Inspired by the promising prospect of the Bc(2S) meson at the coming HL-LHC experiments, the nonleptonic Bc(2S) meson weak decays induced by both the b and c decays are investigated with the QCD factorization approach. It is found that branching ratios for the color- and CKM-favored Bc(2S)→Bsρ, Bsπ decays can reach up to O(10−9), which might be measurable. The Bc(2S) decays into the final states containing one charmonium are highly suppressed by the CKM factors, and have significantly small branching ratios, O(10−12) and less, which might be outside the future measurement capability. This paper provides a ready reference for the future experimental study on the hadronic Bc(2S) weak decays.
@article{arxiv.2510.05503,
title = {Study of the two-body nonleptonic $B_{c}(2S)$ weak decays with the QCD factorization approach},
author = {Na Wang and Yueling Yang and Junfeng Sun},
journal= {arXiv preprint arXiv:2510.05503},
year = {2025}
}