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

doi:10.1140/epjc/s10052-023-12176-5

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2023) 83: 1011
https://doi.org/10.1140/epjc/s10052-023-12176-5

Regular Article - Experimental Physics

Extraction of the strong coupling with HERA and EIC inclusive data

Salim Cerci¹^a, Zuhal Seyma Demiroglu²^,3, Abhay Deshpande²^,3^,4, Paul R. Newman⁵, Barak Schmookler⁶, Deniz Sunar Cerci¹ and Katarzyna Wichmann⁷

¹ Department of Physics, Faculty of Arts and Sciences, Adiyaman University, Adiyaman, Turkey
² Center for Frontiers in Nuclear Science, Stony Brook University, 11764, Stony Brook, NY, USA
³ Stony Brook University, 11794-3800, Stony Brook, NY, USA
⁴ Brookhaven National Laboratory, 11973-5000, Upton, NY, USA
⁵ School of Physics and Astronomy, University of Birmingham, Birmingham, UK
⁶ Department of Physics and Astronomy, University of California, 92521, Riverside, CA, USA
⁷ Deutsches Elektronen-Synchrotron DESY, 22607, Notkestr. 85, Hamburg, Germany

^a Salim.Cerci@cern.ch

Received: 16 July 2023
Accepted: 21 October 2023
Published online: 7 November 2023

Abstract

Sensitivity to the strong coupling $α_{S} (M_{Z}^{2})$ $\alpha _S(M^2_Z)$ 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.

© The Author(s) 2023

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