|
Title
|
|
|
|
First observation of and measurement of the ratio of branching fractions
|
|
|
Author
|
|
|
|
|
|
|
Institution/Organisation
|
|
|
|
CDF Collaboration
|
|
|
Abstract
|
|
|
|
| A combined mass and particle identification fit is used to make the first observation of the decay B̅ s0→Ds±K∓ and measure the branching fraction of B̅ s0→Ds±K∓ relative to B̅ s0→Ds+π-. This analysis uses 1.2 fb-1 integrated luminosity of pp̅ collisions at √s=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a B̅ s0→Ds±K∓ signal with a statistical significance of 8.1σ and measure B(B̅ s0→Ds±K∓)/B(B̅ s0→Ds+π-)=0.097±0.018(stat)±0.009(syst). |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Physical review letters. - New York, N.Y., 1958, currens
|
|
|
Publication
|
|
|
|
New York, N.Y.
:
American Physical Society
,
2009
|
|
|
ISSN
|
|
|
|
0031-9007
[print]
1079-7114
[online]
|
|
|
DOI
|
|
|
|
10.1103/PHYSREVLETT.103.191802
|
|
|
Volume/pages
|
|
|
|
103
:19
(2009)
, p. 191802,1-191802,7
|
|
|
ISI
|
|
|
|
000271568200007
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|