The semileptonic decays of Ωb*, Σb* and Ξb′* baryons
Abstract
In this article, we employ the QCD sum rules basing on three-point correlation function to systematically analyze the transition form factors for the semileptonic decays of the spin 3/2+ bottom baryons (Ωb*, Σb*, and Ξb′ *) to their corresponding spin 1/2+ charmed partners. On the phenomenological side, we eliminate the contaminations of the baryons with negative parity and those with lower spin states. The operator product expansion is carried out up to dimension-six condensates, including the perturbative part, quark condensate ⟨ q̅ q⟩, gluon condensate ⟨ gs2GG⟩, mixed condensate ⟨ q̅ gsσGq⟩, and four-quark condensates ⟨ q̅ q⟩2 and gs2⟨ q̅ q⟩2. The form factors are evaluated in the space-like region and then are fitted into the time-like physical region via a z-series expansion approach. Finally, the semileptonic decay widths for Ωb*, Σb* and Ξb′* baryons are calculated with our predicted form factors, and various polarization observables are also predicted. The predicted results in this work are compared with those predicted by other collaborations, and are expected to be useful for studying the properties of these singly heavy baryons.
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BibTeX
@misc{yang2026semileptonic,
title = {{The semileptonic decays of $Ω_b^*$, $Σ_b^*$ and $Ξ_b^\prime*$ baryons}},
author = {Peng Yang and Guo-Liang Yu and Zhi-Gang Wang and Jie Lu and Bin Wu},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.27472},
eprint = {2609.27472},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.27472},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - The semileptonic decays of Ω_b^*, Σ_b^* and Ξ_b^′* baryons
AU - Peng Yang
AU - Guo-Liang Yu
AU - Zhi-Gang Wang
AU - Jie Lu
AU - Bin Wu
PY - 2026
DA - 2026/09/23
PB - arXiv
DO - 10.48550/arxiv.2609.27472
UR - https://arxiv.org/abs/2609.27472
AB - In this article, we employ the QCD sum rules basing on three-point correlation function to systematically analyze the transition form factors for the semileptonic decays of the spin 3/2^+ bottom baryons (Ω_b^*, Σ_b^*, and Ξ_b^′ *) to their corresponding spin 1/2^+ charmed partners. On the phenomenological side, we eliminate the contaminations of the baryons with negative parity and those with lower spin states. The operator product expansion is carried out up to dimension-six condensates, including the perturbative part, quark condensate ⟨ q̅ q⟩, gluon condensate ⟨ g_s^2GG⟩, mixed condensate ⟨ q̅ g_sσGq⟩, and four-quark condensates ⟨ q̅ q⟩^2 and g_s^2⟨ q̅ q⟩^2. The form factors are evaluated in the space-like region and then are fitted into the time-like physical region via a z-series expansion approach. Finally, the semileptonic decay widths for Ω_b^*, Σ_b^* and Ξ_b^′* baryons are calculated with our predicted form factors, and various polarization observables are also predicted. The predicted results in this work are compared with those predicted by other collaborations, and are expected to be useful for studying the properties of these singly heavy baryons.
ER -