The form factors of transition process ℬQ1Q2(1/2+)→ℬQ1*(3/2+) and their applications to semileptonic decays
Abstract
In the framework of QCD sum rules, we obtain the form factors of the weak transition process ℬQ1Q2(1/2+)→ℬQ1*(3/2+). In this analysis, we eliminate the interferences of the low spin states and negative parity states to final results by employing 16 different dirac structures. As an application, these form factors are finally used to analyze the semileptonic decays of ℬQ1Q2(1/2+)→ℬQ1*(3/2+)lν, where these decays are driven by the transition processes c→ d/s+l++νl and b→ u+l−+ν̅l. The predicted physical quantities include not only the partial widths, ratios of ΓL/ΓT and the branching fractions, but also some observables such as the forward-backward asymmetry parameter AFBl of lepton, the PzF component of the polarization vector for daughter baryon and the longitudinal polarization of the lepton Pzl. We hope all of these theoretical predictions about the weak decays will be helpful for studying the properties of doubly heavy baryons in experiments in the future.
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BibTeX
@misc{yu2026form,
title = {{The form factors of transition process $\mathcalB_Q_1Q_2(\frac12^+)\rightarrow\mathcalB_Q_1^*(\frac32^+)$ and their applications to semileptonic decays}},
author = {Guo-Liang Yu and Peng Yang and Zhi-Gang Wang and Jie Lu and Bin Wu and Ze Zhou},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2607.16697},
eprint = {2607.16697},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.16697},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - The form factors of transition process ℬ_Q_1Q_2(1/2^+)→ℬ_Q_1^*(3/2^+) and their applications to semileptonic decays
AU - Guo-Liang Yu
AU - Peng Yang
AU - Zhi-Gang Wang
AU - Jie Lu
AU - Bin Wu
AU - Ze Zhou
PY - 2026
DA - 2026/10/14
PB - arXiv
DO - 10.48550/arxiv.2607.16697
UR - https://arxiv.org/abs/2607.16697
AB - In the framework of QCD sum rules, we obtain the form factors of the weak transition process ℬ_Q_1Q_2(1/2^+)→ℬ_Q_1^*(3/2^+). In this analysis, we eliminate the interferences of the low spin states and negative parity states to final results by employing 16 different dirac structures. As an application, these form factors are finally used to analyze the semileptonic decays of ℬ_Q_1Q_2(1/2^+)→ℬ_Q_1^*(3/2^+)lν, where these decays are driven by the transition processes c→ d/s+l^++ν_l and b→ u+l^−+ν̅_l. The predicted physical quantities include not only the partial widths, ratios of Γ_L/Γ_T and the branching fractions, but also some observables such as the forward-backward asymmetry parameter A_FB^l of lepton, the P_z^F component of the polarization vector for daughter baryon and the longitudinal polarization of the lepton P_z^l. We hope all of these theoretical predictions about the weak decays will be helpful for studying the properties of doubly heavy baryons in experiments in the future.
ER -