Journal article
Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions
- Abstract:
- The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic ep scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of αs(M2Z) and the PDFs, was performed with the result αs(M2Z)=0.1156±0.0011 (exp) +0.0001−0.0002 (model +parameterisation) ±0.0029 (scale). The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of αs(M2Z), αs(M2Z)=0.1155 and 0.118, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 6.8MB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-022-10083-9
- Publisher:
- Springer Nature
- Journal:
- European Physical Journal C: Particles and Fields More from this journal
- Volume:
- 82
- Issue:
- 3
- Article number:
- 243
- Publication date:
- 2022-03-21
- Acceptance date:
- 2022-01-31
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Language:
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English
- Keywords:
- Pubs id:
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1239538
- Local pid:
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pubs:1239538
- Deposit date:
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2022-02-13
Terms of use
- Copyright holder:
- Abt et al.
- Copyright date:
- 2022
- Rights statement:
- ©2022 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Licence:
- CC Attribution (CC BY)
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