Journal
PHYSICAL REVIEW D
Volume 72, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.72.011103
Keywords
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We report the observation of (B) over bar (0)-> D-0 eta' and the first observation of (B) over bar (0)-> D-*0 eta', using 140 fb(-1) of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We find the branching fractions to be B((B) over bar (0)-> D-0 eta')=[1.14 +/- 0.20(stat)+0.10-0.13(syst)] x 10(-4) and B((B) over bar (0)-> D-*0 eta')=[1.21 +/- 0.34(stat)+/- 0.22(syst)] x 10(-4) with significances including systematic uncertainties of 8.9 and 5.3 standard deviations, respectively.
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