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

<!--HTML--><p>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 correc...

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Autor principal: Zanderighi, Giulia
Lenguaje:eng
Publicado: 2023
Materias:
Theory Colloquia
Acceso en línea:http://cds.cern.ch/record/2851396
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author Zanderighi, Giulia
author_facet Zanderighi, Giulia
author_sort Zanderighi, Giulia
collection CERN
description <!--HTML--><p>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 &nbsp;the new calculation of non-perturbative corrections in the 3-jet region and &nbsp;address whether the these calculations lift the tension in the determination of alpha_s. Other findings and considerations will also be discussed.</p>
id cern-2851396
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2023
record_format invenio
spelling cern-28513962023-03-02T21:24:13Zhttp://cds.cern.ch/record/2851396engZanderighi, GiuliaDetermination of the strong coupling using power corrections in the three-jet regionDetermination of the strong coupling using power corrections in the three-jet regionTheory Colloquia<!--HTML--><p>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 &nbsp;the new calculation of non-perturbative corrections in the 3-jet region and &nbsp;address whether the these calculations lift the tension in the determination of alpha_s. Other findings and considerations will also be discussed.</p>oai:cds.cern.ch:28513962023
spellingShingle Theory Colloquia
Zanderighi, Giulia
Determination of the strong coupling using power corrections in the three-jet region
title Determination of the strong coupling using power corrections in the three-jet region
title_full Determination of the strong coupling using power corrections in the three-jet region
title_fullStr Determination of the strong coupling using power corrections in the three-jet region
title_full_unstemmed Determination of the strong coupling using power corrections in the three-jet region
title_short Determination of the strong coupling using power corrections in the three-jet region
title_sort determination of the strong coupling using power corrections in the three-jet region
topic Theory Colloquia
url http://cds.cern.ch/record/2851396
work_keys_str_mv AT zanderighigiulia determinationofthestrongcouplingusingpowercorrectionsinthethreejetregion

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