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Illuminating Nucleon Gluon Interference via Calorimetric Asymmetry

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arxiv 2308.10942 v1 pith:KRXLOGRG submitted 2023-08-21 hep-ph hep-ex

classification hep-phhep-ex
keywords asymmetrynucleonapproachgluongluonsinterferencelinearlypolarized
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present an innovative approach to the linearly polarized gluons confined inside the unpolarized nucleon in lepton-nucleon scattering. Our method analyzes the correlation of energy flows at azimuthal separations $\phi$. The interference of the spinning gluon with both positive and negative helicities translates into a $\cos(2\phi)$ asymmetry imprinted on the detector. Unlike the conventional transverse momentum dependent (TMD) probes, the $\cos(2\phi)$ asymmetry in this approach is preserved by rotational symmetry, holds to all orders, and is free of radiation contamination, thus expected to provide the exquisite signature of the nucleon linearly polarized gluons.

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Cited by 2 Pith papers

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  1. Energy-Energy Correlator at Hadron Colliders: Celestial Blocks and Singularities

    hep-ph 2025-05 conditional novelty 7.0 of 10

    First analytic leading-order calculation of the full-angle energy-energy correlator in hadron collisions, with celestial block decomposition and Regge-limit factorization.

  2. Parton spin correlations and $\mathcal{CP}$ properties in Higgs boson decay at future lepton colliders

    hep-ph 2026-01 conditional novelty 5.0 of 10

    In H→gg at a 240 GeV e+e− collider, the four-point energy-energy correlator with energy weight n=4 gives the strongest sensitivity to gluon spin correlations and, assuming perfect splitting-mode identification in the ...

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