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Description
I will present my ongoing work on the extraction of the strong coupling constant from the transverse momentum spectrum of the Z boson. I will discuss the precision targets required from the theory side and describe in detail the strategy adopted for the extraction, including the fitting procedure. This analysis is particularly challenging, as it relies on a complex theoretical framework and requires several theoretical inputs. The focus of the talk will be on perturbative and non-perturbative predictions and their associated uncertainties, with a brief discussion of parton distribution function uncertainties. Building on the experience of the ATLAS extraction and the subsequent discussions within the community, this work aims to address the previously identified issues within a fully consistent theoretical framework. All results shown will be based on Asimov tests, while the same theoretical model, modulo minor changes, is currently being employed in the ongoing fits to real data.