Measurement of the D0, D+, and D+s lifetimes
Abstract
We have measured the lifetimes of the D0, D+, and D+s mesons which were produced by a high-energy photon beam incident on beryllium. Using the Fermilab Tagged Photon Spectrometer with a silicon-microstrip vertex detector we have collected 108 events from which we have extracted about 4200 D0 decays in the K-π+ and K-π+π-π+ modes, 3000 D+ into the K-π+π+ channel, and a total of 230 D+s into φπ+ and K¯*0K+. From an analysis of these events we have determined the lifetimes for the D0, D+, and D+s to be 0.422+/-0.008+/-0.010, 1.090+/-0.030+/-0.025, and 0.47+/-0.04+/-0.02 psec, respectively.
- Publication:
-
Physical Review D
- Pub Date:
- May 1988
- DOI:
- 10.1103/PhysRevD.37.2391
- Bibcode:
- 1988PhRvD..37.2391R
- Keywords:
-
- 13.25.+m;
- 14.40.Jz