Semileptonic B̅*c → (P, V) ℓ- ν̅ℓ decays within the self-consistent light-front quark model
Abstract
Motivated by the recent observation of the Bc* meson by the ATLAS Collaboration and its promising discovery potential at future high-luminosity colliders, we investigate the semileptonic decays B̅*c → (P, V) ℓ- ν̅ℓ (P=D, Bd,s, ηc(1S, 2S, 3S); V=D*, B*d,s, ψ(1S, 2S, 3S)) in the Standard Model. Using the relevant form factors obtained in the self-consistent covariant light-front quark model, we present theoretical predictions for several physical observables, including the branching fraction, the ratios of branching fractions R(L), the longitudinal polarization fraction of the daughter vector meson, the τ lepton spin asymmetry and the forward-backward asymmetry. It is found that the branching fractions for the Cabibbo-favored B̅*c → B̅*s e- ν̅e and B̅*s μ- ν̅μ decays reach the order of cal O(10−6), which might be firstly observed at the future high-luminosity Large Hadron Collider.
Versions
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BibTeX
@misc{chang2026semileptonic,
title = {{Semileptonic $\barB^*_c \to (P, V) \ell^- \barν_\ell$ decays within the self-consistent light-front quark model}},
author = {Qin Chang and Jianying Qian and Liting Wang and Xiaolin Wang and Shuai Xu and Jie Zhu},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.26379},
eprint = {2609.26379},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.26379},
}
RIS
TY - UNPB
TI - Semileptonic B̅^*_c → (P, V) ℓ^- ν̅_ℓ decays within the self-consistent light-front quark model
AU - Qin Chang
AU - Jianying Qian
AU - Liting Wang
AU - Xiaolin Wang
AU - Shuai Xu
AU - Jie Zhu
PY - 2026
DA - 2026/09/22
PB - arXiv
DO - 10.48550/arxiv.2609.26379
UR - https://arxiv.org/abs/2609.26379
AB - Motivated by the recent observation of the B_c^* meson by the ATLAS Collaboration and its promising discovery potential at future high-luminosity colliders, we investigate the semileptonic decays B̅^*_c → (P, V) ℓ^- ν̅_ℓ (P=D, B_d,s, η_c(1S, 2S, 3S); V=D^*, B^*_d,s, ψ(1S, 2S, 3S)) in the Standard Model. Using the relevant form factors obtained in the self-consistent covariant light-front quark model, we present theoretical predictions for several physical observables, including the branching fraction, the ratios of branching fractions R_(L), the longitudinal polarization fraction of the daughter vector meson, the τ lepton spin asymmetry and the forward-backward asymmetry. It is found that the branching fractions for the Cabibbo-favored B̅^*_c → B̅^*_s e^- ν̅_e and B̅^*_s μ^- ν̅_μ decays reach the order of cal O(10^−6), which might be firstly observed at the future high-luminosity Large Hadron Collider.
ER -