QCD@LHC 2018

Determination of αs(mZ) from a fit of the Z-boson transverse momentum distribution measured by CDF to NNLO+NNLL predictions

28 Aug 2018, 15:15

20m

POT/251 (TU Dresden)

PDFs, 𝛼ₛ and soft QCD PDFs, 𝛼ₛ and soft QCD

Speaker

Stefano Camarda (Johannes Gutenberg Universitaet Mainz (DE))

Description

The strong-coupling constant ${\alpha }_s(m_Z)$ is measured from the transverse momentum distribution of Z bosons measured at $\sqrt{s}=1.96$ TeV with the CDF experiment, using predictions based on qt resummation at NNLO+NNLL, as implemented in the DYTURBO program. The measurement is performed through a simultaneous fit of ${\alpha }_s(m_Z)$, PDFs, and the non-perturbative Sudakov form factor.

Presentation materials

zptalphas.pdf