EPPS21 : a global QCD analysis of nuclear PDFs

Eskola, Kari J.; Paakkinen, Petja; Paukkunen, Hannu; Salgado, Carlos A.

doi:10.1140/epjc/s10052-022-10359-0

dc.contributor.author	Eskola, Kari J.
dc.contributor.author	Paakkinen, Petja
dc.contributor.author	Paukkunen, Hannu
dc.contributor.author	Salgado, Carlos A.
dc.date.accessioned	2022-05-11T09:39:28Z
dc.date.available	2022-05-11T09:39:28Z
dc.date.issued	2022
dc.identifier.citation	Eskola, K. J., Paakkinen, P., Paukkunen, H., & Salgado, C. A. (2022). EPPS21 : a global QCD analysis of nuclear PDFs. <i>European Physical Journal C</i>, <i>82</i>(5), Article 413. <a href="https://doi.org/10.1140/epjc/s10052-022-10359-0" target="_blank">https://doi.org/10.1140/epjc/s10052-022-10359-0</a>
dc.identifier.other	CONVID_144249140
dc.identifier.uri	https://jyx.jyu.fi/handle/123456789/81001
dc.description.abstract	We present an updated global analysis of collinearly factorized nuclear parton distribution functions (PDFs) at next-to-leading order in perturbative QCD. In comparison to our previous fit, EPPS16, the present analysis includes more data from proton-lead collisions at the Large Hadron Collider: 5 TeV double-differential CMS dijet and LHCb D-meson data, as well as 8 TeV CMS W± data. These new data lead to significantly better-constrained gluon distributions at small and intermediate values of the momentum fraction x, confirming the presence of shadowing and antishadowing for gluons in large nuclei. In addition, we include Jefferson Lab measurements of deeply inelastic scattering which probe nuclear PDFs at large x and low virtualities. For the first time within the Hessian framework, we now also explore the uncertainties of nuclear PDFs due to the errors in the baseline proton PDFs. We release the results of our analysis as a new public parametrization of nuclear PDFs called EPPS21.	en
dc.format.mimetype	application/pdf
dc.language.iso	eng
dc.publisher	Springer
dc.relation.ispartofseries	European Physical Journal C
dc.rights	CC BY 4.0
dc.title	EPPS21 : a global QCD analysis of nuclear PDFs
dc.type	research article
dc.identifier.urn	URN:NBN:fi:jyu-202205112650
dc.contributor.laitos	Fysiikan laitos	fi
dc.contributor.laitos	Department of Physics	en
dc.type.uri	http://purl.org/eprint/type/JournalArticle
dc.type.coar	http://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatus	peerReviewed
dc.relation.issn	1434-6044
dc.relation.numberinseries	5
dc.relation.volume	82
dc.type.version	publishedVersion
dc.rights.copyright	© 2022 the Authors
dc.rights.accesslevel	openAccess	fi
dc.type.publication	article
dc.relation.grantnumber	330448
dc.relation.grantnumber	346325
dc.relation.grantnumber	297058
dc.relation.grantnumber	308301
dc.subject.yso	ydinfysiikka
dc.subject.yso	hiukkasfysiikka
dc.format.content	fulltext
jyx.subject.uri	http://www.yso.fi/onto/yso/p14759
jyx.subject.uri	http://www.yso.fi/onto/yso/p15576
dc.rights.url	https://creativecommons.org/licenses/by/4.0/
dc.relation.doi	10.1140/epjc/s10052-022-10359-0
dc.relation.funder	Research Council of Finland	en
dc.relation.funder	Research Council of Finland	en
dc.relation.funder	Research Council of Finland	en
dc.relation.funder	Research Council of Finland	en
dc.relation.funder	Suomen Akatemia	fi
dc.relation.funder	Suomen Akatemia	fi
dc.relation.funder	Suomen Akatemia	fi
dc.relation.funder	Suomen Akatemia	fi
jyx.fundingprogram	Academy Project, AoF	en
jyx.fundingprogram	Centre of Excellence, AoF	en
jyx.fundingprogram	Academy Project, AoF	en
jyx.fundingprogram	Academy Research Fellow, AoF	en
jyx.fundingprogram	Akatemiahanke, SA	fi
jyx.fundingprogram	Huippuyksikkörahoitus, SA	fi
jyx.fundingprogram	Akatemiahanke, SA	fi
jyx.fundingprogram	Akatemiatutkija, SA	fi
jyx.fundinginformation	We acknowledge financial support from the Academy of Finland Projects 297058 and 330448 (K.J.E.), and 308301 (H.P.), Xunta de Galicia (Centro singular de investigacián de Galicia accreditation 2019-2022), European Union ERDF, the María de Maeztu Units of Excellence program MDM-2016-0692 and the Spanish Research State Agency, European Research Council project ERC-2018-ADG-835105 YoctoLHC. The Finnish IT Center for Science (CSC) is acknowledged for the computing time through the Project jyy2580. This research was funded as a part of the Center of Excellence in Quark Matter of the Academy of Finland (project 346325)
dc.type.okm	A1

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