English

$\alpha_s$(2019): Precision measurements of the QCD coupling

High Energy Physics - Phenomenology 2019-07-03 v1 High Energy Physics - Experiment

Abstract

This document collects a written summary of all contributions presented at the workshop "αs\alpha_s(2019): Precision measurements of the strong coupling" held at ECT* (Trento) in Feb. 11--15, 2019. The workshop explored in depth the latest developments on the determination of the QCD coupling αs\alpha_s from the key categories where high precision measurements are available: (i) lattice QCD, (ii) hadronic τ\tau decays, (iii) deep-inelastic scattering and parton distribution functions, (iv) event shapes, jet cross sections, and other hadronic final-states in e+ee^+e^- collisions, (v) Z boson and W boson hadronic decays, and (vi) hadronic final states in p-p collisions. The status of the current theoretical and experimental uncertainties associated to each extraction method, and future perspectives were thoroughly reviewed. Novel αs\alpha_s determination approaches were discussed, as well as the combination method used to obtain a world-average value of the QCD coupling at the Z mass pole.

Keywords

Cite

@article{arxiv.1907.01435,
  title  = {$\alpha_s$(2019): Precision measurements of the QCD coupling},
  author = {David d'Enterria and Stefan Kluth and S. Alekhin and P. A. Baikov and A. Banfi and F. Barreiro and A. Bazavov and S. Bethke and J. Blümlein and D. Boito and N. Brambilla and D. Britzger and S. J. Brodsky and S. Camarda and K. G. Chetyrkin and D. d'Enterria and M. Dalla Brida and X. Garcia i Tormo and M. Golterman and R. Horsley and J. Huston and M. Jamin and A. Kardos and A. Keshavarzi and S. Kluth and J. Kühn and K. Maltman and R. Miravitllas and S. -O. Moch and P. F. Monni and D. Nomura and T. Onogi and R. Pérez-Ramos and S. Peris and P. Petreczky and J. Pires and A. Poldaru and K. Rabbertz and F. Ringer and S. Sint and R. Sommer and G. Somogyi and J. Soto and Z. Szőr and H. Takaura and T. Teubner and Z. Trócsányi and Z. Tulipánt and A. Vairo and A. Verbytskyi and J. H. Weber and X. Weichen and G. Zanderighi},
  journal= {arXiv preprint arXiv:1907.01435},
  year   = {2019}
}

Comments

154 pages, 125 figures. Workshop Proceedings, ECT*, Trento, 11--15 February 2019