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First Measurement of the D*+ Width

CLEO Collaboration·Mikhail Dubrovin
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Abstract

We have made the first measurement of the D*+ width using 9/fb of e+e- data collected near the Y4S 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*+ -> D0 pi+ decay. Our preliminary result is Gamma(D*+) = 96 +- 4 (Statistical) +- 22 (Systematic) keV.

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CLEO Collaboration, Mikhail Dubrovin. 2001-05-14. First Measurement of the D*+ Width. https://arxiv.org/abs/hep-ex/0105030

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