PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T07 Top and Electroweak Physics
Determining SMEFT and PDF parameters simultaneously based on the CTEQ-TEA framework
X. Shen*, J. Gao, M. Gao, T.J. Hobbs and D. Liu
Full text: pdf
Pre-published on: February 20, 2024
Published on: March 21, 2024
The SM effective field theory (SMEFT) provides a model-independent and systematically improvable framework for new physics searches. In this talk, we outline our approach of simultaneously fitting SMEFT parameters and Probability Density Functions (PDFs) in an extension of the CT18 global analysis framework. To enhance the efficiency of our global fitting and Lagrange multiplier scans, we leverage machine-learning techniques. We focus on several representative operators relevant to top-quark pair production and jet production. Through this approach, we establish self-consistent limitations on the associated Wilson coefficients, and explore the correlations between these Wilson coefficients and the PDFs.
DOI: https://doi.org/10.22323/1.449.0291
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