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Impact of LHC dijet production in pp and pPb collisions on the nNNPDF2.0 nuclear PDFs
by Rabah Abdul Khalek
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Submission summary
| Authors (as registered SciPost users): | Rabah Abdul Khalek |
| Submission information | |
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| Preprint Link: | scipost_202108_00027v1 (pdf) |
| Date submitted: | 2021-08-13 14:25 |
| Submitted by: | Abdul Khalek, Rabah |
| 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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| Approach: | Phenomenological |
Abstract
We quantify the impact of LHC dijet production measurements on the nNNPDF2.0 nuclear PDFs in twofold. First, from a proton baseline based on NNPDF3.1 and augmented by pp dijet production measurements from ATLAS and CMS at 7 and 8 TeV. Second, from a new nNNPDF2.0 global analysis including the ratio of pPb to pp dijet spectra from CMS at 5 TeV. We show that as opposed to the CMS at 5 TeV absolute pp and pPb dijet spectra, the pPb/pp ratio is well described in a nPDFs fit and provides strong constraints on the gluon of lead.
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Nice report on the inclusion of CMS data on PDFs.
One suggestion for clarity, in the second-to-last sentence in the conclusion, the phrase "however it remains within uncertainties of nNNPDF2.0∗
and therefore not as significant"
should be perhaps rephrased to make it clear what is less significant, is it the s+sbar in particular or the global suppression?