Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Giuseppe De Laurentis"'
Autor:
Giuseppe De Laurentis, Ben Page
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-66 (2022)
Abstract Rational coefficients of special functions in scattering amplitudes are known to simplify on singular surfaces, often diverging less strongly than the naïve expectation. To systematically study these surfaces and rational functions on them,
Externí odkaz:
https://doaj.org/article/6bde2dfbb29245ccadb4ab433039f528
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-44 (2022)
Abstract We present compact analytic results for the one-loop amplitude for the process 0 → q q ¯ ℓ ℓ ¯ ℓ ′ ℓ ¯ ′ g $$ q\overline{q}\ell \overline{\ell}{\ell}^{\prime }{\overline{\ell}}^{\prime }g $$ , relevant for both the productio
Externí odkaz:
https://doaj.org/article/fc673c27fe614946abd055ca37e2fff5
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-61 (2021)
Abstract We present details of the calculation of the pp → W(→ lν)γ process at next-to-next-to-leading order in QCD, calculated using the jettiness slicing method. The calculation is based entirely on analytic amplitudes. Because of the radiati
Externí odkaz:
https://doaj.org/article/7d2704b869d14fb1a445240dc475729d
Autor:
Giuseppe De Laurentis, Daniel Maître
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-21 (2021)
Abstract We present all two-loop five-parton leading-colour finite remainders in the spinor-helicity formalism by analysing numerical evaluations of their known expressions in terms of Mandelstam invariants. Recasting them in terms of spinor-helicity
Externí odkaz:
https://doaj.org/article/3ef2d910ff8e4ff2b39514a88cb61705
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-48 (2020)
Abstract We present compact analytic formulae for the one-loop amplitudes for Higgs + 4 parton scattering, 0 → ggggh, 0 → q ¯ $$ \overline{q} $$ qggh and 0 → q ¯ $$ \overline{q} $$ q q ¯ ′ $$ {\overline{q}}^{\prime } $$ q′h, mediated by
Externí odkaz:
https://doaj.org/article/fb29b96575844b9a96752bd1d2c170bd
Autor:
Giuseppe De Laurentis
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 2, Pp 1-28 (2020)
Abstract The CHY formalism for massless scattering provides a cohesive framework for the computation of scattering amplitudes in a variety of theories. It is especially compelling because it elucidates existing relations among theories which are seem
Externí odkaz:
https://doaj.org/article/327b2adfb62c44869ee5781b418aa04d
Autor:
Giuseppe De Laurentis, Daniel Maître
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-17 (2019)
Abstract In this article we present a method to generate analytic expressions for the integral coefficients of loop amplitudes using numerical evaluations only. We use highprecision arithmetics to explore the singularity structure of the coefficients
Externí odkaz:
https://doaj.org/article/43ce3402c13a4540ac9b96be88ac5bc5
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-61 (2021)
Journal of High Energy Physics
Journal of High Energy Physics, 2021, Vol.2021(7) [Peer Reviewed Journal]
Journal of High Energy Physics
Journal of High Energy Physics, 2021, Vol.2021(7) [Peer Reviewed Journal]
We present details of the calculation of the pp → W(→ lν)γ process at next-to-next-to-leading order in QCD, calculated using the jettiness slicing method. The calculation is based entirely on analytic amplitudes. Because of the radiation zero,
Publikováno v:
Journal of high energy physics, 2022, Vol.2022(7), pp.96 [Peer Reviewed Journal]
We present compact analytic results for the one-loop amplitude for the process 0 → $$ q\overline{q}\ell \overline{\ell}{\ell}^{\prime }{\overline{\ell}}^{\prime }g $$ q q ¯ ℓ ℓ ¯ ℓ ′ ℓ ¯ ′ g , relevant for both the production of a pa
Autor:
Giuseppe De Laurentis
Publikováno v:
Journal of Physics: Conference Series. 2438:012135
Scattering amplitudes in perturbative quantum field theory exhibit a rich structure of zeros, poles and branch cuts which are best understood in complexified momentum space. It has been recently shown that by leveraging this information one can signi