Light cone distributions of P-wave quarkonia
Abstract
Motivated by renewed interest in the light-cone distributions of P-wave quarkonia, we investigate the leading-twist distribution amplitudes of these states within the basis light-front quantization (BLFQ) formalism. While our extracted distributions exhibit macroscopic shapes consistent with expectations from the non-relativistic limit, we find that relativistic effects introduce critical structural features. Most notably, we observe novel ``W"-shaped structures in the distribution amplitudes of the axial vector mesons, which arise from relativistically induced S/D partial waves and cannot be explained by non-relativistic dynamics. These findings provide essential non-perturbative inputs for analyzing hard exclusive processes and highlight the importance of relativistic frameworks for understanding heavy quarkonium production and structure at modern high-energy colliders.
Related
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- Gravitational form factors of heavy quarkonia and their nonrelativistic expansion in a self-consistent light-front quark model
- Measurement-adaptive light-cone transform for robust non-line-of-sight imaging
- Twist-4 GTMDs of sea quarks at zero skewness in the light-cone quark model
- One-loop renormalization of the quark TMD in projectile light-cone gauge
BibTeX
@misc{li2026light,
title = {{Light cone distributions of $P$-wave quarkonia}},
author = {Yang Li and Tianyang Hu and Xianghui Cao and Meijian Li},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.08393},
eprint = {2609.08393},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.08393},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Light cone distributions of P-wave quarkonia
AU - Yang Li
AU - Tianyang Hu
AU - Xianghui Cao
AU - Meijian Li
PY - 2026
DA - 2026/09/08
PB - arXiv
DO - 10.48550/arxiv.2609.08393
UR - https://arxiv.org/abs/2609.08393
AB - Motivated by renewed interest in the light-cone distributions of P-wave quarkonia, we investigate the leading-twist distribution amplitudes of these states within the basis light-front quantization (BLFQ) formalism. While our extracted distributions exhibit macroscopic shapes consistent with expectations from the non-relativistic limit, we find that relativistic effects introduce critical structural features. Most notably, we observe novel ``W"-shaped structures in the distribution amplitudes of the axial vector mesons, which arise from relativistically induced S/D partial waves and cannot be explained by non-relativistic dynamics. These findings provide essential non-perturbative inputs for analyzing hard exclusive processes and highlight the importance of relativistic frameworks for understanding heavy quarkonium production and structure at modern high-energy colliders.
ER -