Extraction of the strong coupling with HERA and EIC inclusive data

Salim Cerci*, Zuhal Seyma Demiroglu, Abhay Deshpande, Paul R. Newman, Barak Schmookler, Deniz Sunar Cerci, Katarzyna Wichmann

*Corresponding author for this work

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Abstract

Sensitivity to the strong coupling αS(MZ2) is investigated using existing Deep Inelastic Scattering data from HERA in combination with projected future measurements from the Electron Ion Collider (EIC) in a next-to-next-to-leading order QCD analysis. A potentially world-leading level of precision is achievable when combining simulated inclusive neutral current EIC data with inclusive charged and neutral current measurements from HERA, with or without the addition of HERA inclusive jet and dijet data. The result can be obtained with substantially less than one year of projected EIC data at the lower end of the EIC centre-of-mass energy range. Some questions remain over the magnitude of uncertainties due to missing higher orders in the theoretical framework.
Original languageEnglish
Article number1011
Number of pages9
JournalEuropean Physical Journal C
Volume83
Issue number11
DOIs
Publication statusPublished - 7 Nov 2023

Bibliographical note

Acknowledgments:
We are grateful to many colleagues in the EIC experimental community who have worked on all aspects of the project over many years and are now developing detector concepts towards the acquisition of real data similar to those simulated here. We thank numerous theoretical physics colleagues for very valuable discussions about the theory uncertainties: Néstor Armesto, Andrea Barontini, Thomas Cridge, Stefano Forte, Lucian Harland-Lang, Anna M. Staśto and Robert S. Thorne, as well as Valerio Bertone and Francesco Giuli for their help with the APFEL program and Christopher Schwan for his help with the PineAPPL tool. This work of Z.S.D and A.D. was supported in part by the U.S. Department of Energy and the Simons Foundation.

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