Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Robin Marzucca"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 1, Pp 1-35 (2023)
Abstract We consider the case of a two-loop five-point pentagon-box integral configuration with one internal massive propagator that contributes to top-quark pair production in association with a jet at hadron colliders. We construct the system of di
Externí odkaz:
https://doaj.org/article/564b64c4c5664bfca75c0ae61d70f952
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 6, Pp 1-35 (2022)
Abstract We compute helicity amplitudes for the one-loop QCD corrections to top-quark pair production analytically in terms of a set of uniformly transcendental master integrals. We provide corrections up to O(ε 2) in the dimensional regulator for t
Externí odkaz:
https://doaj.org/article/ce9e7209481341e2a053b56455a03fda
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-15 (2022)
Abstract We compute the three-loop leading-colour corrections to the Yang-Mills Regge trajectory and gluon impact factor. Conjecturing that, in analogy with N $$ \mathcal{N} $$ = 4 super Yang-Mills (SYM), in a suitable scheme N c -subleading terms ar
Externí odkaz:
https://doaj.org/article/7980166f43064aedac652fa81d1a7869
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 6, Pp 1-38 (2021)
Abstract We present a complete set of analytic helicity amplitudes for top quark pair production via gluon fusion at two-loops in QCD. For the first time, we include corrections due to massive fermion loops which give rise to integrals over elliptic
Externí odkaz:
https://doaj.org/article/327cde1e30414b2f93deb09c7f170585
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 2, Pp 1-38 (2020)
Abstract We compute fully analytic results for the three-loop diagrams involving two different massive quark flavours contributing to the ρ parameter in the Standard Model. We find that the results involve exactly the same class of functions that ap
Externí odkaz:
https://doaj.org/article/5cdb8ec74e5e4c70b11ce39afbfbc1c6
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-33 (2019)
Abstract We present fully analytic results for all master integrals for the three-loop banana graph with four equal and non-zero masses. The results are remarkably simple and all integrals are expressed as linear combinations of iterated integrals of
Externí odkaz:
https://doaj.org/article/1acd99c4dfde48dda40d496c134d51c3
Autor:
Robin Marzucca, Bram Verbeek
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-25 (2019)
Abstract We present the computation of the eight-particle three-loop amplitude beyond leading logarithmic accuracy in the multi-Regge limit of planar N $$ \mathcal{N} $$ = 4 Super Yang-Mills theory. Starting from the all-loop dispersion integral form
Externí odkaz:
https://doaj.org/article/621f3c1043f349f8b695a4099ccae679
Autor:
Vittorio Del Duca, Stefan Druc, James Drummond, Claude Duhr, Falko Dulat, Robin Marzucca, Georgios Papathanasiou, Bram Verbeek
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 6, Pp 1-57 (2018)
Abstract We present an all-loop dispersion integral, well-defined to arbitrary logarithmic accuracy, describing the multi-Regge limit of the 2 → 5 amplitude in planar N=4 $$ \mathcal{N}=4 $$ super Yang-Mills theory. It follows from factorization, d
Externí odkaz:
https://doaj.org/article/8bb17fc94be34abaa480b0f5a919ae73
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-44 (2017)
Abstract We study some analytic properties of the BFKL ladder at next-to-leading logarithmic accuracy (NLLA). We use a procedure by Chirilli and Kovchegov to construct the NLO eigenfunctions, and we show that the BFKL ladder can be evaluated order by
Externí odkaz:
https://doaj.org/article/edf13406a3ae42db8deb8f2a79bbe6e0
Publikováno v:
Journal of High Energy Physics
We consider the case of a two-loop five-point pentagon-box integral configuration with one internal massive propagator that contributes to top-quark pair production in association with a jet at hadron colliders. We construct the system of differentia