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Charm and beauty quark masses in the MMHT2014 global PDF analysis

Harland-Lang, L.A.; Martin, A.D.; Motylinski, P.; Thorne, R.S.

Charm and beauty quark masses in the MMHT2014 global PDF analysis Thumbnail


Authors

L.A. Harland-Lang

A.D. Martin

P. Motylinski

R.S. Thorne



Abstract

We investigate the variation in the MMHT2014 PDFs when we allow the heavy-quark masses mcmc and mbmb to vary away from their default values. We make PDF sets available in steps of Δmc=0.05 GeVΔmc=0.05 GeV and Δmb=0.25 GeVΔmb=0.25 GeV , and present the variation in the PDFs and in the predictions. We examine the comparison to the HERA data on charm and beauty structure functions and note that in each case the heavy-quark data, and the inclusive data, have a slight preference for lower masses than our default values. We provide PDF sets with three and four active quark flavours, as well as the standard value of five flavours. We use the pole mass definition of the quark masses, as in the default MMHT2014 analysis, but briefly comment on the MS¯¯¯¯¯¯¯MS¯ definition.

Citation

Harland-Lang, L., Martin, A., Motylinski, P., & Thorne, R. (2016). Charm and beauty quark masses in the MMHT2014 global PDF analysis. The European Physical Journal C, 76(1), Article 10. https://doi.org/10.1140/epjc/s10052-015-3843-5

Journal Article Type Article
Acceptance Date Dec 11, 2015
Online Publication Date Jan 6, 2016
Publication Date Jan 6, 2016
Deposit Date May 25, 2017
Publicly Available Date Mar 28, 2024
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 76
Issue 1
Article Number 10
DOI https://doi.org/10.1140/epjc/s10052-015-3843-5

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
© The Author(s) 2016 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3





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