Name: Determination of the strong coupling using power corrections in the three-jet region
Start: 2023-03-01T14:00:00+01:00
End: 2023-03-01T16:00:00+01:00
Location: CERN

Description

In the determination of the strong coupling constant from event shape variables in e+e- collisions, there has been a long-standing discrepancy between determinations that rely on analytic models for the non-perturbative corrections, and those that model hadronization corrections with Monte Carlo generators. Analytic approaches calculate non-perturbative corrections in the 2-jet region and apply them also to the 3-jet region. We study the impact of the new calculation of non-perturbative corrections in the 3-jet region and address whether the these calculations lift the tension in the determination of alpha_s. Other findings and considerations will also be discussed.

67346292748

Elena Gianolio

Zoom Recording Operations 2, Irene Valenzuela Agui, Benoit Loyer, Clement Montcharmont, Shota Komatsu, Pascal Pignereau, Pier Francesco Monni, John Cassar, AVC support account, Thomas Nik Bazl Fard

80279029

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Determination of the strong coupling using power corrections in the three-jet region

by Giulia Zanderighi (Max Planck Society (DE))

4/3-006 - TH Conference Room

CERN