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Publikation: Zeitschriftenartikel
Measurement of the CKM angle using B±DK± with DK0S+, K0SK+K decays
Grunddaten
Abstract
Autoren
Einrichtung
Grunddaten
Titel
Measurement of the CKM angle using B±DK± with DK0S+, K0SK+K decays
Erscheinungsjahr
2018
Heft-Nr.
8
Jahr
2018
Publikationsform
Elektronische Ressource
Publikationsart
Zeitschriftenartikel
Sprache
Englisch
DOI
10.1007/JHEP08(2018)176
Letzte Änderung
19.09.2020 06:04:45
Bearbeitungsstatus
durch UB Rostock abschließend validiert
Dauerhafte URL
http://purl.uni-rostock.de/fodb/pub/64143
Links zu Katalogen
Abstract
A binned Dalitz plot analysis of B± DK± decays, with D K S 0 + and D K S 0 K+K, is used to perform a measurement of the CP-violating observables x± and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle . The analysis is performed without assuming any D decay model, through the use of information on the strong-phase variation over the Dalitz plot from the CLEO collaboration. Using a sample of proton-proton collision data collected with the LHCb experiment in 2015 and 2016, and corresponding to an integrated luminosity of 2.0 fb1, the values of the CP violation parameters are found to be x = (9.0 ± 1.7 ± 0.7 ± 0.4) × 102, y = (2.1 ± 2.2 ± 0.5 ± 1.1) × 102, x+ = (7.7 ± 1.9 ± 0.7 ± 0.4) × 102, and y+ = (1.0 ± 1.9 ± 0.4 ± 0.9) × 102. The first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty (on the strong-phase measurements. These values are used to obtain = (87 12 + 11 ), rB = 0.086 0.014 + 0.013 , and B = (101±11)°, where rB is the ratio between the suppressed and favoured B-decay amplitudes and B is the corresponding strong-interaction phase difference. This measurement is combined with the result obtained using 2011 and 2012 data collected with the LHCb experiment, to give = (80 9 + 10 ), rB = 0.080 ± 0.011, and B = (110 ± 10)°. Open image in new window
Autoren
Aaij, Roel
D'Argent, Philippe
Bachmann, Sebastian
Berninghoff, Daniel
Braun, Svende
De Cian, Michel
Comerma-Montells, Albert
Dordei, Francesca
Dziewiecki, Michal
Gerick, David
Grünberg, Oliver
Han, Xiaoxue
Hansmann-Menzemer, Stephanie
Heß, Miriam
Kecke, Matthieu
Khanji, Basem
Kolpin, Michael
Kopecná, Renata
Leverington, Blake
Marks, Jörg
Meinert, Nis
Mitzel, Dominik
Neubert, Sebastian
Neuner, Max
Piucci, Alessio
Stahl, Marian
Stemmle, Simon
van Tilburg, Jeroen
Uwer, Ulrich
Viemann, Harald
Waldi, Roland
Zhelezov, Alexey
Grabowski, Jascha
Einrichtung
MNF/Institut für Physik (IfPH)