Publikation: Zeitschriftenartikel

First measurement of the differential branching fraction and CP asymmetry of the B± ±+ decay

Grunddaten
Abstract
Autoren
Einrichtung

Grunddaten

Titel	First measurement of the differential branching fraction and CP asymmetry of the B± ±+ decay
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 – 20
Heft-Nr.	10
Jahr	2015
Publikationsform	Elektronische Ressource
Publikationsart	Zeitschriftenartikel
Sprache	Englisch
DOI	10.1007/JHEP10(2015)034
Letzte Änderung	07.04.2021 06:01:53
Bearbeitungsstatus	durch UB Rostock abschließend validiert
Dauerhafte URL	http://purl.uni-rostock.de/fodb/pub/49802
Links zu Katalogen

Abstract

The differential branching fraction with respect to the dimuon invariant mass squared, and the CP asymmetry of the B± ±+ decay are measured for the first time. The CKM matrix elements |Vtd| and |Vts|, and the ratio |Vtd/Vts| are determined. The analysis is performed using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The total branching fraction and CP asymmetry of B± ±+ decays are measured to beB±±+=1.83±0.24±0.05×108andACPB±±+=0.11±0.12±0.01,$$ \begin{array}{l}\mathrm{\mathcal{B}}\left({B}^{\pm}\to {\pi}^{\pm }{\mu}^{+}{\mu}^{-}\right)=\left(1.83\pm 0.24\pm 0.05\right)\times {10^{-}}^8\;\mathrm{and}\hfill \\ {}{\mathcal{A}}_{CP}\left({B}^{\pm}\to {\pi}^{\pm }{\mu}^{+}{\mu}^{-}\right)=-0.11\pm 0.12\pm 0.01,\hfill \end{array} $$where the first uncertainties are statistical and the second are systematic. These are the most precise measurements of these observables to date, and they are compatible with the predictions of the Standard Model.

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
Grünberg, Oliver
Han, Xiaoxue
Hansmann-Menzemer, Stephanie
Heß, Miriam
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
Waldi, Roland
Wandernoth, Sebastian
Zhelezov, Alexey

Einrichtung

MNF/Institut für Physik (IfPH)