Электронный каталог

Статья

Kotikov, A.V.
Fractional Analytic QCD Beyond Leading Order in the Timelike Region / A.V.Kotikov, I.A.Zemlyakov // Physical Review D [Electronic resource]. – 2023. – Vol.107, No.9. – P.094034. – URL: https://doi.org/10.1103/PhysRevD.107.094034. – Bibliogr.:70.

In this paper we show that, as in the spacelike case, the inverse logarithmic expansion is applicable for all values of the argument of the analytic coupling constant. We present two different approaches, one of which is based primarily on trigonometric functions, and the latter is based on dispersion integrals. The results obtained up to the 5th order of perturbation theory have a compact form and their acquiring is much easier than the methods that have been used before. As an example, we apply our results to study the Higgs boson decay into a b¯b pair.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 324.1д - Квантовая хромодинамика$
Бюллетени = 44/023