Published February 1, 2002 | Version v1
Journal article

First measurement of Γ(D*+) and precision measurement of mD*+-mD0

Description

We present the first measurement of the D*+ width using 9/fb of e+e- data collected near the Υ(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 CESR beam spot to measure the energy release distribution from the D*+→D0π+ decay. We find Γ(D*+)=96±4 (statistical)±22 (systematic) keV. We also measure the energy release in the decay and compute Δm≡mD*+-mD0=145.412±0.002 (statistical)±0.012 (systematic) MeV/c2

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
65
Journal Issue
3
Journal Page Range
p. 032003-032003.11
ISSN
0556-2821
CODEN
PRVDAQ

Optional Information

Notes
(c) 2002 The American Physical Society
Collaborations
CLEO Collaboration