Soleymaninia, Maryam and Goharipour, Muhammad and Khanpour, Hamzeh and Spiesberger, Hubert (2021) Simultaneous extraction of fragmentation functions of light charged hadrons with mass corrections. Physical Review D, 103 (054045). ISSN 2470-0029

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Abstract

Achieving the highest possible precision for theoretical predictions at the present and future high-energy lepton and hadron colliders requires a precise determination of fragmentation functions (FFs) of light and heavy charged hadrons from a global QCD analysis with great accuracy. We describe a simultaneous determination of unpolarized FFs of charged pions, charged kaons and protons/antiprotons from single-inclusive hadron production in electron-positron annihilation (SIA) data at next-to-leading order and next-to-next-to-leading order accuracy in perturbative QCD. A new set of FFs, called SGKS20, is presented. We include data for identified light charged hadrons (π±, K± and p/p¯) as well as for unidentified light charged hadrons, h± and show that these data have a significant impact on both size and uncertainties of the fragmentation functions. We examine the inclusion of higher-order perturbative QCD corrections and finite-mass effects. We compare the new SGKS20 FFs with other recent FFs available in the literature and find in general reasonable agreement, but also important differences for some parton species. We show that theoretical predictions obtained from our new FFs are in very good agreement with the analyzed SIA data, especially at small values of z. The SGKS20 FF sets presented in this work are available via the LHAPDF interface.

Item Type:	Article
Additional Information:	Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Cite as: Simultaneous extraction of fragmentation functions of light charged hadrons with mass corrections, Soleymaninia, Maryam and Goharipour, Muhammad and Khanpour, Hamzeh and Spiesberger, Hubert, Phys. Rev. D, v.103 054045 (2021), doi. 10.1103/PhysRevD.103.054045, url https://link.aps.org/doi/10.1103/PhysRevD.103.054045
Keywords:	Quantum chromodynamics; Simultaneous extraction; fragmentation functions; light charged hadrons; mass corrections;
Academic Unit:	Faculty of Science and Engineering > Theoretical Physics
Item ID:	14751
Identification Number:	https://doi.org/10.1103/PhysRevD.103.054045
Depositing User:	Hamzeh Khanpour
Date Deposited:	06 Sep 2021 15:18
Journal or Publication Title:	Physical Review D
Publisher:	American Physical Society
Refereed:	Yes
Funders:	e School of Particles and Accelerators, Institute for Research in Fundamental Sciences (IPM)
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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