Results 11 to 20 of about 17,639 (221)

The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations [PDF]

Journal of High Energy Physics, 2014
We discuss the theoretical bases that underpin the automation of the computations of tree-level and next-to-leading order cross sections, of their matching to parton shower simulations, and of the merging of matched samples that differ by light-parton ...
Stefano Frixione
exaly   +8 more sources

The automation of next-to-leading order electroweak calculations

Journal of High Energy Physics, 2018
We present the key features relevant to the automated computation of all the leading- and next-to-leading order contributions to short-distance cross sections in a mixed-coupling expansion, with special emphasis on the first subleading NLO term in the ...
R. Frederix, S. Frixione, V. Hirschi, D. Pagani, H.-S. Shao, M. Zaro   +5 more
doaj   +4 more sources

Off-shell production of top-antitop pairs in the lepton+jets channel at NLO QCD

Journal of High Energy Physics, 2018
The production of top-quark pairs that subsequently decay hadronically and leptonically (lepton+jets channel) is one of the key processes for the study of top-quark properties at the LHC. In this article, NLO QCD corrections of order Oαs3α4 $$ \mathcal{O}
Ansgar Denner, Mathieu Pellen
doaj   +3 more sources

Two-loop master integrals for the leading QCD corrections to the Higgs coupling to a W pair and to the triple gauge couplings ZW W and γ∗ W W

Journal of High Energy Physics, 2017
We compute the two-loop master integrals required for the leading QCD corrections to the interaction vertex of a massive neutral boson X 0, e.g. H, Z or γ∗, with a pair of W bosons, mediated by a SU(2) L quark doublet composed of one massive and one ...
Stefano Di Vita, Pierpaolo Mastrolia, Amedeo Primo, Ulrich Schubert   +3 more
doaj   +1 more source

Functional reduction of Feynman integrals

Journal of High Energy Physics, 2019
A method for reducing Feynman integrals, depending on several kinematic variables and masses, to a combination of integrals with fewer variables is proposed. The method is based on iterative application of functional equations proposed by the author. The
O. V. Tarasov
doaj   +1 more source

Relic density computations at NLO: infrared finiteness and thermal correction [PDF]

Journal of High Energy Physics, 2014
Abstract There is an increasing interest in accurate dark matter relic density predictions, which requires next-to-leading order (NLO) calculations. The method applied up to now uses zero-temperature NLO calculations of annihilation cross sections in the standard Boltzmann equation for freeze-out, and is conceptually ...
Beneke, Martin, Dighera, Francesco, Hryczuk, Andrzej   +2 more
openaire   +3 more sources

Computational framework for steady-state NLOS localization under changing ambient illumination conditions

Optics Express, 2022
Non-line-of-sight (NLOS) imaging of hidden objects is a challenging yet vital task, facilitating important applications such as rescue operations, medical imaging, and autonomous driving. In this paper, we attempt to develop a computational steady-state NLOS localization framework that works accurately and robustly under various illumination conditions.
Yanpeng Cao, Rui Liang, Jiangxin Yang, Yanlong Cao, Zewei He, Jian Chen, Xin Li   +6 more
openaire   +2 more sources

Resummed photon spectrum from dark matter annihilation for intermediate and narrow energy resolution

Journal of High Energy Physics, 2019
The annihilation cross section of weakly interacting TeV scale dark matter particles χ 0 into photons is affected by large quantum corrections due to electroweak Sudakov logarithms and the Sommerfeld effect. We extend our previous work on the resummation
M. Beneke, A. Broggio, C. Hasner, K. Urban, M. Vollmann   +4 more
doaj   +1 more source

Polarized q q ¯ $$ \mathrm{q}\overline{\mathrm{q}} $$ → Z+Higgs amplitudes at two loops in QCD: the interplay between vector and axial vector form factors and a pitfall in applying a non-anticommuting γ 5

Journal of High Energy Physics, 2020
We consider QCD corrections to two loops for the polarized amplitudes of q q ¯ $$ q\overline{q} $$ → Z + Higgs boson. First we show how the polarized amplitudes of b b ¯ $$ b\overline{b} $$ → Zh associated with a non-vanishing b-quark Yukawa coupling and
Taushif Ahmed, Werner Bernreuther, Long Chen, Michał Czakon   +3 more
doaj   +1 more source

The BlackHat Library for One-Loop Amplitudes [PDF]

, 2013
We present recent next-to-leading order (NLO) results in perturbative QCD obtained using the BlackHat software library. We discuss the use of n-tuples to separate the lengthy matrix-element computations from the analysis process.
Bern, Z., Cordero, F. Febres, Dixon, L. J., Hoeche, S., Ita, H., Kosower, D. A., Maitre, D., Ozeren, K. J.   +7 more
core   +2 more sources