Accessing TMDs through the Cahn Effect

ORAL

Abstract

We investigate the proton's intrinsic transverse-momentum distributions via the Cahn effect within the framework of transverse-momentum–dependent (TMD) factorization. The Cahn effect generates a characteristic azimuthal cosϕ modulation between the leptonic and hadronic planes in semi-inclusive deep inelastic scattering (SIDIS). In this talk, we analyze in detail the TMD parton distribution functions that contribute to this modulation and their nontrivial relations, which are constrained by the so-called equation-of-motion (EOM) relations. Our findings advance the ongoing program of TMD phenomenology and are directly relevant to SIDIS measurements at Jefferson Lab and the COMPASS experiment at CERN.

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Publication: "Transverse-momentum-dependent factorization at next-to-leading power and the Cahn Effect" - To be submitted for publication.
Related to the work - https://doi.org/10.48550/arXiv.2211.13209

Presenters

  • Owen Page

    Pennsylvania State University

Authors

  • Owen Page

    Pennsylvania State University

  • Leonard Gamberg

    Pennsylvania State University

  • Zhongbo Kang

    University of California, Los Angeles