FOCUS Document 741-v1

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Measurement of natural widths of Sigma_c^0 and Sigma_c^++ baryons

Document #:
FOCUS-doc-741-v1
Document type:
Publication
Submitted by:
Jonathan A. Pellish
Updated by:
Jonathan A. Pellish
Document Created:
08 Nov 2001, 00:00
Contents Revised:
08 Nov 2001, 00:00
Metadata Revised:
08 Nov 2001, 23:40
Actually Revised:
23 Aug 2005, 23:39
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Abstract:
In this paper we present a measurement of the natural widths of $\Sigma_c^0$ and $\Sigma_c^{++}$. Using data from the FOCUS experiment, we find $\Gamma(\Sigma_c^0) = 1.55 +0.41/-0.37 \pm 0.38$ MeV/c^2 and $\Gamma(\Sigma_c^0) = 2.05 +0.41/-0.38 \pm 0.38$ MeV/c^2. The first errors are statistical, the second systematic. These results are obtained with a sample of 913 $\Sigma_c^0 \to \Lambda_c^+ \pi^-$ decays and 1110 $\Sigma_c^++ \to \Lambda_c^+ \pi^+$ decays. These results are compared with recent theoretical predictions. PACS numbers: 14.20.Lq 13.30Eg.
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Journal References:
Published in Phys. Lett. B vol. 525 pg. 205.
Published in hep-ex/0111027.
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