PDF4LHC recommendations for LHC Run II

作者：J. M. Butterworth, Stefano Carrazza, A. M. Cooper-Sarkar, A. De Roeck, Joël Feltesse, Stefano Forte, Jun Gao, Sasha Glazov, J. Huston, Zahari Kassabov, R. McNulty, A. Morsch, Pavel Nadolsky, V. Radescu, Juan Rojo, R. S. Thorne · 发表于：Journal of Physics G Nuclear and Particle Physics · 年份：2016 · DOI：10.1088/0954-3899/43/2/023001 · 被引用次数：1639 · 研究领域：Particle physics theoretical and experimental studies、High-Energy Particle Collisions Research、Quantum Chromodynamics and Particle Interactions

Abstract We provide an updated recommendation for the usage of sets of parton distribution functions (PDFs) and the assessment of PDF and PDF+ uncertainties suitable for applications at the LHC Run II. We review developments since the previous PDF4LHC recommendation, and discuss and compare the new generation of PDFs, which include substantial information from experimental data from the Run I of the LHC. We then propose a new prescription for the combination of a suitable subset of the available PDF sets, which is presented in terms of a single combined PDF set. We finally discuss tools which allow for the delivery of this combined set in terms of optimized sets of Hessian eigenvectors or Monte Carlo replicas, and their usage, and provide some examples of their application to LHC phenomenology. This paper is dedicated to the memory of Guido Altarelli (1941–2015), whose seminal work made possible the quantitative study of PDFs.