Publications [#309457] of Seog Oh

Papers Published

1. Aaltonen; T; others, {First observation of the decay $B^0_s \to D^-_s D^+_s$ and measurement of its branching ratio}, Phys. Rev. Lett., vol. 100 no. 2 (2008), pp. 021803 [doi]
   (last updated on 2026/01/21)

   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 $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV at the Fermilab Tevatron. We measure the relative branching ratio [script B](Bs0-->Ds-Ds+)/[script B](B0-->D-Ds+) =1.44-0.44+0.48. Using the world average value for [script B](B0-->D-Ds+), we find [script B](Bs0-->Ds-Ds+) =(9.4-4.2+4.4)×10-3. This provides a lower bound DeltaGammasCP/Gammas> =2[script B](Bs0-->Ds-Ds+)>1.2×10-2 at 95% C.L.