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Manuel Alvarez Estevez (UAM Madrid)
Tuesday 01 March 2022, 16:00-17:00
Event-shape variables and alpha_s determinations using the ATLAS detector
- đ¤ Speaker: Manuel Alvarez Estevez (UAM Madrid)
- đ Date & Time: Tuesday 01 March 2022, 16:00 - 17:00
- đ Venue: Ryle Seminar Room
Abstract
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.
Series This talk is part of the Cavendish HEP Seminars series.
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