literature

First Observation of the Decay Bs0DsDs+B_s^0 \to D_s^- D_s^+ and Measurement of Its Branching Ratio

Collaboration
Oct, 2007
7 pages
Published in:
  • Phys.Rev.Lett. 100 (2008) 021803
Report number:
  • FERMILAB-PUB-07-405-E
Experiments:

Citations per year

200820122016202020240123456
Abstract: (APS)
We report the observation of the exclusive decay Bs0 -gt Ds- Ds+ at the 7.5 standard deviation level using 355 pb(-1) of data collected by the CDF II detector in p[overline p] collisions at sqrt(s) =1.96 TeV at the Fermilab Tevatron. We measure the relative branching ratio [script B] (Bs0 -gt Ds- Ds+ )/[script B] (B0-gt D-Ds+ )=1.44-0.44(+0.48) . Using the world average value for [script B] (B0-gt D-Ds+ ), we find [script B] (Bs0 -gt Ds- Ds+ )=(9.4-4.2(+4.4) )times10(-3). This provides a lower boun d Delta Gamma s(CP) /Gamma sgt= 2[script B] (Bs0 -gt Ds- Ds+ )gt1.2times10(-2) at 95% C.L.
  • 14.40.Nd
  • 13.25.Hw
  • anti-p p: colliding beams
  • anti-p p: inclusive reaction
  • bottom
  • quark: pair production
  • B/s0: hadronic decay
  • charmed meson: pair production
  • D/s: hadronic decay
  • B/s0: branching ratio