Determination of the strong coupling constant and the Collins-Soper kernel from the energy-energy correlator in $e^+e^-$ collisions

Autor:	Kang, Zhong-Bo, Penttala, Jani, Zhang, Congyue
Rok vydání:	2024
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory
Druh dokumentu:	Working Paper
Popis:	We perform, for the first time, a simultaneous global fit of the strong coupling constant $\alpha_s$ and the Collins-Soper (CS) kernel in the back-to-back limit of energy-energy correlators in $e^+ e^-$ collisions at next-to-next-to-next-to-leading logarithmic (N$^3$LL) accuracy. Our extracted value of $\alpha_s$ is consistent with the world average and has comparable accuracy. For the nonperturbative part of the CS kernel, we consider two different parameterizations, and the results align with those obtained from phenomenological fits of the transverse-momentum-dependent differential cross section in semi-inclusive deep inelastic scattering and Drell-Yan production. Comment: 7 pages, 2 figures, 2 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2410.21435 Zobrazit plný text záznamu View this record from Arxiv