First Observation of the Decay and Measurement of Its Branching Ratio
Collaboration
7 pages
Published in:
- Phys.Rev.Lett. 100 (2008) 021803
Report number:
- FERMILAB-PUB-07-405-E
Experiments:
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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
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