One-loop corrections to the processes e+e- → γ, Z → J/ψηc and e+e- → Z→ J/ψ J/ψ

被引：5

作者：

Berezhnoy, A., V ^{[1
]}

Belov, I. N. ^{[1
,2
]}

Poslavsky, S., V ^{[3
]}

Likhoded, A. K. ^{[3
]}

机构：

[1] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys SINP MSU, 1 2 Leninskie Gory, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia

[3] NRC Kurchatov Inst IHEP, 1 Nauki Sq, Protvino 142281, Moscow Region, Russia

来源：

PHYSICAL REVIEW D | 2021年 / 104卷 / 03期

关键词：

DOUBLE CHARMONIUM PRODUCTION;

D O I：

10.1103/PhysRevD.104.034029

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The cross sections of J/psi eta(c) and J/psi J/psi production in e(+)e(-) annihilation are calculated at a one-loop accuracy near Z-boson pole and at higher energies as well. Both intermediate bosons, gamma and Z, are included. It is found that at Z mass, the next-to-leading contribution increases the production cross sections by a factor of 3.5.

引用

页数：9