Results 21 to 30 of about 17,639 (237)
From dimensional regularization to NLO computations in four dimensions [PDF]
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2015), 2016 Loop-tree duality (LTD) allows to express virtual contributions in terms of phase-space integrals, thus leading to a direct mapping with real radiation terms. We review the basis of the method and describe its application to regularize Feynman integrals.
Germán F. R. Sborlini
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Computational tools for scattering amplitudes at LO and NLO QCD
Proceedings of “Loops and Legs in Quantum Field Theory ” 11th DESY Workshop on Elementary Particle Physics — PoS(LL2012), 2013 A. van Hameren
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Efficiency improvements for the numerical computation of NLO corrections [PDF]
Journal of High Energy Physics, 2012 In this paper we discuss techniques, which lead to a significant improvement of the efficiency of the Monte Carlo integration, when one-loop QCD amplitudes are calculated numerically with the help of the subtraction method and contour deformation. The techniques discussed are: holomorphic and non-holomorphic division into sub-channels, optimisation of ...
Becker, Sebastian +2 more
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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 +3 more
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Precise yield of high-energy photons from Higgsino dark matter annihilation
Journal of High Energy Physics, 2020 The impact of electroweak Sudakov logarithms on the endpoint of the photon spectrum for wino dark matter annihilation was studied intensively over the last several years. In this work, we extend these results to Higgsino dark matter χ 1 0 $$ {\chi}_1^0 $$
M. Beneke +3 more
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Virtual corrections to gg → ZH via a transverse momentum expansion
Journal of High Energy Physics, 2021 We compute the next-to-leading virtual QCD corrections to the partonic cross section of the production of a Higgs boson in association with a Z boson in gluon fusion.
Lina Alasfar +4 more
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Electroweak corrections to diphoton plus jets
Journal of High Energy Physics, 2017 We calculate the next-to-leading order electroweak corrections to the production of a photon pair in association with zero, one and two jets at the LHC. We use GoSam and Sherpa to obtain the results in a fully automated way. For a typical set of fiducial
Mauro Chiesa +3 more
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t tbar W and t tbar Z Hadroproduction at NLO accuracy in QCD with Parton Shower and Hadronization effects [PDF]
, 2012 We present theoretical predictions for the hadroproduction of t tbar W+, t tbar W- and t tbar Z at LHC as obtained by matching numerical computations at NLO accuracy in QCD with Shower Monte Carlo programs. The calculation is performed by PowHel, relying
Garzelli, M. V. +3 more
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Meromorphic solutions of recurrence relations and DRA method for multicomponent master integrals
Journal of High Energy Physics, 2018 We formulate a method to find the meromorphic solutions of higher-order recurrence relations in the form of the sum over poles with coefficients defined recursively. Several explicit examples of the application of this technique are given.
Roman N. Lee, Kirill T. Mingulov
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