Measurement of Natural Widths of Sigma-c-0 and Sigma-c-++ Baryons

Details Measurement of Natural Widths of Sigma-c-0 and Sigma-c-++ Baryons Measurement of Natural Widths of Sigma-c-0 and Sigma-c-++ Baryons

2001-11-08

arxiv.org/abs/hep-ex/0111027v2

Phys.Lett.B525:205-210,2002

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted to Physics Letters B

Scientific paper

10.1016/S0370-2693(01)01444-7

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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