Journal article

### First observation of the decay Bs0--&gt;Ds-Ds+ and measurement of its branching ratio.

Abstract:
We report the observation of the exclusive decay Bs0-->Ds-Ds+ at the 7.5 standard deviation level using 355 pb(-1) of data collected by the CDF II detector in pp collisions at sqrt[s]=1.96 TeV at the Fermilab Tevatron. We measure the relative branching ratio B(Bs0-->Ds-Ds+)/B(B0-->D-Ds+)=1.44(-0.44)(+0.48). Using the world average value for B(B0-->D-Ds+), we find B(Bs0-->Ds-Ds+)=(9.4(-4.2)(+4.4))x10(-3). This provides a lower bound DeltaGammasCP/Gammas>or=2B(Bs0-->Ds-Ds+)>1.2x10(-2) at 95% C.L.
Publication status:
Published

### Authors

Journal:
Physical review letters
Volume:
100
Issue:
2
Pages:
021803
Publication date:
2008-01-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:1b571861-7faa-4269-a0b3-bdfb40a10bf4
Source identifiers:
12047
Local pid:
pubs:12047
Language:
English
Keywords: