Title
|
|
|
|
Measurement of the ratio of branching fractions
|
|
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, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
|
|
Publication
|
|
|
|
Ridge, N.Y.
:
American Physical Society
,
2009
|
|
ISSN
|
|
|
|
1550-7998
[print]
1550-2368
[online]
|
|
Volume/pages
|
|
|
|
79
:11
(2009)
, p. 112003,1-112003,8
|
|
ISI
|
|
|
|
000267701300006
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|