Femtoscopic correlation functions between the lightest charmed hadrons
Abstract
Femtoscopic momentum correlations probe low-energy interactions of short-lived charmed hadrons that are inaccessible to conventional scattering experiments. We calculate the correlation functions of D+D+, D0D0, D+D0, and Λc+Λc+ in Pb--Pb collisions at √(sNN)=5.02~TeV, using species-dependent non-Gaussian PHSD sources constructed from hadronization points and strong interactions calibrated to lattice-QCD scattering lengths: OBE and EFT-contact models for DD, and an EFT-contact model for ΛcΛc. Coulomb and quantum-statistical effects are included consistently. Although the calibrated interactions are weakly repulsive, the channels separate the relevant effects: D+D0, free of Coulomb distortion and identical-particle interference, gives the cleanest access to the DD strong interaction, whereas Λc+Λc+ is most pronounced in peripheral collisions, where the compact source enhances the low-momentum signal. The ΛcΛc input is taken from lattice QCD at a nonphysical pion mass, so its physical-point shift is not quantified here. Within these stated inputs, the results provide ALICE-ready benchmark correlations and background references; the quoted bands propagate only the lattice scattering-length uncertainty.
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BibTeX
@misc{yuan2026femtoscopic,
title = {{Femtoscopic correlation functions between the lightest charmed hadrons}},
author = {Qi-Wei Yuan and Ming-Zhu Liu},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.28021},
eprint = {2610.28021},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.28021},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Femtoscopic correlation functions between the lightest charmed hadrons
AU - Qi-Wei Yuan
AU - Ming-Zhu Liu
PY - 2026
DA - 2026/10/20
PB - arXiv
DO - 10.48550/arxiv.2610.28021
UR - https://arxiv.org/abs/2610.28021
AB - Femtoscopic momentum correlations probe low-energy interactions of short-lived charmed hadrons that are inaccessible to conventional scattering experiments. We calculate the correlation functions of D^+D^+, D^0D^0, D^+D^0, and Λ_c^+Λ_c^+ in Pb--Pb collisions at √(s_NN)=5.02~TeV, using species-dependent non-Gaussian PHSD sources constructed from hadronization points and strong interactions calibrated to lattice-QCD scattering lengths: OBE and EFT-contact models for DD, and an EFT-contact model for Λ_cΛ_c. Coulomb and quantum-statistical effects are included consistently. Although the calibrated interactions are weakly repulsive, the channels separate the relevant effects: D^+D^0, free of Coulomb distortion and identical-particle interference, gives the cleanest access to the DD strong interaction, whereas Λ_c^+Λ_c^+ is most pronounced in peripheral collisions, where the compact source enhances the low-momentum signal. The Λ_cΛ_c input is taken from lattice QCD at a nonphysical pion mass, so its physical-point shift is not quantified here. Within these stated inputs, the results provide ALICE-ready benchmark correlations and background references; the quoted bands propagate only the lattice scattering-length uncertainty.
ER -