Results 11 to 20 of about 3,650 (244)
Building blocks of Cwebs in multiparton scattering amplitudes
Journal of High Energy Physics, 2022 The correlators of Wilson-line operators in non-abelian gauge theories are known to exponentiate, and their logarithms can be organised in terms of the collections of Feynman diagrams called Cwebs.
Neelima Agarwal +3 more
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Double-real-virtual and double-virtual-real corrections to the three-loop thrust soft function
Journal of High Energy Physics, 2022 We compute the O $$ \mathcal{O} $$ ( α s 3 $$ {\alpha}_s^3 $$ ) double-real-virtual (RRV) and double-virtual-real (VVR) soft contributions to the thrust/zero-jettiness event shape.
Wen Chen, Feng Feng, Yu Jia, Xiaohui Liu
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An extensive survey of the estimation of uncertainties from missing higher orders in perturbative calculations [PDF]
Journal of High Energy Physics, 2015 We consider two approaches to estimate and characterise the theoretical uncertainties stemming from the missing higher orders in perturbative calculations in Quantum Chromodynamics: the traditional one based on renormalisation and factorisation scale variation, and the Bayesian framework proposed by Cacciari and Houdeau.
Bagnaschi, Emanuele +3 more
openaire +5 more sources
One-loop Lipatov vertex in QCD with higher ϵ-accuracy
Journal of High Energy Physics, 2023 The effective Reggeon-Reggeon-gluon vertex, known as Lipatov vertex, is the key ingredient that allows to develop the BFKL approach in QCD. Within the next-to-leading logarithmic approximation, it is sufficient to know its one-loop corrections, in ...
Victor S. Fadin +2 more
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Tensor reduction of loop integrals
Journal of High Energy Physics, 2023 The computational cost associated with reducing tensor integrals to scalar integrals using the Passarino-Veltman method is dominated by the diagonalisation of large systems of equations.
Charalampos Anastasiou +2 more
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Transverse momentum resummation at N3LL+NNLO for diboson processes
Journal of High Energy Physics, 2023 Diboson processes are one of the most accessible and stringent probes of the electroweak gauge structure of the Standard Model at the LHC. They will be probed at the percent level at the high-luminosity LHC, challenging current theory predictions.
John M. Campbell +3 more
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Deciphering colour building blocks of massive multiparton amplitudes at 4-loops and beyond
Journal of High Energy Physics, 2023 The soft function in non-abelian gauge theories exponentiate, and their logarithms can be organised in terms of the collections of Feynman diagrams called Cwebs.
Neelima Agarwal +3 more
doaj +1 more source
Journal of High Energy Physics, 2023 We consider Drell-Yan production and QCD-induced diphoton production and compute their rapidity distributions up to next-to-leading power (NLP) in the threshold variable.
Robin van Bijleveld +3 more
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Journal of High Energy Physics, 2022 We compute the two-loop mixed QCD-Electroweak corrections to q q ¯ $$ q\overline{q} $$ → Hg and its crossed channels qg → Hq, q ¯ g $$ \overline{q}g $$ → H q ¯ $$ H\overline{q} $$ , limiting ourselves to the contribution of light virtual quarks.
Marco Bonetti +2 more
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Three-loop master integrals for the Higgs boson self-energy with internal top-quarks and W-bosons
Journal of High Energy Physics, 2022 We consider the full set of master integrals with internal top-and W-propagators contributing to the three-loop Higgs self-energy diagrams of order O $$ \mathcal{O} $$ (α 2 α s ).
Ekta Chaubey +2 more
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