Results 61 to 70 of about 17,573 (205)

Deriving canonical differential equations for Feynman integrals from a single uniform weight integral

open access: yesJournal of High Energy Physics, 2020
Differential equations are a powerful tool for evaluating Feynman integrals. Their solution is straightforward if a transformation to a canonical form is found. In this paper, we present an algorithm for finding such a transformation.
Christoph Dlapa, Johannes Henn, Kai Yan
doaj   +1 more source

How accurately can we measure the W cross section?

open access: yes, 2004
We study the QCD sources of systematic uncertainties in the experimental extraction of the W cross section at hadron colliders. The uncertainties appear in the evaluation of the detector acceptances used to convert the number of observed events into a ...
C. Anastasiou   +20 more
core   +2 more sources

Reaching NNLOPS accuracy with POWHEG and MiNLO [PDF]

open access: yes, 2014
We describe how a simulation of Higgs boson production accurate at next-to-next-to-leading order and matched to a parton shower can be built by combining the POWHEG and MiNLO methods and using HNNLO results as input.Comment: 6 pages, 2 figures. Submitted
Re, Emanuele
core   +2 more sources

Calculating loops without loop calculations: NLO computation of pentaquark correlators

open access: yes, 2011
23 pages, 1 figure, published version.
Groote, S.   +2 more
openaire   +2 more sources

Track 3: Computations in theoretical physics -- techniques and methods

open access: yes, 2016
Here, we attempt to summarize the activities of Track 3 of the 17th International Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT 2016).Comment: 10 pages, 3 figures, to appear in the proceedings of ACAT ...
Luisoni, Gionata   +2 more
core   +1 more source

Theory versus experiments in heavy flavour production [PDF]

open access: yes, 2001
I discuss the current status of the comparison between theoretical predictions and experimental data, relevant to the production of open charm and bottom quarks in photon-hadron and photon-photon collisions. I advocate the use of a formalism that matches
Frixione, S.
core   +2 more sources

Two-loop amplitudes for Higgs plus jet production involving a modified trilinear Higgs coupling

open access: yesJournal of High Energy Physics, 2019
We calculate the contributions to the two-loop scattering amplitudes h → gg, h → ggg and h → q q ¯ g $$ h\to q\overline{q}g $$ that arise from a modified trilinear Higgs coupling λ.
Martin Gorbahn, Ulrich Haisch
doaj   +1 more source

Two-loop QCD-EW master integrals for Z plus jet production at large transverse momentum

open access: yesJournal of High Energy Physics, 2020
The production of electroweak Z bosons that decay to neutrinos and recoil against jets with large transverse momentum p ⊥ is an important background process to searches for dark matter at the Large Hadron Collider (LHC).
Hjalte Frellesvig   +2 more
doaj   +1 more source

Subtraction at NNLO

open access: yes, 2004
We propose a framework for the implementation of a subtraction formalism at NNLO in QCD, based on an observable- and process-independent cancellation of infrared singularities. As a first simple application, we present the calculation of the contribution
C. Anastasiou   +15 more
core   +1 more source

Recent progress in QCD calculations for e^+e^- annihilation and hadron collisions [PDF]

open access: yes, 2011
We provide a brief summary of recent developments in QCD calculations in and beyond fixed-order perturbation theory, for observables in $e^{+}e^{-}$ annihilation as well as hadron collisions.Comment: 9 pages, invited review talk at the meeting LC 10 ...
Dasgupta, Mrinal
core   +2 more sources

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