Uncertainties on the determination of the strong coupling αs from the energy evolution of jet fragmentation functions at low z
Abstract
The QCD coupling αs is determined at NLO*+NMLLA accuracy from the comparison of experimental jet data to
theoretical predictions of the energy-evolution of the parton-to-hadron fragmentation function moments (multiplicity,
peak, width, skewness) at low fractional hadron momentum z. From the existing e+e− and e±p jet data, we obtain
αs(m2
Z ) = 0.1195±0.0021(exp)+0.0015
−0.0 (scale) at the Z mass. The uncertainties of the extracted αs value are discussed.
Main Authors
Format
Conferences
Conference paper
Published
2016
Series
Subjects
Publication in research information system
Publisher
Elsevier BV
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201704031869Use this for linking
Review status
Peer reviewed
ISSN
2405-6014
DOI
https://doi.org/10.1016/j.nuclphysbps.2015.09.314
Conference
International Conference on High Energy Physics
Language
English
Published in
Nuclear and Particle Physics Proceedings
Is part of publication
ICHEP 2014 : 37th International Conference on High Energy Physics (ICHEP) Valencia, Spain, 2-9 July 2014
Citation
- d'Enterria, D., & Perez-Ramos, R. (2016). Uncertainties on the determination of the strong coupling αs from the energy evolution of jet fragmentation functions at low z. In M. Aguilar-Benítez, J. Fuster, S. Martí-García, & A. Santamaría (Eds.), ICHEP 2014 : 37th International Conference on High Energy Physics (ICHEP) Valencia, Spain, 2-9 July 2014 (pp. 1943-1948). Elsevier BV. Nuclear and Particle Physics Proceedings, Vol. 273-275. https://doi.org/10.1016/j.nuclphysbps.2015.09.314
License
Copyright© 2015 Elsevier B.V. This is an open access article under the CC BY license.