Measurement of the form factors in the decay D+-->K¯*0e+νe
Abstract
We have measured the three form factors governing the decay D+-->K¯ *0e+νe, observed in Fermilab photoproduction experiment E691, using the complete decay distribution of the data. The results are A1(0)=0.46+/-0.05+/-0.05, A2(0)=0.0+/-0.2+/-0.1, and V(0)=0.9+/-0.3+/-0.1 for the two axial-vector and the vector form factors, respectively. The K¯ *0 mesons have a ratio of longitudinal to transverse polarization of 1.8+0.6-0.4+/-0.3. These results are significantly different from values predicted by a number of different models.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 1990
- DOI:
- 10.1103/PhysRevLett.65.2630
- Bibcode:
- 1990PhRvL..65.2630A
- Keywords:
-
- 13.20.Fc;
- 14.40.Jz;
- Decays of charmed mesons