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Automatic Integral Reduction for Higher Order Perturbative Calculations [PDF]
Journal of High Energy Physics, 2004 23 ...
Charalampos Anastasiou +1 more
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Higher order perturbative QCD calculation of jet cross sections ine + e − annihilation
Zeitschrift für Physik C Particles and Fields, 1982 We present in detail the analytic calculation of the Sterman-Weinberg type 3-jet cross section to order αs2 The fit to recent PLUTO data gives in the\({MS}\) scheme αs which corresponds to Λ=0.24 GeV in the 1-loop approximation.
K. Fabricius +3 more
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An analysis of Bayesian estimates for missing higher orders in perturbative calculations [PDF]
Journal of High Energy Physics, 2021 Abstract With current high precision collider data, the reliable estimation of theoretical uncertainties due to missing higher orders (MHOs) in perturbation theory has become a pressing issue for collider phenomenology. Traditionally, the size of the MHOs is estimated through scale variation, a simple but ad hoc method without ...
Claude Duhr +3 more
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Journal of High Energy Physics, 2022 The master integrals for the mixed QCD-QED two-loop virtual corrections to the charged-current Drell-Yan process q q ¯ $$ q\overline{q} $$ ′ → ℓν are computed analytically by using the differential equation method.
Ming-Ming Long +6 more
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The parton-level structure of e+e − to 2 jets at N3LO
Journal of High Energy Physics, 2023 We investigate the quantum chromodynamics (QCD) corrections to hadronic final states in electron-positron collisions at O $$ \mathcal{O} $$ ( α s 3 $$ {\alpha}_s^3 $$ ) in the strong coupling constant α s . Namely, we analytically compute the total cross
Petr Jakubčík +2 more
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Two-loop tensor integral coefficients in OpenLoops
Journal of High Energy Physics, 2022 We present a new and fully general algorithm for the automated construction of the integrands of two-loop scattering amplitudes. This is achieved through a generalisation of the open-loops method to two loops.
Stefano Pozzorini +2 more
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Higher Order Perturbation Method in Reactor Calculation [PDF]
Journal of Nuclear Science and Technology, 1969 The higher order perturbation theory is applied to the one-dimensional multi-group diffusion equation. The method of calculating the eigenvalue, eigenfunction and adjoint function of the higher mode is established for a non-Hermetian matrix. The diffusion equation is solved by the higher order perturbation method, through the use of the eigenvalues ...
Reiko SAITO, Satoru KATSURAGI
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A general algorithm to build mixed real and virtual antenna functions for higher-order calculations
Journal of High Energy Physics, 2023 The antenna-subtraction technique has demonstrated remarkable effectiveness in providing next-to-next-to-leading order in α s (NNLO) predictions for a wide range of processes relevant for the Large Hadron Collider.
Oscar Braun-White +2 more
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NLO computation of diffractive di-hadron production in a saturation framework
Journal of High Energy Physics, 2023 The cross-sections of diffractive double hadron photo- or electroproduction with large p T , on a nucleon or a nucleus, are calculated to NLO accuracy.
Michael Fucilla +4 more
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One-loop matrix element emulation with factorisation awareness
Journal of High Energy Physics, 2023 In this article we present an emulation strategy for one-loop matrix elements. This strategy is based on the factorisation properties of matrix elements and is an extension of the work presented in [1].
D. Maître, H. Truong
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