Combination of PDF uncertainties for LHC observables

29 Apr 2015, 12:00
25m
FORUM ()

FORUM

WG1 Structure Functions and Parton Densities WG1 Structure Functions and Parton Densities

Speaker

Prof. Pavel Nadolsky (Southern Methodist University)

Description

I review two methods for combination of PDF+QCD coupling uncertainties for LHC observables, based on meta-parametrizations of PDFs and compressed Monte Carlo replicas. The methods estimate combined PDF uncertainties using input PDF ensembles from several groups. They offer alternatives to the current PDF4LHC prescription for the combination of PDF uncertainties, and combine the PDFs at the level of their functional forms, rather than at the level of final physical predictions. Strengths of both methods are compared, and prospects for their implementation in future analyses are discussed.

Primary author

Prof. Pavel Nadolsky (Southern Methodist University)

Presentation Materials