Photon-gluon fusion at HERA: measurement of the fractional momentum of the gluon in lowQ 2 events

1990 ◽  
Vol 48 (3) ◽  
pp. 467-470 ◽  
Author(s):  
G. D'Agostini ◽  
D. Monaldi
Keyword(s):  
Gluon Fusion ◽  
Fractional Momentum

scholarly journals Boosting invisible Higgs boson searches by tagging a gluon jet for the gluon fusion process

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
Won Sang Cho ◽  
Hyung Do Kim ◽  
Dongsub Lee
Keyword(s):  
Higgs Boson ◽  
Gluon Fusion ◽  
Fusion Process

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.

scholarly journals Leading-logarithmic threshold resummation of Higgs production in gluon fusion at next-to-leading power

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Martin Beneke ◽  
Mathias Garny ◽  
Sebastian Jaskiewicz ◽  
Robert Szafron ◽  
Leonardo Vernazza ◽  
...  
Keyword(s):  
Gluon Fusion ◽  
Higgs Production ◽  
Threshold Resummation

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 Diphoton production in gluon fusion at small transverse momentum

2003 ◽  
Vol 558 (1-2) ◽  
pp. 63-68 ◽  
Author(s):  
P.M. Nadolsky ◽  
C.R. Schmidt
Keyword(s):  
Transverse Momentum ◽  
Gluon Fusion

scholarly journals Dark scalars and heavy neutral leptons at DarkQuest

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Brian Batell ◽  
Jared A. Evans ◽  
Stefania Gori ◽  
Mudit Rai
Keyword(s):  
Particle Production ◽  
Meson Production ◽  
Gluon Fusion ◽  
New Physics ◽  
Dark Sector ◽  
Hidden Sector ◽  
Detector Acceptance ◽  
Light Scalar ◽  
Near Term

Abstract The proposed DarkQuest beam dump experiment, a modest upgrade to the existing SeaQuest/SpinQuest experiment, has great potential for uncovering new physics within a dark sector. We explore both the near-term and long-term prospects for observing two distinct, highly-motivated hidden sector benchmark models: heavy neutral leptons and Higgs-mixed scalars. We comprehensively examine the particle production and detector acceptance at DarkQuest, including an updated treatment of meson production, and light scalar production through both bremsstrahlung and gluon-gluon fusion. In both benchmark models, DarkQuest will provide an opportunity to probe previously inaccessible interesting regions of parameter space on a fairly short timescale when compared to other proposed experiments.

scholarly journals Higgs boson production via gluon fusion: Squark loops at NLO QCD

2008 ◽  
Vol 790 (1-2) ◽  
pp. 1-27 ◽  
Author(s):  
Margarete Mühlleitner ◽  
Michael Spira
Keyword(s):  
Higgs Boson ◽  
Gluon Fusion ◽  
Boson Production ◽  
Higgs Boson Production

scholarly journals High energy QCD: multiplicity dependence of quarkonia production

2021 ◽  
Vol 81 (2) ◽  
Author(s):  
E. Gotsman ◽  
E. Levin
Keyword(s):  
Experimental Data ◽  
Gluon Fusion ◽  
High Energy ◽  
Saturation Scale

AbstractIn this paper we propose an approach which demonstrates the dependence of quarkonia production on the multiplicity of the accompanying hadrons. Our approach is based on the three gluon fusion mechanism, without assuming the multiplicity dependence of the saturation scale. We show, that we describe the experimental data, which has a dependence that is much steeper than the multiplicity of the hadrons.

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
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