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arXiv · 2512.20526

Relativistic corrections to double $B_c$ meson production in $e^+e^-$ annihilation

Xiao-Peng Wang·Yi-Jie Li·Guang-Zhi Xu·Kui-Yong Liu
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Abstract

Within the framework of nonrelativistic QCD (NRQCD) factorization, we investigate the relativistic corrections to the production of double $B_c$ mesons in $e^+e^-$ annihilation. The study covers center-of-mass energies from the production threshold up to $2m_Z$, considering both the photon and $Z^0$-boson propagated processes. We find that the relativistic corrections are significant, with the corresponding $K$ factors of approximately 0.6. The azimuthal asymmetry, angular distribution, and transverse momentum distribution are also presented.

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Xiao-Peng Wang, Yi-Jie Li, Guang-Zhi Xu, Kui-Yong Liu. 2025-12-23. Relativistic corrections to double $B_c$ meson production in $e^+e^-$ annihilation. https://arxiv.org/abs/2512.20526

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