momentum, and an upper limit on the rate of Higgs boson production in association with a single top quark. All results are found to be in agreement with the SM expectations.

scholarly journals Higgs boson production in association with a photon in vector boson fusion at the LHC

2007 ◽  
Vol 781 (1-3) ◽  
pp. 64-84 ◽  
Author(s):  
Emidio Gabrielli ◽  
Fabio Maltoni ◽  
Barbara Mele ◽  
Mauro Moretti ◽  
Fulvio Piccinini ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Vector Boson ◽  
Boson Production ◽  
Vector Boson Fusion ◽  
Higgs Boson Production

scholarly journals Next-to-Leading-Order QCD Corrections to Higgs Boson Production Plus Three Jets in Gluon Fusion

2013 ◽  
Vol 111 (13) ◽  
Author(s):  
G. Cullen ◽  
H. van Deurzen ◽  
N. Greiner ◽  
G. Luisoni ◽  
P. Mastrolia ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Gluon Fusion ◽  
Boson Production ◽  
Leading Order ◽  
Higgs Boson Production

scholarly journals Multi-Higgs boson production and unitarity in vector-boson fusion at future hadron colliders

2020 ◽  
Vol 101 (7) ◽  
Author(s):  
Wolfgang Kilian ◽  
Sichun Sun ◽  
Qi-Shu Yan ◽  
Xiaoran Zhao ◽  
Zhijie Zhao
Keyword(s):  
Higgs Boson ◽  
Vector Boson ◽  
Boson Production ◽  
Vector Boson Fusion ◽  
Hadron Colliders ◽  
Higgs Boson Production

scholarly journals Higher-order power corrections in a transverse-momentum cut for colour-singlet production at NLO

2019 ◽  
Vol 79 (10) ◽  
Author(s):  
Leandro Cieri ◽  
Carlo Oleari ◽  
Marco Rocco
Keyword(s):  
Higgs Boson ◽  
Transverse Momentum ◽  
Cross Section ◽  
Gluon Fusion ◽  
Fourth Power ◽  
Power Correction ◽  
Boson Production ◽  
Higgs Boson Production ◽  
Power Corrections ◽  
The Impact

Abstract We consider the production of a colourless system at next-to-leading order in the strong coupling constant $$\alpha _{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{S}}$$αS. We impose a transverse-momentum cutoff, $$q_{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{T}}^{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{cut}}$$qTcut, on the colourless final state and we compute the power corrections for the inclusive cross section in the cutoff, up to the fourth power. The study of the dependence of the cross section on $$q_{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{T}}^{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{cut}}$$qTcut allows for an understanding of its behaviour at the boundaries of the phase space, giving hints on the structure at all orders in $$\alpha _{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{S}}$$αS and on the identification of universal patterns. The knowledge of such power corrections is also a required ingredient in order to reduce the dependence on the transverse-momentum cutoff of the QCD cross sections at higher orders, when the $$q_{\mathrm{T}}$$qT-subtraction method is applied. We present analytic results for both Drell–Yan vector boson and Higgs boson production in gluon fusion and we illustrate a process-independent procedure for the calculation of the all-order power corrections in the cutoff. In order to show the impact of the power-correction terms, we present selected numerical results and discuss how the residual dependence on $$q_{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{T}}^{{\displaystyle } {\scriptstyle } {\scriptscriptstyle } {\scriptscriptstyle } \mathrm{cut}}$$qTcut affects the total cross section for Drell–Yan Z production and Higgs boson production via gluon fusion at the LHC.

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