Pure annihilation decay Bc+ → ST with improved perturbative QCD formalism
Abstract
We study the pure annihilation decay Bc+ → ST for the first time in the standard model with S and T representing the states of the light scalar (13 P0) and tensor (13 P2) correspondingly. Utilizing the assignment qq̅ for light scalars with two-scenarios classification, we calculate the branching ratios of Bc+ → ST with the improved perturbative QCD (iPQCD) formalism at leading order in the strong coupling αs. The large branching ratios around 10−6 within uncertainties in the Cabibbo-Kobayashi-Maskawa-favored channels, such as Bc+ → a0(1450) a2(1320), Bc+ → a0(980, 1450)+ f2(1270), Bc+ → K0*(700, 1430) K2*(1430), and Bc+ → f0(500, 1370, 1500) a2(1320)+, are obtained in the iPQCD formalism, which would be tested at the Large Hadron Collider-beauty detector in the (near) future. The relevant tests to these theoretical predictions of large branching ratios associated with typical relative ratios could provide important opportunities for understanding the QCD dynamics of the involved modes or light scalars, as well as for exploring the reliability of the iPQCD formalism. Moreover, the direct charge-parity violating asymmetries in the decay Bc+ → ST are naturally zero, since only tree-diagram contributions are involved.
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BibTeX
@misc{wang2026pure,
title = {{Pure annihilation decay $B_c^+ \to ST$ with improved perturbative QCD formalism}},
author = {Sheng-Yu Wang and Xin Liu and Zhen-Jun Xiao},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.41078},
eprint = {2610.41078},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.41078},
note = {CC BY-SA 4.0},
}
RIS
TY - UNPB
TI - Pure annihilation decay B_c^+ → ST with improved perturbative QCD formalism
AU - Sheng-Yu Wang
AU - Xin Liu
AU - Zhen-Jun Xiao
PY - 2026
DA - 2026/10/29
PB - arXiv
DO - 10.48550/arxiv.2610.41078
UR - https://arxiv.org/abs/2610.41078
AB - We study the pure annihilation decay B_c^+ → ST for the first time in the standard model with S and T representing the states of the light scalar (1^3 P_0) and tensor (1^3 P_2) correspondingly. Utilizing the assignment qq̅ for light scalars with two-scenarios classification, we calculate the branching ratios of B_c^+ → ST with the improved perturbative QCD (iPQCD) formalism at leading order in the strong coupling α_s. The large branching ratios around 10^−6 within uncertainties in the Cabibbo-Kobayashi-Maskawa-favored channels, such as B_c^+ → a_0(1450) a_2(1320), B_c^+ → a_0(980, 1450)^+ f_2(1270), B_c^+ → K_0^*(700, 1430) K_2^*(1430), and B_c^+ → f_0(500, 1370, 1500) a_2(1320)^+, are obtained in the iPQCD formalism, which would be tested at the Large Hadron Collider-beauty detector in the (near) future. The relevant tests to these theoretical predictions of large branching ratios associated with typical relative ratios could provide important opportunities for understanding the QCD dynamics of the involved modes or light scalars, as well as for exploring the reliability of the iPQCD formalism. Moreover, the direct charge-parity violating asymmetries in the decay B_c^+ → ST are naturally zero, since only tree-diagram contributions are involved.
ER -