Publikation: Zeitschriftenartikel

Measurement of the B0s branching fraction and search for the decay B0

Grunddaten
Abstract
Autoren
Einrichtung

Grunddaten

Titel	Measurement of the B0s branching fraction and search for the decay B0
Veröffentlicht in	Journal of high energy physics : JHEP ; a refereed journal written, run, and distributed by electronic means. - Berlin : Springer
Erscheinungsjahr	2015
Seiten (von – bis)	1 – 17
Heft-Nr.	10
Jahr	2015
Publikationsform	Elektronische Ressource
Publikationsart	Zeitschriftenartikel
Sprache	Englisch
DOI	10.1007/JHEP10(2015)053
Letzte Änderung	09.04.2021 06:02:26
Bearbeitungsstatus	durch UB Rostock abschließend validiert
Dauerhafte URL	http://purl.uni-rostock.de/fodb/pub/49513
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Abstract

Using a dataset corresponding to an integrated luminosity of 3.0 fb1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the Bs0 branching fraction is measured to beBs0=1.84±0.05stat±0.07syst±0.11fs/fd±0.12norm×105,$$ \mathrm{\mathcal{B}}\left({B}_s^0\to \phi \phi \right)=\left(1.84\pm 0.05\left(\mathrm{stat}\right)\pm 0.07\left(\mathrm{syst}\right)\pm 0.11\left({f}_s/{f}_d\right)\pm 0.12\left(\mathrm{norm}\right)\right)\times 1{0}^{-5}, $$where fs/fdrepresents the ratio of the Bs0to B0 production cross-sections, and the B0 K*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 is also made. No signal is observed, and an upper limit on the branching fraction is set asB0<2.8×108$$ \mathrm{\mathcal{B}}\left({B}^0\to \phi \phi \right)<2.8\times 1{0}^{-8} $$at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.

Autoren

Aaij, Roel

Aquines Gutiérrez, Osvaldo

D'Argent, Philippe

Bachmann, Sebastian

Bien, Alexander

Blouw, Johan

Braun, Svende

Britsch, Markward

Comerma-Montells, Albert

De Cian, Michel

Dordei, Francesca

Esen, Sevda

Gerick, David

Gersabeck, Evelina

Grillo, Lucia

Han, Xiaoxue

Hansmann-Menzemer, Stephanie

Jäger, Andreas

Kecke, Matthieu

Kolpin, Michael

Kreplin, Katharina

Krocker, Georg Alexander

Leverington, Blake

Marks, Jörg

Meißner, Marco

Mitzel, Dominik

Neubert, Sebastian

Neuner, Max

Nikodem, Thomas

Piucci, Alessio

Schmelling, Michael

Stahl, Marian

Uwer, Ulrich

Vesterinen, Mika

Voß, Christian

Wandernoth, Sebastian

Zhelezov, Alexey

Einrichtung

MNF/Institut für Physik (IfPH)