Theory Colloquia

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

by Giulia Zanderighi (Max Planck Society (DE))

Europe/Zurich
4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

110
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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.

Videoconference
TH colloquia
Zoom Meeting ID
67346292748
Host
Elena Gianolio
Alternative hosts
Zoom Recording Operations 2, Irene Valenzuela Agui, Benoit Loyer, Clement Montcharmont, Pier Francesco Monni, AVC support account, Urs Wiedemann, Thomas Nik Bazl Fard, Pascal Pignereau
Passcode
80279029
Useful links
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