Results 61 to 70 of about 1,070 (198)

Recent news and results in the computation of NLO processes with new techniques [PDF]

open access: yesFortschritte der Physik, 2011
AbstractI illustrate new techniques and recently obtained results in the computation of perturbative QCD processes at the NLO accuracy.
openaire   +2 more sources

Measurement of the top quark pair production cross section in pp collisions at √s=7  TeV in dilepton final states with ATLAS [PDF]

open access: yes, 2012
A measurement of the production cross section of top quark pairs (t<span style="text-decoration: overline">t</span>) in proton–proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider
Alessandria, F   +999 more
core   +1 more source

Automated one-loop computations in the SMEFT [PDF]

open access: yes, 2020
We present the automation of one-loop computations in the standard-model effective field theory at dimension 6. Our general implementation, dubbed smeft@nlo, covers all types of operators: bosonic and two- and four-fermion ones.
Zhang, Cen   +5 more
core   +1 more source

Measurement of the production cross section of prompt J/ψ mesons in association with a W± boson in pp collisions at p s = 7 TeV with the ATLAS detector [PDF]

open access: yes, 2014
The process pp → W±J/ψ provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons.
Farrington, Sinead   +6 more
core   +1 more source

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

Computation of NLO processes involving heavy quarks using Loop-Tree Duality [PDF]

open access: yesAIP Conference Proceedings, 2017
We present a new method to compute higher-order corrections to physical cross-sections, at Next-to-Leading Order and beyond. This method, based on the Loop Tree Duality, leads to locally integrable expressions in four dimensions. By introducing a physically motivated momentum mapping between the momenta involved in the real and the virtual ...
openaire   +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

Measurement of the cross-section for W boson production in association with b-jets in pp collisions at √s=7 TeV with the ATLAS detector [PDF]

open access: yes, 2013
This paper reports a measurement of the W +b-jets (W +b+ X and W + bb¯ +X) production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. These results are based on data corresponding to an integrated luminosity of 4.
Farrington, Sinead   +2 more
core   +1 more source

Spectral density of the Hermitean Wilson Dirac operator: a NLO computation in chiral perturbation theory [PDF]

open access: yesJournal of High Energy Physics, 2011
27 pages, 4 figures; few typos corrected, added footnote, published ...
Necco, Silvia, Shindler, Andrea
openaire   +2 more sources

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