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First measurement of gamma(D*(+)).
First measurement of gamma(D*(+)).
- Source :
-
Physical review letters [Phys Rev Lett] 2001 Dec 17; Vol. 87 (25), pp. 251801. Date of Electronic Publication: 2001 Nov 28. - Publication Year :
- 2001
-
Abstract
- We present the first measurement of the D*(+) width using 9/fb of e(+)e(-) data collected near the Upsilon(4S) resonance by the CLEO II.V detector. Our method uses advanced tracking techniques and a reconstruction method that takes advantage of the small vertical size of the Cornell Electron-positron Storage Ring beam spot to measure the energy release distribution from the D*(+)-->D(0)pi(+) decay. We find gamma(D*(+)) = 96+/-4 (stat)+/-22 (syst) keV. We also measure the energy release in the decay and compute Delta m identical with m(D*(+))-m(D(0)) = 145.412+/-0.002 (stat)+/-0.012 (syst) MeV/c(2).
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 87
- Issue :
- 25
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 11736560
- Full Text :
- https://doi.org/10.1103/PhysRevLett.87.251801