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$O(α^3_s)$ calculations for the inclusive determination of $|V_{cb}|$

Schönwald, Kay 1
1 Institut für Theoretische Teilchenphysik (TTP), Karlsruher Institut für Technologie (KIT)

Abstract:

For the determination of the Cabbibo-Kobayashi-Maskawa matrix element $|V_{cb}|$ from inclusive data precise knowledge of the semileptonic $b→c$ decay rate is necessary. Since this observable has a bad convergence behavior when the heavy quark masses are expressed in the on-shell or $\overline{MS}$ scheme the latest determinations have been obtained in the so called kinetic mass scheme. The relation between the different schemes needs to be known to high precision as well. In this proceedings we present our recent calculations which push the precision of both ingredients to $O(α^3_s$). The results can be used to improve the inclusive determination of $|V_{cb}|$.


Verlagsausgabe §
DOI: 10.5445/IR/1000162382
Veröffentlicht am 21.09.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 16.06.2023
Sprache Englisch
Identifikator ISSN: 1824-8039
KITopen-ID: 1000162382
Erschienen in Proceedings of 11th International Workshop on the CKM Unitarity Triangle — PoS(CKM2021)
Veranstaltung 11th International Workshop on the CKM Unitarity Triangle (CKM 2021), Melbourne, Australien, 22.11.2021 – 26.11.2021
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Seiten Art.-Nr.: 054
Serie Pos proceedings of science ; 411
Vorab online veröffentlicht am 13.01.2023
Nachgewiesen in Scopus
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