Contribution to a conference proceedings

PUBDB-2025-03747

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Recent progress in transverse momentum dependent (TMD) Parton Densities and corresponding parton showers

Taheri Monfared, S. (Corresponding author)DESY*

2025

Abstract: The parton branching method is crucial for Monte Carlo generators, which are essential for high-energy physics predictions. We examine the impact of soft gluons on inclusive collinear and Transverse Momentum Dependent (TMD) parton densities. By applying the Parton-Branching (PB) method, we identify the non-perturbative Sudakov form factor with the integration range $z \to 1$, which is often neglected in collinear parton shower approaches. The significance of soft gluons is demonstrated through the transverse momentum spectrum of Drell-Yan lepton pairs, resulting in an intrinsic-$k_t$ distribution width that remains independent of $\sqrt(s)$, contrary to observations in collinear parton shower approaches. This behavior is attributed to the non-perturbative Sudakov form factor.

Note: 5 pages, 2 Figures. Based on a presentation given at the 31st International Workshop on Deep Inelastic Scattering (DIS2024), 8-12 April 2024, Grenoble, France

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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)

Experiment(s):

1. No specific instrument

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Taheri Monfared, S. (Corresponding author)DESY*
Recent progress in transverse momentum dependent (TMD) Parton Densities and corresponding parton showers
[10.3204/PUBDB-2024-05116]     Files  Fulltext Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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