Illuminating nucleon-gluon interference via calorimetric asymmetry

Journal Article · 13 November 2023 · Physical Review. D.

DOI: https://doi.org/10.1103/physrevd.108.l091502 · OSTI ID:2205559

Li, Xiao Lin ^[1]; Liu, Xiaohui  ^[2]; Yuan, Feng ^[3]; Zhu, Hua Xing ^[4]

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1. Beijing Normal University, Beijing (China)
2. Beijing Normal University, Beijing (China); Peking Univ., Beijing (China)
3. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
4. Peking Univ., Beijing (China)

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 φ. The interference of the spinning gluon with both positive and negative helicities translates into a cos(2φ) asymmetry imprinted on the detector. Unlike the conventional transverse momentum dependent probes, the cos(2φ) asymmetry in this approach is preserved by rotational symmetry, holds to all orders, and is free of radiation contamination and is thus expected to provide the exquisite signature of the nucleon linearly polarized gluons.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC); Natural Science Foundation of China (NSFC); USDOE
• Grant/Contract Number: AC02-05CH11231; 12175016; 11975200
• OSTI ID: 2205559
• Alternate ID(s): OSTI ID: 2439564
• Journal Information: Physical Review. D., Vol. 108, Issue 9; ISSN 2470-0010
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English