Hidden-heavy Pentaquarks in the Born-Oppenheimer Approximation for QCD
Abstract
Hidden-heavy pentaquarks can be identified as bound states in diabatic Born-Oppenheimer potentials that are repulsive color-Coulomb potentials at short distance, cross below a heavy-hadron-pair threshold, and then approach that threshold at long distance. We identify the pentaquarks Pcc̅(4312)+, Pcc̅(4337)+, Pcc̅(4440)+, and Pcc̅(4457)+ as the ground-state quartet for c c̅ in the two coupled potentials associated with a spin-3/2 adjoint baryon. We predict that their JP quantum numbers are 1/2-, 3/2-, 3/2-, and 5/2-, respectively. Our prediction for Pcc̅(4457)+ differs from almost all previous predictions. Our prediction that there are only four hidden-charm pentaquarks differs qualitatively from that of simple molecular models that there should be seven. We identify the strange hidden-charm pentaquarks Pcc̅s(4338)0 and Pcc̅s(4459)0 as two members of the ground-state triplet for c c̅ in the potential associated with a spin-1/2 strange adjoint baryon. We also present model-independent predictions for pentaquark decays into charmonium plus a light baryon and into a charm baryon and a charm meson.
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BibTeX
@misc{alasiri2026hiddenheavy,
title = {{Hidden-heavy Pentaquarks in the Born-Oppenheimer Approximation for QCD}},
author = {Fareed Alasiri and Eric Braaten and Roberto Bruschini},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.06009},
eprint = {2610.06009},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.06009},
}
RIS
TY - UNPB
TI - Hidden-heavy Pentaquarks in the Born-Oppenheimer Approximation for QCD
AU - Fareed Alasiri
AU - Eric Braaten
AU - Roberto Bruschini
PY - 2026
DA - 2026/10/05
PB - arXiv
DO - 10.48550/arxiv.2610.06009
UR - https://arxiv.org/abs/2610.06009
AB - Hidden-heavy pentaquarks can be identified as bound states in diabatic Born-Oppenheimer potentials that are repulsive color-Coulomb potentials at short distance, cross below a heavy-hadron-pair threshold, and then approach that threshold at long distance. We identify the pentaquarks P_cc̅(4312)^+, P_cc̅(4337)^+, P_cc̅(4440)^+, and P_cc̅(4457)^+ as the ground-state quartet for c c̅ in the two coupled potentials associated with a spin-3/2 adjoint baryon. We predict that their J^P quantum numbers are 1/2^-, 3/2^-, 3/2^-, and 5/2^-, respectively. Our prediction for P_cc̅(4457)^+ differs from almost all previous predictions. Our prediction that there are only four hidden-charm pentaquarks differs qualitatively from that of simple molecular models that there should be seven. We identify the strange hidden-charm pentaquarks P_cc̅s(4338)^0 and P_cc̅s(4459)^0 as two members of the ground-state triplet for c c̅ in the potential associated with a spin-1/2 strange adjoint baryon. We also present model-independent predictions for pentaquark decays into charmonium plus a light baryon and into a charm baryon and a charm meson.
ER -