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arXiv · 2502.10630

Impact of lattice gluon dataset on CTEQ-TEA global PDFs

Alim Ablat·Sayipjamal Dulat·Tie-Jiun Hou·Huey-Wen Lin·Keping Xie·C. -P. Yuan
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Abstract

We investigate the impact of the latest gluon parton results from lattice QCD on the global parton distribution function (PDF) analysis within the CTEQ-TEA framework. The dependence on PDF parameterization is explored using the CT18As variant, incorporating the ATLAS 7 TeV precision $W,Z$ dataset and introducing more flexible parameters to allow strangeness asymmetry at the starting scale $Q_0$. The interplay between lattice input and collider inclusive jet datasets is examined by including the post-CT18 inclusive jet datasets from recent LHC measurements and/or removing all collider inclusive jet datasets. Finally, we demonstrate several phenomenological implications at the LHC, focusing on gluon-gluon parton luminosity and related processes, such as the production of a Higgs-like scalar, top-quark pairs, and their associated production with an additional jet, Higgs, or $Z$ boson.

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Alim Ablat, Sayipjamal Dulat, Tie-Jiun Hou, Huey-Wen Lin, Keping Xie, C. -P. Yuan. 2025-02-15. Impact of lattice gluon dataset on CTEQ-TEA global PDFs. https://arxiv.org/abs/2502.10630

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