Non-Classicality in tW system via negativity and geometric quantum discord
Abstract
We perform a phenomenological study of non-classical correlations in the mixed-dimensional qubit-qutrit system realized by leading order pp→ tW production at √s=13 TeV in the leptonic final state. The two missing neutrinos are reconstructed with conditional normalizing flows trained on simulated detector-level objects, and the joint spin density matrix ρtW∈ℋ2⊗ℋ3 is obtained in a generalized Bloch representation from the angular distributions of the leptonic decay products. Non-classical correlations are quantified using the Peres--Horodecki negativity and geometric quantum discord. We quantify the correlations at different region of mtW at the reconstruction level within the Standard Model and the impact of two reducible backgrounds viz. tt̅ and WWj processes, tagged using boosted decision trees. We further study the behavior of correlations in presence of anomalous chromomagnetic and chromoelectric dipole moments of the top quark. The sensitivity reach of the quantum observables along with polarization and spin correlation parameters are reported for current LHC and future HL-LHC scenario.
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BibTeX
@misc{subba2026nonclassicality,
title = {{Non-Classicality in $tW$ system via negativity and geometric quantum discord}},
author = {Amir Subba and Yu Shi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.27404},
eprint = {2610.27404},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.27404},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Non-Classicality in tW system via negativity and geometric quantum discord
AU - Amir Subba
AU - Yu Shi
PY - 2026
DA - 2026/10/19
PB - arXiv
DO - 10.48550/arxiv.2610.27404
UR - https://arxiv.org/abs/2610.27404
AB - We perform a phenomenological study of non-classical correlations in the mixed-dimensional qubit-qutrit system realized by leading order pp→ tW production at √s=13 TeV in the leptonic final state. The two missing neutrinos are reconstructed with conditional normalizing flows trained on simulated detector-level objects, and the joint spin density matrix ρ_tW∈ℋ_2⊗ℋ_3 is obtained in a generalized Bloch representation from the angular distributions of the leptonic decay products. Non-classical correlations are quantified using the Peres--Horodecki negativity and geometric quantum discord. We quantify the correlations at different region of m_tW at the reconstruction level within the Standard Model and the impact of two reducible backgrounds viz. tt̅ and WWj processes, tagged using boosted decision trees. We further study the behavior of correlations in presence of anomalous chromomagnetic and chromoelectric dipole moments of the top quark. The sensitivity reach of the quantum observables along with polarization and spin correlation parameters are reported for current LHC and future HL-LHC scenario.
ER -