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Longitudinal Z-boson polarization and the Higgs boson production cross-section
by Simone Amoroso
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Submission summary
| Authors (as registered SciPost users): | Simone Amoroso |
| Submission information | |
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| Preprint Link: | scipost_202107_00106v2 (pdf) |
| Date accepted: | 2022-04-04 |
| Date submitted: | 2022-03-30 08:20 |
| Submitted by: | Amoroso, Simone |
| 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
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.
List of changes
- fixed wrong figure caption
Published as SciPost Phys. Proc. 8, 016 (2022)