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Impact of W and Z Production Data and Compatibility of Neutrino DIS Data in Nuclear Parton Density Extraction
by K. F. Muzakka, P. Duwent\"aster, T. J. Hobbs, T. Je\v{z}o, M. Klasen, K. Kova\v{r}\'{\i}k , A. Kusina, J. G. Morf\'{i}n, F. I. Olness, R. Ruiz, I. Schienbein, J. Y. Yu
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Submission summary
| Authors (as registered SciPost users): | Timothy Hobbs · Khoirul Faiq Muzakka |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202107_00076v1 (pdf) |
| Date submitted: | 2021-07-29 01:10 |
| Submitted by: | Muzakka, Khoirul Faiq |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational, Phenomenological |
Abstract
Vector boson production and neutrino deep-inelastic scattering (DIS) data are crucial for constraining the strange quark parton distribution function (PDF) and more generally for flavor decomposition in PDF extractions. We extend the nCTEQ15 nuclear PDFs (nPDFs) by adding the recent $W$ and $Z$ production data from the LHC in a global nPDF fit. The new nPDF set, referred to as nCTEQ15WZ, is used as a starting point for a follow-up study in which we assess the compatibility of neutrino DIS data with charged lepton DIS data. Specifically, we re-analyze neutrino DIS data from NuTeV, Chorus, and CDHSW, as well as dimuon data from CCFR and NuTeV. To scrutinize the level of compatibility, different kinematic regions of the neutrino data are investigated. Fits to the neutrino data alone and a preliminary global fit are performed and compared to nCTEQ15WZ.
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Reports on this Submission
Anonymous Report 1 on 2022-2-28 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202107_00076v1, delivered 2022-02-28, doi: 10.21468/SciPost.Report.4565
Report
The paper, "Impact of W and Z Production Data and Compatibility of Neutrino
DIS Data in Nuclear Parton Distribution Functions", presents the results from a PDF analysis (nCTEQ15WZ), which includes W and Z boson production data from the LHC, and have extended this fit to include new data from neutrino DIS experiments, as well as charm dimuon data. The discrepancy between the fits presented here in the high and low x regions are interesting and are evident in the strange PDFs at low x values.
There are two comments that should be addressed. In section 4.2 I see that you have written "...lower Q values." and in the caption to Fig.4 you write "Q = 2 GeV". Throughout the rest of the paper you use Q^2 and GeV^s, is that what was intended to be written in section 4? Also, what is the reason for choosing a tolerance of 45 in section 4.2?