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Event-shape variables and alpha_s determinations using the ATLAS detector

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  • UserManuel Alvarez Estevez (UAM Madrid)
  • ClockTuesday 01 March 2022, 16:00-17:00
  • HouseRyle Seminar Room.

If you have a question about this talk, please contact Heribertus Bayu Hartanto.

I will discuss measurements of hadronic event-shape variables in multi-jet events in proton-proton collisions using the ATLAS detector. In addition to the classical variables, the transverse energy-energy correlations and their associated azimuthal asymmetry are presented. These results provide a precision test of perturbative Quantum Chromodynamics at large momentum transfers. From a comparison of data with theory, the strong coupling constant is extracted at NLO accuracy. Nowadays, NNLO predictions are available for observables requiring three jets in the final state. Thus, alpha_s determinations from multi-jet measurements can be advanced to NNLO accuracy.

This talk is part of the Cavendish HEP Seminars series.

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