Rate measurement of D0 ---> K+ pi- pi0 and constraints on D0 - anti-D0 mixing
Collaboration
10 pages
Published in:
- Phys.Rev.Lett. 87 (2001) 071802
e-Print:
- hep-ex/0105002 [hep-ex]
Report number:
- CLNS-01-1731,
- CLEO-01-07
Experiments:
- CESR-CLEO,
- CESR-CLEO-II
Citations per year
Abstract: (arXiv)
We present an observation and rate measurement of the decay D0 -> K+pi-pi0 produced in 9/fb of e+e- collisions near the Upsilon(4S) resonance. The signal is inconsistent with an upward fluctuation of the background by 4.9 standard deviations. We measured the rate of D0 -> K+pi-pi0 normalized to the rate of D0bar -> K+pi-pi0 to be 0.0043 +0.0011 -0.0010 (stat) +/- 0.0007 (syst). This decay can be produced by doubly-Cabibbo-suppressed decays or by the D0 evolving into a D0bar through mixing, followed by a Cabibbo-favored decay to K+pi-pi0. We also found the CP asymmetry A=(8 +25 -22)% to be consistent with zero.- electron positron: colliding beams
- electron positron: annihilation
- D*(2010): electroproduction
- D*(2010): hadronic decay
- D0: hadronic decay
- D0: branching ratio
- particle identification: flavor
- time dependence
- D0 anti-D0: mixing
- CP: violation
References(17)
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