Speaker
Sung Woo Youn
(Northwestern U./Fermilab)
Description
We search for the semi-inclusive process Bs to Ds(*)Ds(*) using
2.8 fb-1 of ppbar collisions at sqrt{s}=1.96 TeV recorded by the D0
detector operating at the Fermilab Tevatron Collider. We observe 26.6 pm 8.4
signal events with a significance above background of 3.2 standard
deviations yielding a branching ratio of 0.035 pm 0.010 (stat) pm 0.011(syst).
Under certain theoretical assumptions, these double-charm final states saturate
CP-even eigenstates in the Bs decays resulting in a width difference
of DeltaGamma(CP)_s/Gamma_s = 0.072 pm 0.021 (stat) pm 0.022 (syst).
Authors
Aurelio Juste
(Fermilab)
Horst Wahl
(Florida State University)
Stefan Soldner-Rembold
(University of Manchester)
