Title First observation of the decay $B_{s}^{0}\rightarrow D_{s}^{-}D_{s}^{+}$ and measurement of its branching ratio Author Aaltonen, T. Van Remortel, N. et al. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2008 New York, N.Y. , 2008 Subject Physics Source (journal) Physical review letters. - New York, N.Y. Volume/pages 100(2008) :2 , p. 021803,1-021803,7 ISSN 0031-9007 ISI 000252471200019 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp 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 pp̅ collisions at √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)×10-3. This provides a lower bound ΔΓsCP/Γs≥2B(Bs0→Ds-Ds+)>1.2×10-2 at 95% C.L. Full text (open access) https://repository.uantwerpen.be/docman/irua/8b6dac/6ad92244.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000252471200019&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000252471200019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000252471200019&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle