Preprint

PUBDB-2025-00904

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Collinear and TMD distributions with dynamical soft-gluon resolution scale

Hautmann, F. (Corresponding author)Extern* ; Keersmaekers, L.DESY* ; Lelek, A.Extern* ; Barzani, S. S. ; Taheri Monfared, S.DESY*

2025

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Please use a persistent id in citations: doi:10.3204/PUBDB-2025-00904

Report No.: DESY-25-031; arXiv:2502.19380

Abstract: Soft-gluon resolution scales characterize parton branching Monte Carlo implementations of the evolution equations for parton distribution functions in Quantum Chromodynamics (QCD). We examine scenarios with dynamical, i.e., branching-scale dependent, resolution scale, and discuss physical implications for both collinear and transverse-momentum dependent (TMD) distributions. We perform the first determination of parton distributions with dynamical resolution scale, at next-to-leading order (NLO) in perturbation theory, from fits to precision deep-inelastic scattering measurements from HERA. We present an application of TMD distributions with dynamical resolution scale to Drell-Yan lepton-pair transverse momentum spectra at the LHC, and comment on the extraction of non-perturbative intrinsic-kT parameters from Drell-Yan data at small transverse momenta.

Note: 33 pages, 15 figures

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Contributing Institute(s):

1. LHC/CMS Experiment (CMS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project G:(GEPRIS)467467041 - Ein neuer Ansatz für Präzisionsberechnungen von harten Streuprozessen am LHC und zukünftigen Beschleunigern unter Verwendung von Parton Branching Transversalimpuls Verteilungen (PB-app) (467467041) (467467041)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Hautmann, F. (Corresponding author)Extern* ; Keersmaekers, L.DESY* ; Lelek, A.Extern* ; Barzani, S. S. ; Taheri Monfared, S.DESY*
Collinear and TMD distributions with dynamical soft-gluon resolution scale
Journal of high energy physics 06(6), 192 (2025) [10.1007/JHEP06(2025)192]2025     Files  Fulltext Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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