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Longitudinal Z-boson polarization and the Higgs boson production cross-section
by Simone Amoroso
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|Authors (as Contributors):||Simone Amoroso|
|Date submitted:||2021-07-31 21:41|
|Submitted by:||Amoroso, Simone|
|Submitted to:||SciPost Physics Proceedings|
Lepton pairs are produced copiously in high-energy hadron collisions via electroweak gauge boson exchange, and are one of the most precisely measured final states in proton- proton collisions at the Large Hadron Collider (LHC). We propose that measurements of lepton angular distributions can be used to improve the accuracy of theoretical predic- tions for Higgs boson production cross sections at the LHC. To this end, we exploit the sensitivity of the lepton angular coefficient associated with the longitudinal Z-boson polarization to the parton density function (PDF) for gluons resolved from the incoming protons, in order to constrain the Higgs boson cross section from gluon fusion processes. By a detailed numerical analysis using the open-source platform xFitter, we find that high-statistics determinations of the longitudinally polarized angular coefficient at the LHC Run III and high-luminosity HL-LHC improve the PDF systematics of the Higgs boson cross section predictions by 50 % over a broad range of Higgs boson rapidities.
Submission & Refereeing History
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Reports on this Submission
Anonymous Report 1 on 2022-3-4 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202107_00106v1, delivered 2022-03-04, doi: 10.21468/SciPost.Report.4629
The manuscript is well-written and is certainly worth publishing.
I have only a minor comment.
Either there is a mistake in the caption of Figures #1/#2 or in the legend of the plots regarding the explanation of colored bands. I believe the mistake has been done in the caption, so;
$\bullet$ on page3, Figure 1: CT18NNLO analysis (red), 300 fb−1 (blue), 3 ab−1 (green) $\rightarrow$ CT18NNLO analysis (blue), 300 fb−1 (magenta), 3 ab−1 (cyan)
$\bullet$ on page4, Figure 2: red band $\rightarrow$ blue band, The blue and green bands $\rightarrow$ The magenta (purple) and cyan bands