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224 papers · 1 filter
Determination of proton PDF uncertainties with Markov chain Monte Carlo
Peter Risse, Nasim Derakhshanian, Tomas Jezo +2
We present an analysis of parton distribution functions (PDFs) of the proton using Markov Chain Monte Carlo (MCMC) methods. The MCMC approach naturally implements Bayes' theorem an…
General mass variable flavor number scheme for boson production in association with a heavy quark at hadron colliders
Marco Guzzi, Pavel Nadolsky, Laura Reina +2
We present a methodology to streamline implementation of massive-quark radiative contributions in calculations with a variable number of active partons in proton-proton collisions.…
Five-flavour scheme predictions for at next-to-leading order accuracy
Rikkert Frederix, Tetiana Moskalets
We compute top quark pair production in association with a bottom quark pair at the LHC within the five-flavour scheme, matched to a parton shower, employing the FxFx merging schem…
An analysis of parton distributions in a pion with Bézier parametrizations
Lucas Kotz, Aurore Courtoy, Pavel Nadolsky +2
We explore the role of parametrizations for nonperturbative QCD functions in global analyses, with a specific application to extending a phenomenological analysis of the parton dis…
Exploring SMEFT Couplings Using the Forward-Backward Asymmetry in Neutral Current Drell-Yan Production at the LHC
Andrii Anataichuk, Sven-Olaf Moch, Hamed Abdolmaleki +12
Neutral current Drell-Yan (DY) lepton-pair production is considered in the framework of the Standard Model Effective Field Theory (SMEFT). Using the open-source fit platform xFitte…
Towards a New nCTEQ global nPDF release
P. Risse, N. Derakhshanian, P. Duwentäster +11
We discuss the foundation for a new global nCTEQ nuclear PDF analysis, combining a number of our previous analyses into one consistent framework with updates to the underlying theo…