First Observation and Dalitz Analysis of the D0→K0Sηπ0 Decay
Abstract
Using 9.0 fb-1 of integrated luminosity in e+e- collisions near the Υ(4S) mass collected with the CLEO II.V detector we report the first observation of the decay D0→K0Sηπ0. We measure the ratio of branching fractions, BR(D0→K0Sηπ0)BR/(D0→K0Sπ0)=0.46±0.07±0.06. We perform a Dalitz analysis of 155 selected D0→K0Sηπ0 candidates and find leading contributions from a0(980)K0S and K*(892)η intermediate states.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 2004
- DOI:
- arXiv:
- arXiv:hep-ex/0405011
- Bibcode:
- 2004PhRvL..93k1801R
- Keywords:
-
- 13.25.Ft;
- 13.25.Jx;
- 14.40.Aq;
- 14.40.Lb;
- Decays of charmed mesons;
- Decays of other mesons;
- pi K and eta mesons;
- Charmed mesons;
- High Energy Physics - Experiment
- E-Print:
- 9 pages postscript,also available through this http://www.lns.cornell.edu/public/CLNS/, submitted to PRL