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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.21069 |
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Table of Contents:
- We study quantum coherence in top-antitop production at the LHC by comparing Standard Model predictions with CMS data across different kinematic regimes. Theory and experiment are statistically consistent in the near-threshold and boosted central regions, confirming that the spin-density framework captures the dominant helicity-interference structure. The intermediate-mass window shows a noticeable deviation, indicating enhanced sensitivity to radiative QCD effects. This work reinterprets measured spin-correlation data within a quantum-coherence framework, thereby introducing coherence as a complementary and experimentally grounded probe of the Standard Model spin structure and a potentially sensitive diagnostic of new-physics effects in the top-quark sector.