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Impact of heavy-quark production measurements in the CT18 global QCD analysis of PDFs
by Marco Guzzi, Pavel Nadolsky, Keping Xie
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Marco Guzzi · Keping Xie |
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| Preprint Link: | https://arxiv.org/abs/2108.01791v1 (pdf) |
| Date accepted: | 2021-08-30 |
| Date submitted: | 2021-08-05 14:46 |
| Submitted by: | Guzzi, Marco |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
Abstract
We discuss the impact of heavy-flavor production measurements in semi-inclusive deep inelastic scattering at HERA on the CTEQ-TEA PDFs. In particular, we study the impact of the latest charm and bottom production measurements from the H1 and ZEUS collaborations on the gluon, and the interplay of these measurements with the data ensemble of the recent CT18 global QCD analysis.
Published as SciPost Phys. Proc. 8, 164 (2022)
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2021-8-9 (Invited Report)
- Cite as: Anonymous, Report on arXiv:2108.01791v1, delivered 2021-08-09, doi: 10.21468/SciPost.Report.3358
Strengths
Clear exposition of a problem with heavy quark data
Weaknesses
None
Report
This is a conference proceedings investigating the difficulty that the CT group has had fitting HERA heavy quark data from the most recent combination of HERA c,b data. This difficulty is shared by other fitting groups, MSHT,NNPDF and HERA themselves. This paper gives the result of limited specific changes to the assumptions made for the PDF fit, which shed some light on the problem. I look forward to the further work which is promised.
Requested changes
None