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arXiv · 2108.06782

Longitudinal Z-boson polarization and the Higgs boson production cross-section

Simone Amoroso
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Abstract

We present a study of the LHC (and HL-LHC) potential towards a precise determination of the gluon parton distribution function of the proton at intermediate Bjorken-$x$ from measurements of Drell-Yan production. To this extent, we exploit a clean and theoretically well predicted observable: the Drell-Yan lepton angular coefficient $A_0$, associated with the longitudinal polarization of the Z boson. Through a detailed numerical analysis using the open-source xFitter platform, we illustrate how this observable can provide significant sensitivity over current determinations of the gluon PDF, and a reduction in the PDF uncertainty on the Higgs boson production cross-section by a factor of over 50\%.

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Simone Amoroso. 2021-08-15. Longitudinal Z-boson polarization and the Higgs boson production cross-section. https://arxiv.org/abs/2108.06782

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