English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a first practical implementation of a recently proposed hadronstructure oriented (HSO) approach to TMD phenomenology applied to Drell-Yanlike processes, including lepton pair production at moderate $Q^2$ and $Z^0$boson production. We compare and contrast general features of our methodologywith other common practices and emphasize the improvements derived from ourapproach that we view as essential for applications where extracting details ofnonperturbative transverse hadron structure is a major goal. These include theHSO's preservation of a basic TMD parton-model-like framework even whileaccounting for full TMD factorization and evolution, explicit preservation ofthe integral relationship between TMD and collinear pdfs, and the ability tomeaningfully compare different theoretical models of nonperturbative TMD partondistributions. In our examples, we show that there is significant sensitivityat moderate $Q^2$ to both the form of the nonperturbative transverse momentumdependence and the parametrization of collinear parton densities. However, wealso find that evolving to $Q^2 = M_Z^2$, without fitting, results in asatisfactory postdiction of existing data for $Z^0$ production, nearlyindependently of the modeling of nonperturbative transverse momentum behavior.We argue that this demonstrates that moderate $Q$ measurements should be givengreater weight than high $Q$ measurements in extractions of nonperturbativetransverse momentum dependence. We also obtain new extractions of thenonperturbative Collins-Soper kernel within the HSO approach. We discuss itsfeatures and compare with some earlier extractions.

Phenomenology of TMD parton distributions in Drell-Yan and $Z^0$ boson production in a hadron structure oriented approach