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The small kt-region in Drell-Yan production at next-to-leading order with the Parton Branching Method

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arxiv 2312.08655 v3 pith:MC7I5I66 submitted 2023-12-14 hep-ph

I. Bubanja , A. Bermudez Martinez , L. Favart , F. Guzman , F. Hautmann , H. Jung , A. Lelek , M. Mendizabal
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K. Moral Figueroa L. Moureaux N. Raicevic M. Seidel S. Taheri Monfared
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classification hep-ph
keywords transversepartondistributionsintrinsicmomentumsmallbranchingdetailed
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The Parton Branching (PB) method describes the evolution of transverse momentum dependent (TMD) parton distributions, covering all kinematic regions from small to large transverse momenta kT. The small kT-region is very sensitive both to the contribution of the intrinsic motion of partons (intrinsic kT) and to the resummation of soft gluons taken into account by the PB TMD evolution equations. We study the role of soft-gluon emissions in TMD as well as integrated parton distributions. We perform a detailed investigation of the PB TMD methodology at next-to-leading order (NLO) in Drell-Yan (DY) production for low transverse momenta. We present the extraction of the nonperturbative "intrinsic-kT" distribution from recent measurements of DY transverse momentum distributions at the LHC across a wide range in DY masses, including a detailed treatment of statistical, correlated and uncorrelated uncertainties. We comment on the (in)dependence of intrinsic transverse momentum on DY mass and center-of-mass energy, and on the comparison with other approaches.

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Cited by 2 Pith papers

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

  1. Dihadron Angular Correlations in the $e^+e^-$ Collision

    hep-ph 2025-06 conditional novelty 7.0 of 10

    The paper derives the first complete O(alpha_s^2) analytic QCD corrections to the dihadron angular separation distribution in e+e- annihilation, with verified cancellation of infrared poles.

  2. Non-perturbative effects and soft-gluon dynamics in low-$p_T$ Drell-Yan production

    hep-ph 2026-02 conditional novelty 5.0 of 10

    With a remnant-only recoil scheme, the PDF2ISR shower reproduces PB-TMD Drell-Yan predictions and data from sqrt(s)=38.8 GeV to 13 TeV using one energy-independent intrinsic-kT width (q_s=1.04 GeV); low-pT spectra exp...

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