Flow between extremal one-point energy correlators in QCD
Abstract
The energy density generated by a vector current is characterized by a single parameter aE bounded by unitarity to -1/2 ≤ aE ≤ 1, with extremal values saturated by free theories of different matter content. Through confinement, QCD transmutes fermionic matter into scalars, revealing a nontrivial flow between extremal correlators. We reconstruct this flow using perturbative QCD and chiral perturbation theory. The observable is accessible with currently available experimental data.
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