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Angular distributions of Drell-Yan leptons in the TMD factorization approach

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arxiv 2407.06277 v1 pith:4HV5CMKU submitted 2024-07-08 hep-ph

Sara Piloneta , Alexey Vladimirov This is my paper
classification hep-ph
keywords angulardistributionsfactorizationkpcsboer-muldersdrell-yanfunctionsleptons
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present a comprehensive study of the angular structure functions for Drell-Yan leptons in $Z/\gamma$-boson production within the framework of the transverse momentum dependent (TMD) factorization theorem, including kinematic power corrections (KPCs). We find good agreement with the data in the applicability region of the TMD factorization theorem. The inclusion of KPCs allows us to describe all angular coefficients in a frame-independent manner using only the leading-twist TMD distributions: the unpolarized and the Boer-Mulders functions. The value of the Boer-Mulders function is determined using the ATLAS measurement of the $A_2$ angular coefficient. The analysis is performed at N$^4$LL perturbative order. Additionally, we discuss the technical implementation and impact of KPCs on the phenomenology of TMD distributions.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Soft background fields at next-to-leading power in transverse momentum dependent SIDIS with jets

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    New next-to-leading-power factorization for SIDIS with jets from a background-field method with explicit soft modes, including operator-level definitions of twist-3 TMDs free of rapidity and endpoint divergences.

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    hep-ph 2025-09 conditional novelty 6.0 of 10

    First flavor-dependent extraction of unpolarized quark TMDs in the pion, finding a wider transverse momentum tail for valence d quarks than for sea quarks, with large uncertainties.

  3. Dilepton angular distributions in the color-dipole $S$-matrix framework

    hep-ph 2025-07 conditional novelty 5.0 of 10

    First derivation of Z and W helicity density matrix elements in the color-dipole S-matrix framework, with forward-rapidity predictions at 14 TeV linking the Lam-Tung violation to the UGD tail.

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