Publikation: Zeitschriftenartikel

First Observation of the Decay B0s K-+ and a Measurement of |Vub|=|Vcb|

Grunddaten
Abstract
Autoren
Einrichtung

Grunddaten

Titel	First Observation of the Decay B0s K-+ and a Measurement of \|Vub\|=\|Vcb\|
Erscheinungsjahr	2021
Seiten (von – bis)	1 – 11
Band	126
Heft-Nr.	8
Jahr	2021
Publikationsform	Elektronische Ressource
Publikationsart	Zeitschriftenartikel
Sprache	Englisch
DOI	10.1103/PhysRevLett.126.081804
Letzte Änderung	10.02.2022 06:01:52
Bearbeitungsstatus	durch UB Rostock abschließend validiert
Dauerhafte URL	http://purl.uni-rostock.de/fodb/pub/67367
Links zu Katalogen

Abstract

The first observation of the suppressed semileptonic B0sK+ decay is reported. Using a data sample recorded in pp collisions in 2012 with the LHCb detector, corresponding to an integrated luminosity of 2 fb1, the branching fraction B(B0sK+) is measured to be [1.06±0.05(stat)±0.08(syst)]×104, where the first uncertainty is statistical and the second one represents the combined systematic uncertainties. The decay B0sDs+, where Ds is reconstructed in the final state K+K, is used as a normalization channel to minimize the experimental systematic uncertainty. Theoretical calculations on the form factors of the B0sK and B0sDs transitions are employed to determine the ratio of the Cabibbo-Kobayashi-Maskawa matrix elements |Vub|/|Vcb| at low and high B0sK momentum transfer.

Autoren

Aaij, Roel
Archilli, Flavio
Bachmann, Sebastian
Berninghoff, Daniel
Borsato, Martino
Dziewiecki, Michal
Frau, Giulia
Gerick, David
Grabowski, Jascha
Günther, PaulAndré
Han, Xiaoxue
Hansmann-Menzemer, Stephanie
Hu, Jiangqiao
Kopecná, Renata
Leverington, Blake
Li, Peilian
Malygina, Hanna
Marks, Jörg
Meinert, Nis
Morris, A. B.
Neubert, Sebastian
Piucci, Alessio
Sarpis, Mindaugas
Schmelling, Michael
Skidmore, Nicola
Stemmle, Simon
Unverzagt, Daniel Joachim
Uwer, Ulrich
Viemann, Harald
Waldi, Roland
Wang, Chishuai
Witola, Lukas
Zavertyaev, M.
Zhelezov, Alexey

Einrichtung

MNF/Institut für Physik (IfPH)