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Measurement of sigma(e+e- -->psi(3770)-->hadrons) at Ec.m.=3773 MeV |
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| Authors: | Besson D Pedlar T K Cronin-Hennessy D Gao K Y Gong D T Hietala J Kubota Y Klein T Lang B W Poling R Scott A W Smith A Dobbs S Metreveli Z Seth K K Tomaradze A Zweber P Ernst J Arms K Severini H Dytman S A Love W Mehrabyan S Mueller J A Savinov V Li Z Lopez A Mendez H Ramirez J Huang G S Miller D H Pavlunin V Sanghi B Shipsey I P J Adams G S Anderson M Cummings J P Danko I Napolitano J He Q Muramatsu H Park C S Thorndike E H Coan T E Gao Y S Liu F Artuso M Boulahouache C Blusk S Butt J Li J Menaa N Mountain R Nisar S Randrianarivony K Redjimi R Sia R Skwarnicki T Stone S Wang J C Zhang K |
| Affiliation: | University of Kansas, Lawrence, Kansas 66045, USA. |
| Abstract: | We measure the cross section for e+e- -->psi(3770) -->hadrons at Ec.m.=3773 MeV to be (6.38+/-0.08(+0.41)(-0.30) nb using the CLEO detector at the CESR e+e- collider. The difference between this and the e+e- -->psi(3770) -->DD cross section at the same energy is found to be (-0.01+/-0.08(+0.41)(-0.30) nb. With the observed total cross section, we extract Gamma(ee)(psi(3770))=(0.204+/-0.003(+0.041)(-0.027) keV. Uncertainties shown are statistical and systematic, respectively. |
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