On the use of the KMR unintegrated parton distribution functions

Krzysztof Golec-Biernat, Anna M. Staśto

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We discuss the unintegrated parton distribution functions (UPDFs) introduced by Kimber, Martin and Ryskin (KMR), which are frequently used in phenomenological analyses of hard processes with transverse momenta of partons taken into account. We demonstrate numerically that the commonly used differential definition of the UPDFs leads to erroneous results for large transverse momenta. We identify the reason for that, being the use of the ordinary PDFs instead of the cutoff dependent distribution functions. We show that in phenomenological applications, the integral definition of the UPDFs with the ordinary PDFs can be used.

Original languageEnglish (US)
Pages (from-to)633-638
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume781
DOIs
StatePublished - Jun 10 2018

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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