Magnetic dipole moments as probes of doubly-bottom molecular pentaquarks
Abstract
We investigate the magnetic dipole moments of doubly-bottom pentaquark states with spin-parities JP=1/2- and 3/2-, interpreted as hadronic molecules in the BΣb, BΣb*, and B*Σb configurations. The analysis is performed within the framework of QCD light-cone sum rules employing photon distribution amplitudes. Our results demonstrate a strong sensitivity of the magnetic dipole moments to the internal spin structure and quark composition of the states. In particular, the light-quark sector provides the dominant contribution in the BΣb configuration, while the magnetic moment of BΣb* is largely governed by the heavy bottom quark. For the B*Σb molecular state, both light and heavy sectors contribute constructively, leading to a significantly enhanced magnetic dipole moment. These findings indicate that magnetic dipole moments constitute a sensitive probe of the internal structure of molecular-type doubly-bottom pentaquarks and provide testable predictions for future experimental studies.
Versions
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BibTeX
@misc{ozdem2026magnetic,
title = {{Magnetic dipole moments as probes of doubly-bottom molecular pentaquarks}},
author = {Ulaş Özdem},
howpublished = {arXiv},
year = {2026},
month = jul,
doi = {10.48550/arxiv.2607.27653},
eprint = {2607.27653},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.27653},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Magnetic dipole moments as probes of doubly-bottom molecular pentaquarks
AU - Ulaş Özdem
PY - 2026
DA - 2026/07/30
PB - arXiv
DO - 10.48550/arxiv.2607.27653
UR - https://arxiv.org/abs/2607.27653
AB - We investigate the magnetic dipole moments of doubly-bottom pentaquark states with spin-parities J^P=1/2^- and 3/2^-, interpreted as hadronic molecules in the BΣ_b, BΣ_b^*, and B^*Σ_b configurations. The analysis is performed within the framework of QCD light-cone sum rules employing photon distribution amplitudes. Our results demonstrate a strong sensitivity of the magnetic dipole moments to the internal spin structure and quark composition of the states. In particular, the light-quark sector provides the dominant contribution in the BΣ_b configuration, while the magnetic moment of BΣ_b^* is largely governed by the heavy bottom quark. For the B^*Σ_b molecular state, both light and heavy sectors contribute constructively, leading to a significantly enhanced magnetic dipole moment. These findings indicate that magnetic dipole moments constitute a sensitive probe of the internal structure of molecular-type doubly-bottom pentaquarks and provide testable predictions for future experimental studies.
ER -