Heavy quarks in polarised deep-inelastic scattering at the electron-ion collider

Felix Hekhorn; Giacomo Magni; Emanuele R. Nocera; Tanjona R. Rabemananjara; Juan Rojo; Adrianne Schaus; Roy Stegeman

doi:10.1140/epjc/s10052-024-12524-z

Heavy quarks in polarised deep-inelastic scattering at the electron-ion collider

Felix Hekhorn, Giacomo Magni, Emanuele R. Nocera^*, Tanjona R. Rabemananjara, Juan Rojo, Adrianne Schaus, Roy Stegeman

^*Corresponding author for this work

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

We extend the FONLL general-mass variable-flavour-number scheme to the case of longitudinally polarised DIS structure functions, accounting for perturbative corrections up to Oα_s². We quantify the impact of charm quark mass and higher-order perturbative corrections on projected measurements of inclusive and charm-tagged longitudinal asymmetries at the Electron-Ion Collider (EIC) and at the Electron-ion collider in China (EicC). We demonstrate how the inclusion of these corrections is essential to compute predictions with an accuracy that matches the projected precision of the measurements. The computation is made publicly available through the open-source EKO and YADISM programs.

Original language	English
Article number	189
Pages (from-to)	1-21
Number of pages	21
Journal	European Physical Journal C
Volume	84
Early online date	26 Feb 2024
DOIs	https://doi.org/10.1140/epjc/s10052-024-12524-z
Publication status	Published - 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

Funding

We thank Daniel de Florian, Rodolfo Sassot, Marco Stratmann, and Werner Vogelsang for sending us the Monte Carlo variant of DSSV14. We thank Yuxiang Zhao for sharing the projections for EIC and EicC pseudo-data. We thank Barak Schmookler for useful discussions and for sharing with us the polarised structure function projections used in the ATHENA proposal. We also thank Valerio Bertone for discussions regarding the benchmark of the polarised coefficient functions. F.H. is supported by the Academy of Finland project 358090 and is funded as a part of the Center of Excellence in Quark Matter of the Academy of Finland, project 346326. E.R. N. is supported by the Italian Ministry of University and Research (MUR) through the “Rita Levi-Montalcini” Program. J. R. and G. M. are partially supported by NWO (Dutch Research Council). J. R. and T. R. are supported by an ASDI (Accelerating Scientific Discoveries) grant from the Netherlands eScience Center. R. S. is supported by the U.K. Science and Technology Facility Council (STFC) grant ST/T000600/1.

Funders	Funder number
ASDI
U.K. Science and Technology Facility Council
Science and Technology Facilities Council	ST/T000600/1
Academy of Finland	358090, 346326
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministero dell’Istruzione, dell’Università e della Ricerca

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title = "Heavy quarks in polarised deep-inelastic scattering at the electron-ion collider",

abstract = "We extend the FONLL general-mass variable-flavour-number scheme to the case of longitudinally polarised DIS structure functions, accounting for perturbative corrections up to Oαs2. We quantify the impact of charm quark mass and higher-order perturbative corrections on projected measurements of inclusive and charm-tagged longitudinal asymmetries at the Electron-Ion Collider (EIC) and at the Electron-ion collider in China (EicC). We demonstrate how the inclusion of these corrections is essential to compute predictions with an accuracy that matches the projected precision of the measurements. The computation is made publicly available through the open-source EKO and YADISM programs.",

author = "Felix Hekhorn and Giacomo Magni and Nocera, {Emanuele R.} and Rabemananjara, {Tanjona R.} and Juan Rojo and Adrianne Schaus and Roy Stegeman",

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AU - Hekhorn, Felix

AU - Magni, Giacomo

AU - Nocera, Emanuele R.

AU - Rabemananjara, Tanjona R.

AU - Rojo, Juan

AU - Schaus, Adrianne

AU - Stegeman, Roy

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AB - We extend the FONLL general-mass variable-flavour-number scheme to the case of longitudinally polarised DIS structure functions, accounting for perturbative corrections up to Oαs2. We quantify the impact of charm quark mass and higher-order perturbative corrections on projected measurements of inclusive and charm-tagged longitudinal asymmetries at the Electron-Ion Collider (EIC) and at the Electron-ion collider in China (EicC). We demonstrate how the inclusion of these corrections is essential to compute predictions with an accuracy that matches the projected precision of the measurements. The computation is made publicly available through the open-source EKO and YADISM programs.

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Heavy quarks in polarised deep-inelastic scattering at the electron-ion collider

Abstract

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