In this paper, we preformed a further research on the exclusive productions of double
charmonium via $ Z $-boson decay by using nonrelativistic QCD factorizations approach …

Rare decays of the Higgs boson into quarkonia pairs are studied within the framework of
nonrelativistic QCD approach. The main decay mechanisms and their interference are …

The heavy constituent quark pair of the heavy quarkonium is produced perturbatively and
subsequently undergoes hadronization into the bound state non-perturbatively. The …

A bstract In this paper, we present a detailed next-to-leading-order (NLO) study of J/ψ
angular distributions in e+ e−→ J/ψ+ η c, χ cJ (J= 0, 1, 2) within the nonrelativistic QCD …

Within the color singlet model, we calculate the exclusive production of double charmonia,
double bottomonia, and double B c mesons at future super Z factory. The two heavy …

Within the NRQCD framework, we calculate the exclusive production of double heavy
quarkonium (double charmonium and double bottomonium) at future super $ Z $ factory and …

The production cross sections of charmonia, charmonium–bottomonium and bottomonia
pairs in a single boson annihilation have been studied in a wide range of energies, which …

The production of double P-wave heavy quarkonia is studied systematically within the
framework of non-relativistic quantum chromodynamics at the exclusive process of the …

В настоящей работе приведены предварительные результаты по изучению сечения
рождения пар чармониев и боттомониев в процессе однобозонной e+ e-аннигиляции …