ALP photo-production in the parton and hadron cascade model PACIAE
Abstract
In this work, the parton and hadron cascade model PACIAE is employed to simulate the events of Au+Au collisions at √(sNN)=200 GeV within the 60-80 \% centrality interval. Based on the abundant photons in final hadronic state, the statistical-mechanics-based coalescence model DCPC is applied to phenomenologically recombine post-freeze-out photon pairs into axion-like particles (ALPs) for the first time. The coalescence probability is constrained by the branching-ratio Br(a → γγ)=0.57 under the threshold of twice of K meson mass. The ALP observables including yields, transverse-momentum distributions and rapidity spectra are calculated for several benchmark ALP-mass bins. These theoretical predictions are worthy to be investigated by the experiments.
Related
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BibTeX
@misc{zhou2026photoproduction,
title = {{ALP photo-production in the parton and hadron cascade model PACIAE}},
author = {Dai-Mei Zhou and Zhi-Lei She and Jian Cao and An-Ke Lei and Wen-Chao Zhang and Hua Zheng and Li-Lin Zhu and Yu-Liang Yan and Ben-Hao Sa},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.27448},
eprint = {2609.27448},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.27448},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - ALP photo-production in the parton and hadron cascade model PACIAE
AU - Dai-Mei Zhou
AU - Zhi-Lei She
AU - Jian Cao
AU - An-Ke Lei
AU - Wen-Chao Zhang
AU - Hua Zheng
AU - Li-Lin Zhu
AU - Yu-Liang Yan
AU - Ben-Hao Sa
PY - 2026
DA - 2026/09/23
PB - arXiv
DO - 10.48550/arxiv.2609.27448
UR - https://arxiv.org/abs/2609.27448
AB - In this work, the parton and hadron cascade model PACIAE is employed to simulate the events of Au+Au collisions at √(s_NN)=200 GeV within the 60-80 \% centrality interval. Based on the abundant photons in final hadronic state, the statistical-mechanics-based coalescence model DCPC is applied to phenomenologically recombine post-freeze-out photon pairs into axion-like particles (ALPs) for the first time. The coalescence probability is constrained by the branching-ratio B_r(a → γγ)=0.57 under the threshold of twice of K meson mass. The ALP observables including yields, transverse-momentum distributions and rapidity spectra are calculated for several benchmark ALP-mass bins. These theoretical predictions are worthy to be investigated by the experiments.
ER -