scholarly journals Drell-Yan forward-backward and spin asymmetries for arbitrary vector boson production at next-to-leading order

1998 ◽  
Vol 57 (11) ◽  
pp. 6663-6691 ◽  
Author(s):  
B. Kamal
Keyword(s):  
Vector Boson ◽  
Boson Production ◽  
Leading Order ◽  
Arbitrary Vector ◽  
Spin Asymmetries

scholarly journals Spin asymmetries for vector boson production in polarizedp+pcollisions

2016 ◽  
Vol 93 (1) ◽  
Author(s):  
Jin Huang ◽  
Zhong-Bo Kang ◽  
Ivan Vitev ◽  
Hongxi Xing
Keyword(s):  
Vector Boson ◽  
Boson Production ◽  
Spin Asymmetries

scholarly journals Parton-shower effects in Higgs production via vector-boson fusion

2020 ◽  
Vol 80 (8) ◽  
Author(s):  
Barbara Jäger ◽  
Alexander Karlberg ◽  
Simon Plätzer ◽  
Johannes Scheller ◽  
Marco Zaro
Keyword(s):  
Monte Carlo ◽  
Higgs Boson ◽  
Radiation Effects ◽  
Parton Shower ◽  
Vector Boson ◽  
Systematic Investigation ◽  
Boson Production ◽  
Vector Boson Fusion ◽  
Leading Order ◽  
Sources Of Uncertainty

Abstract We present a systematic investigation of parton-shower and matching uncertainties of perturbative origin for Higgs-boson production via vector-boson fusion. To this end we employ different generators at next-to-leading order QCD accuracy matched with shower Monte Carlo programs, , and , and a next-to-next-to-leading order QCD calculation. We thoroughly analyse the intrinsic sources of uncertainty within each generator, and then compare predictions among the different tools using the respective recommended setups. Within typical vector-boson fusion cuts, the resulting uncertainties on observables that are accurate to next-to-leading order are at the 10% level for rates and even smaller for shapes. For observables sensitive to extra radiation effects uncertainties of about 20% are found. We furthermore show how a specific recoil scheme is needed when is employed, in order not to encounter unphysical enhancements for these observables. We conclude that for vector-boson fusion processes an assessment of the uncertainties associated with simulation at next-to-leading order matched to parton showers based only on the variation of renormalisation, factorisation and shower scales systematically underestimates their true size.

scholarly journals Vector Boson Production at Hadron Colliders: A Fully Exclusive QCD Calculation at Next-to-Next-to-Leading Order

2009 ◽  
Vol 103 (8) ◽  
Author(s):  
Stefano Catani ◽  
Leandro Cieri ◽  
Giancarlo Ferrera ◽  
Daniel de Florian ◽  
Massimiliano Grazzini
Keyword(s):  
Vector Boson ◽  
Boson Production ◽  
Leading Order ◽  
Hadron Colliders

scholarly journals Electroweak corrections to the angular coefficients in finite-$$p_T$$ Z-boson production and dilepton decay

2020 ◽  
Vol 80 (10) ◽  
Author(s):  
Rikkert Frederix ◽  
Timea Vitos
Keyword(s):  
Transverse Momentum ◽  
Z Boson ◽  
Significant Contribution ◽  
Vector Boson ◽  
Relative Size ◽  
Boson Mass ◽  
Boson Production ◽  
Leading Order ◽  
Space Case ◽  
Electroweak Corrections

AbstractWe present next-to-leading order (NLO) electroweak corrections to the dominant five angular coefficients parametrizing the Drell–Yan process in the Z-boson mass peak range for finite-$$p_T$$ p T vector boson production. The results are presented differentially in the vector boson transverse momentum. The Lam–Tung violating difference $$A_0-A_2$$ A 0 - A 2 is examined alongside the coefficients. A single lepton transverse momentum cut is needed in the case of electroweak corrections to avoid a double singularity in the photon induced diagrams, and the dependence on the value of this cut is examined. We compare the electroweak corrections to the angular coefficients to the NLO QCD corrections, including the single lepton cut. The size of the single lepton cut is found to affect the two coefficients $$A_0$$ A 0 and $$A_2$$ A 2 to largest extent. The relative size of the electroweak corrections to the coefficients is moderate for all single lepton cut values, and by extrapolation to the inclusive results, is moderate also for the full dilepton phase space case. However, for the Lam–Tung violation, there is a significant contribution from the electroweak corrections for low $$p_T$$ p T of the lepton pair.

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.

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