Zobrazeno 1 - 10
of 61
pro vyhledávání: '"B. Ruijl"'
Publikováno v:
Physics Letters B, Vol 849, Iss , Pp 138468- (2024)
We have extended our previous computations of the even-N moments of the flavour-singlet four-loop splitting functions to N=12 for the pure-singlet quark case and N=10 for all other cases. These results, obtained using physical quantities in inclusive
Externí odkaz:
https://doaj.org/article/60cf9fd1732b460bafe6486d3f088dbb
Publikováno v:
Physics Letters B, Vol 825, Iss , Pp 136853- (2022)
We have computed the four lowest even-N moments of all four splitting functions for the evolution of flavour-singlet parton densities of hadrons at the fourth order in the strong coupling constant αs. The perturbative expansion of these moments, and
Externí odkaz:
https://doaj.org/article/f1783e46f3e94516bb9023794ac718ca
Publikováno v:
Physics Letters B, Vol 790, Iss , Pp 436-443 (2019)
We present the first calculations of next-to-next-to-next-to-next-to-leading order (N4LO) contributions to anomalous dimensions of spin-N twist-2 operators in perturbative QCD. Specifically, we have obtained the respective non-singlet quark–quark a
Externí odkaz:
https://doaj.org/article/b07fec63539f40e7b7f3e32dfda6bc78
Publikováno v:
Physics Letters B, Vol 782, Iss , Pp 627-632 (2018)
We have computed the contributions of the quartic Casimir invariants to the four-loop anomalous dimensions of twist-2 spin-N operators at N≤16. The results provide new information on the structure of the next-to-next-to-next-to-leading order (N3LO)
Externí odkaz:
https://doaj.org/article/34fbb83c8f7e441283d04ed576f81a83
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-80 (2017)
Abstract We present the next-to-next-to-next-to-leading order (N3LO) contributions to the non-singlet splitting functions for both parton distribution and fragmentation functions in perturbative QCD. The exact expressions are derived for the terms co
Externí odkaz:
https://doaj.org/article/c641406397604e6e9a2f628e7d5f821b
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 8, Pp 1-26 (2017)
Abstract We present the first determination of Higgs-boson decay to hadrons at the next-to-next-to-next-to-next-to-leading order of perturbative QCD in the limit of a heavy top quark and massless light flavours. This result has been obtained by compu
Externí odkaz:
https://doaj.org/article/1fc8a71d8d244477b1e7799479fe540f
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 6, Pp 1-50 (2017)
Abstract We have computed the self-energies and a set of three-particle vertex functions for massless QCD at the four-loop level in the M S ¯ $$ \overline{\mathrm{MS}} $$ renormalization scheme. The vertex functions are evaluated at points where one
Externí odkaz:
https://doaj.org/article/82757bab840847d9896d02a2ab4f9f7b
Publikováno v:
Nuclear Physics B, Vol 915, Iss C, Pp 335-362 (2017)
We have computed the fourth-order nf2 contributions to all three non-singlet quark–quark splitting functions and their four nf3 flavour-singlet counterparts for the evolution of the parton distributions of hadrons in perturbative QCD with nf effect
Externí odkaz:
https://doaj.org/article/e6293223418145169a047102e74b0b1e
Publikováno v:
Physics Letters B, Vol 746, Iss , Pp 347-350 (2015)
An important aspect of improving perturbative predictions in high energy physics is efficiently reducing dimensionally regularised Feynman integrals through integration by parts (IBP) relations. The well-known triangle rule has been used to achieve s
Externí odkaz:
https://doaj.org/article/715718d97362445cac7e41f9283f5dd3
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