Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Leonardo Vernazza"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-58 (2024)
Abstract In this paper, we show that multiple maximally soft (anti-)quark and gluon emissions exponentiate at the level of either the amplitude or cross-section. We first show that such emissions can be captured by introducing new soft emission opera
Externí odkaz:
https://doaj.org/article/77deaa5361b74139b00d26b13d67ea9a
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-50 (2024)
Abstract We perform an analysis of the one- and two-loop massive quark form factor in QED in a region expansion, up to next-to-leading power in the quark mass. This yields an extensive set of regional integrals, categorized into three topologies, aga
Externí odkaz:
https://doaj.org/article/3502292d0fdf44d5b1763e57a6fa12c0
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 12, Pp 1-42 (2023)
Abstract We present a factorization theorem of the partonic Drell-Yan off-diagonal processes g q ¯ qg → γ ∗ + X $$ g\overline{q}(qg)\to {\gamma}^{\ast }+X $$ in the kinematic threshold regime z = Q 2 / s ̂ → 1 $$ z={Q}^2/\hat{s}\to 1 $$ at g
Externí odkaz:
https://doaj.org/article/f8876ec5ba2b441eaff421cc313ee7b7
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-49 (2023)
Abstract 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. We give results for rapidity distributions of the Drell-Yan process up
Externí odkaz:
https://doaj.org/article/b096f74482124692b6e544e60ce95f5d
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-134 (2022)
Abstract Using rapidity evolution equations we study two-to-two gauge-theory scattering amplitudes in the Regge limit. We carry out explicit computations at next-to-next-to-leading logarithmic accuracy through four loops and present new results for b
Externí odkaz:
https://doaj.org/article/cc9d9f5859dd44298d964ed00a19ee43
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-50 (2021)
Abstract Collider observables involving heavy particles are subject to large logarithmic terms near threshold, which must be summed to all orders in perturbation theory to obtain sensible results. Relatively recently, this resummation has been extend
Externí odkaz:
https://doaj.org/article/3c5a4424fadc44aba3cbd8d691df567b
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-31 (2021)
Abstract We calculate the generalized soft functions at O $$ \mathcal{O} $$ ( α s 2 $$ {\alpha}_s^2 $$ ) at next-to-leading power accuracy for the Drell-Yan process at threshold. The operator definitions of these objects contain explicit insertions
Externí odkaz:
https://doaj.org/article/d89286505fea4f1eb7fef9d4b082f73f
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-59 (2021)
Abstract We study next-to-leading-power (NLP) threshold corrections in colour-singlet production processes, with particular emphasis on Drell-Yan (DY) and single-Higgs production. We assess the quality of the partonic and hadronic threshold expansion
Externí odkaz:
https://doaj.org/article/5c635275eb26413f832df370490c56d7
Autor:
Martin Beneke, Mathias Garny, Sebastian Jaskiewicz, Robert Szafron, Leonardo Vernazza, Jian Wang
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 10, Pp 1-49 (2020)
Abstract The off-diagonal parton-scattering channels g + γ * and q + ϕ * in deep-inelastic scattering are power-suppressed near threshold x → 1. We address the next-to-leading power (NLP) resummation of large double logarithms of 1 − x to all o
Externí odkaz:
https://doaj.org/article/b6b353c78ad84ac290a520d3a752d877
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 8, Pp 1-75 (2020)
Abstract We study two-to-two parton scattering amplitudes in the high-energy limit of perturbative QCD by iteratively solving the BFKL equation. This allows us to predict the imaginary part of the amplitude to leading-logarithmic order for arbitrary
Externí odkaz:
https://doaj.org/article/a58ce7d5ffba4bca845e28517c86cd6d