Publikation: Zeitschriftenartikel

First measurement of the CP-violating phase [phi] dd [bar] s in B0s(K+)(K+) decays

Grunddaten
Abstract
Autoren
Einrichtung

Grunddaten

Titel	First measurement of the CP-violating phase [phi] dd [bar] s in B0s(K+)(K+) decays
Erscheinungsjahr	2018
Heft-Nr.	3
Jahr	2018
Publikationsform	Elektronische Ressource
Publikationsart	Zeitschriftenartikel
Sprache	Englisch
DOI	10.1007/JHEP03(2018)140
Letzte Änderung	30.01.2021 06:05:49
Bearbeitungsstatus	durch UB Rostock abschließend validiert
Dauerhafte URL	http://purl.uni-rostock.de/fodb/pub/64955
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Abstract

A flavour-tagged decay-time-dependent amplitude analysis of B s 0 (K+)(K+) decays is presented in the K± mass range from 750 to 1600MeV/c2. The analysis uses pp collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb1. Several quasi-two-body decay modes are considered, corresponding to K± combinations with spin 0, 1 and 2, which are dominated by the K 0 * (800)0 and K 0 * (1430)0, the K*(892)0 and the K 2 * (1430)0 resonances, respectively. The longitudinal polarisation fraction for the B0sK(892)K¯¯¯¯¯(892)0Bs0K(892)K¯(892)0 {B}_s^0\to {K}^{\ast }(892){}^{\circ}{\overline{K}}^{\ast }{(892)}^0 decay is measured as fL = 0.208 ± 0.032 ± 0.046, where the first uncertainty is statistical and the second is systematic. The first measurement of the mixing-induced CP-violating phase, dd¯¯¯ssdd¯ {\phi}_s^{d\overline{d}} , in bdd¯¯¯sbdd¯s b\to d\overline{d}s transitions is performed, yielding a value of dd¯¯¯s=0.10±0.13(stat)±0.14sdd¯=0.10±0.13(stat)±0.14 {\phi}_s^{d\overline{d}}=-0.10\pm 0.13\left(\mathrm{stat}\right)\pm 0.14 (syst) rad. Open image in new window

Autoren

Aaij, Roel
D'Argent, Philippe
Bachmann, Sebastian
Berninghoff, Daniel
Braun, Svende
Comerma-Montells, Albert
De Cian, Michel
Dziewiecki, Michal
Gerick, David
Grabowski, Jascha
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
Nikodem, Thomas
Piucci, Alessio
Skidmore, Nicola
Stahl, Marian
Stemmle, Simon
Uwer, Ulrich
Viemann, Harald
Waldi, Roland
Zhelezov, Alexey
van Tilburg, Jeroen

Einrichtung

MNF/Institut für Physik (IfPH)