Publication
Title
Observation of $B_{s}^{0}\rightarrow K^{+}K^{-}$ and measurements of branching fractions of charmless two-body decays of $B^{0}$ and $B_{s}^{0}$ mesons in $\overline{p}p$ collisions at $\sqrt{s}$=1.96 TeV
Author
Institution/Organisation
CDF Collaboration
Abstract
 We search for decays of the type B(s)0→h+h′- (where h,h′=K or π) in 180  pb-1 of p̅ p collisions collected at the Tevatron by the upgraded Collider Detector at Fermilab. We report the first observation of the new mode Bs0→K+K- with a yield of 236±32 events, corresponding to (fs/fd)×B(Bs0→K+K-)/B(B0→K+π-)=0.46±0.08(stat)±0.07(syst), where fs/fd is the ratio of production fractions of Bs0 and B0. We find results in agreement with world averages for the B0 modes, and set the following new limits at 90% C.L.: B(Bs0→K-π+)<5.6×10-6 and B(Bs0→π+π-)<1.7×10-6.
Language
English
Source (journal)
Physical review letters. - New York, N.Y.
Publication
New York, N.Y. : 2006
ISSN
0031-9007
Volume/pages
97:21(2006), p. 1-7
Article Reference
211802
ISI
000242219900009
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Publication type Subject Affiliation Publications with a UAntwerp address