Title

First observation of the decay c+0ee and an estimate of the c+ c0 lifetime ratio

Document Type

Article

Publication Date

1-1-1995

Abstract

Using the CLEO II detector at the Cornell Electron Storage Ring we have observed the decay modes c+0e+e and c0-e+e by the detection of a -positron pair of appropriate invariant mass. We find B(c+0e+e)(e+e-c+X)=1.550.330.25 pb, B(c0-e+e)(e+e-c0X)=0.630.120.10 pb, B(c+-++)/B(c+0e+e)=0.440.11-0.06+0.11, and B(c0-+)/B(c0-e+e)=0.320.10-0.03+0.05. Assuming the c+ and c0 are equally produced in e+e- annihilation events at 10 GeV, the lifetime ratio of c+/c0 is measured to be 2.460.70-0.23+0.33. © 1995 The American Physical Society.

Publication Name

Physical Review Letters

Volume Number

74

First Page

3113

Last Page

3117

Issue Number

16

DOI

10.1103/PhysRevLett.74.3113

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