Event-shape variables and alpha_s determinations using the ATLAS detector

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• Manuel Alvarez Estevez (UAM Madrid)
• Tuesday 01 March 2022, 16:00-17:00
• Ryle 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.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Cavendish HEP Seminars
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Ryle Seminar Room
• School of Physical Sciences
• Thin Film Magnetic Talks
• few29

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