First Observation ofB¯s0→Ds±K∓and Measurement of the Ratio of Branching FractionsB(B¯s0→Ds±K∓)/B(B¯s0→Ds+π−)
Physical Review Letters - United States
doi 10.1103/physrevlett.103.191802
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Date
November 3, 2009
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American Physical Society (APS)