3 papers
hep-ph2026
Rare Radiative Decays of Z boson into S- and P-wave Charmonium within the Bethe-Salpeter Model
Asif Ali, Yi-Jie Li, Guang-Zhi Xu +1
We employ the Bethe-Salpeter (BS) model to investigate radiative decays of the Z boson into charmonium. Within the instantaneous approximation of the BS equation, we analyze the re…
hep-ph2026
Associated Production of Charmonia-Bottomonia with Color-Octet Channels at the Z Factory, CEPC and FCC-ee
Xiao-Peng Wang, Yi-Jie Li, Guang-Zhi Xu +1
Within the nonrelativistic QCD (NRQCD) framework, we investigate the associated production of charmonia+bottomonia at future super factory and at the CEPC/FCC-ee. The color-oct…
hep-ph2025
Order- corrections to heavy quark fragmentation to S-wave heavy quarkonium
Sai Cui, Yi-Jie Li, Guang-Zhi Xu +1
Within the framework of nonrelativistic quantum chromodynamics (NRQCD) factorization, we compute the relativistic corrections to the fragmentation of a heavy q…