First Observation ofB¯s0→Ds±K∓and Measurement of the Ratio of Branching FractionsB(B¯s0→Ds±K∓)/B(B¯s0→Ds+π−)
نویسندگان
چکیده
منابع مشابه
First observation of the decay Bs0-->Ds-Ds+ and measurement of its branching ratio.
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...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2009
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.103.191802