A1 Journal article (refereed)
Shadowing in Inelastic Nucleon-Nucleon Cross Section? (2020)

Eskola, K. J., Helenius, I., Kuha, M., & Paukkunen, H. (2020). Shadowing in Inelastic Nucleon-Nucleon Cross Section?. Physical Review Letters, 125(21), Article 212301. https://doi.org/10.1103/PhysRevLett.125.212301

JYU authors or editors

Publication details

All authors or editors: Eskola, Kari J.; Helenius, Ilkka; Kuha, Mikko; Paukkunen, Hannu

Journal or series: Physical Review Letters

ISSN: 0031-9007

eISSN: 1079-7114

Publication year: 2020

Volume: 125

Issue number: 21

Article number: 212301

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevLett.125.212301

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/73093

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2003.11856

Abstract

Experimental results of inclusive hard-process cross sections in heavy-ion collisions conventionally lean on a normalization computed from Glauber models where the inelastic nucleon-nucleon cross section σinelnn —a crucial input parameter—is simply taken from proton-proton measurements. In this Letter, using the computed electroweak boson production cross sections in lead-lead collisions as a benchmark, we determine σinelnn from the recent ATLAS data. We find a significantly suppressed σinelnn relative to what is usually assumed, show the consequences for the centrality dependence of the cross sections, and address the phenomenon in an eikonal minijet model with nuclear shadowing.

Keywords: particle physics; nuclear physics

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Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 3