Combining higher-order resummation with multiple NLO calculations and parton showers in GENEVA [PDF]
Journal of High Energy Physics, 2013 We extend the lowest-order matching of tree-level matrix elements with parton showers to give a complete description at the next higher perturbative accuracy in α s at both small and large jet resolutions, which has not been achieved so far.
Bauer, Christian W. +7 more
core +4 more sources
Progress in Surface Science, 2003 Surface energies of aluminium ((1 1 1), (1 1 0) and (1 0 0)) were calculated in second-order perturbation theory based on the jellium model, and by full atomistic models using a Gaussian basis set, in the framework of density functional theory.
CARLOS Fiolhais, Celia Henriques
exaly +4 more sources
Multi-Instantons and Exact Results Ii: Specific Cases, Higher-Order Effects, and Numerical Calculations [PDF]
, 2004 In this second part of the treatment of instantons in quantum mechanics, the focus is on specific calculations related to a number of quantum mechanical potentials with degenerate minima.
Zinn-Justin, Jean, Jentschura, Ulrich D.
core +2 more sources
One-loop transverse-momentum-dependent soft function at higher orders in the dimensional regulator
Journal of High Energy PhysicsThe transverse-momentum-dependent (TMD) soft function for a generic hadroproduction process involving massive colored particles is analytically calculated at the one-loop level, extended to higher orders in the dimensional regulator ϵ.
Hua-Sheng Shao, Guoxing Wang
doaj +2 more sources
Perturbative background to Monte Carlo calculations in lattice gauge theories
Nuclear Physics B, 1984 Perturbative corrections to Wilson loops are computed up to order g4 on lattices of several sizes. A renormalization group improvement of the perturbative expansions for χ(I, J) is discussed.
G Curci, G Paffuti, R Tripiccione
exaly +2 more sources
Precise perturbative predictions from fixed-order calculations [PDF]
Journal of Physics G: Nuclear and Particle Physics, 2022 The intrinsic conformality is a general property of the renormalizable gauge theory, which ensures the scale-invariance of a fixed-order perturbative series at each perturbative order.
Jiang Yan +3 more
semanticscholar +1 more source
Nonperturbative and higher order perturbative effects in deep inelastic ντ/ν¯τ -nucleon scattering [PDF]
Physical Review D, 2020 The effect of nonperturbative and higher order perturbative corrections to all the free nucleon structure functions ($F_{iN}(x,Q^2); i=1-5$) in the DIS of $\nu_\tau/{\bar\nu}_\tau$ on nucleon is studied. The target mass correction (TMC) and higher twist
V. Ansari +4 more
semanticscholar +1 more source
CP asymmetries and higher-order unitarity relations [PDF]
Physical Review D, 2021 The main focus of this paper is to introduce a new method to control perturbative calculations of CP asymmetric reaction rates in Boltzmann equation. CP asymmetries in particle reactions are traditionally calculated in terms of complex couplings, Feynman
T. Blažek, Peter Mat'ak
semanticscholar +1 more source
Parametrized post-Newtonian formalism in higher-order Teleparallel Gravity [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 We study the parametrized post-Newtonian (PPN) limit of higher-derivative-torsion Modified Teleparallel Gravity. We start from the covariant formulation of modified Teleparallel Gravity by restoring the spin connection of the theory. Then, we perform the
M. Gonzalez-Espinoza +3 more
semanticscholar +1 more source
Higher-order perturbative coefficients in QCD from series acceleration by conformal mappings [PDF]
Physical Review D, 2019 The present calculations in perturbative QCD reach the order $\alpha_s^4$ for several correlators calculated to five loops, and the huge computational difficulties make unlikely the full six-loop calculation in the near future.
I. Caprini
semanticscholar +1 more source