Results 61 to 70 of about 17,630 (246)

R2 vertices for the effective ggH theory

, 2013
We list all possible R2 Feynman rules needed in NLO computations involving couplings of Higgs and gluons mediated by an infinitely heavy top loop. They provide the rational contribution generated by the (d-4)-dimensional part of the amplitude, paving the
Page, Ben, Pittau, Roberto
core   +1 more source

Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties [PDF]

, 2011
We use aMC@NLO to study the production of four charged leptons at the LHC, performing parton showers with both HERWIG and Pythia6. Our underlying matrix element calculation features the full next-to-leading order $O(\alpha_S)$ result and the $O(\alpha_S ...
A Martin, B Mele, DA Dicus, E Glover, E Glover, Fabio Maltoni, G Corcella, G Ossola, G Ossola, J Alwall, J Alwall, J Ohnemus, JM Campbell, JM Campbell, JM Campbell, LJ Dixon, LJ Dixon, P Torrielli, Paolo Torrielli, R Frederix, R Frederix, R Frederix, R Frederix, Rikkert Frederix, Roberto Pittau, S Frixione, S Frixione, S Frixione, Stefano Frixione, T Binoth, T Melia, T Sjöstrand, V Hirschi, Valentin Hirschi   +33 more
core   +3 more sources

Gluon fragmentation into quarkonium at next-to-leading order using FKS subtraction

Journal of High Energy Physics, 2019
We present the calculation at next-to-leading order (NLO) in α s of the fragmentation function of a gluon into heavy quarkonium in the color-octet spin-singlet S-wave channel.
Pierre Artoisenet, Eric Braaten
doaj   +1 more source

Thermal dilepton production from hot QCD

, 2015
NLO and LPM-resummed computations of thermal dilepton production from a hot QCD plasma are reviewed. An interpolation applicable for all positive photon invariant masses is presented, and possibilities for comparisons with lattice and experimental data ...
Laine, M.
core   +1 more source

Theory versus experiments in heavy flavour production [PDF]

, 2001
I discuss the current status of the comparison between theoretical predictions and experimental data, relevant to the production of open charm and bottom quarks in photon-hadron and photon-photon collisions. I advocate the use of a formalism that matches
Frixione, S.
core   +2 more sources

NLO QCD+EW predictions for HV and HV +jet production including parton-shower effects

Journal of High Energy Physics, 2017
We present the first NLO QCD+EW predictions for Higgs boson production in association with a ℓν ℓ or ℓ + ℓ − pair plus zero or one jets at the LHC. Fixed-order NLO QCD+EW calculations are combined with a QCD+QED parton shower using the recently developed
F. Granata, J. M. Lindert, C. Oleari, S. Pozzorini   +3 more
doaj   +1 more source

Total cross sections of eγ → eX X ¯ $$ eX\overline{X} $$ processes with X = μ, γ, e via multiloop methods

Journal of High Energy Physics, 2021
Using modern multiloop calculation methods, we derive the analytical expressions for the total cross sections of the processes e − γ → e − X X ¯ $$ {e}^{-}X\overline{X} $$ with X = μ, γ or e at arbitrary energies.
Roman N. Lee, Alexey A. Lyubyakin, Vyacheslav A. Stotsky   +2 more
doaj   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

The one-loop amplitudes for Higgs + 4 partons with full mass effects

Journal of High Energy Physics, 2020
We present compact analytic formulae for the one-loop amplitudes for Higgs + 4 parton scattering, 0 → ggggh, 0 → q ¯ $$ \overline{q} $$ qggh and 0 → q ¯ $$ \overline{q} $$ q q ¯ ′ $$ {\overline{q}}^{\prime } $$ q′h, mediated by a loop of massive coloured
Lucy Budge, John M. Campbell, Giuseppe De Laurentis, R. Keith Ellis, Satyajit Seth   +4 more
doaj   +1 more source

Numerical integration of loop integrals through local cancellation of threshold singularities

Journal of High Energy Physics, 2022
We propose a new approach that allows for the separate numerical calculation of the real and imaginary parts of finite loop integrals. We find that at one-loop the real part is given by the Loop-Tree Duality integral supplemented with suitable ...
D. Kermanschah
doaj   +1 more source