Publication
Title
Measurement of the ratio of branching fractions $\mathcal{B}(B^{\pm}\rightarrow J/\psi\pi^{\pm})/\mathcal{B}(B^{\pm}\rightarrow J/\psi K^{\pm})$
Author
Institution/Organisation
CDF Collaboration
Abstract
 We report a measurement of the ratio of branching fractions of the decays B±→J/ψπ± and B±→J/ψK± using the CDF II detector at the Fermilab Tevatron Collider. The signal from the Cabbibo-suppressed B±→J/ψπ± decay is separated from B±→J/ψK± using the B±→J/ψK± invariant mass distribution and the kinematical differences of the hadron track in the two decay modes. From a sample of 220  pb-1 of pp̅ collisions at √s=1.96  TeV, we observe 91±15 B±→J/ψπ± events together with 1883±34 B±→J/ψK± events. The ratio of branching fractions is found to be B(B±→J/ψπ±)/B(B±→J/ψK±)=(4.86±0.82(stat)±0.15(syst))%.
Language
English
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Publication
Lancaster, Pa : 2009
ISSN
0556-2821
Volume/pages
79:11(2009), p. 112003,1-112003,8
ISI
000267701300006
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Research group Project info Publication type Subject Affiliation Publications with a UAntwerp address