Eur. Phys. J. C 69, 19-29 (2010)
https://doi.org/10.1140/epjc/s10052-010-1391-6

A comparison of new MC-adapted parton densities

Department of Astronomy and Theoretical Physics, Lund University, Sölvegatan 14A, 223 62, Lund, Sweden

tomas@kasemets.se

Received: 22 March 2010
Revised: 23 June 2010
Published online: 3 August 2010

Abstract

A selection of the latest and most frequently used parton distribution functions (PDFs) is incorporated in PYTHIA8, including the Monte Carlo-adapted PDFs from the MSTW and CTEQ collaborations. This article examines the differences in PDFs as well as the effect they have on results of simulations and compare with data collected by the CDF experiment. Monte Carlo-adapted PDFs do a better job than leading- and next-to-leading order PDFs for many observables, but there is room for further improvements.