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, Csorna S E, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Briere R A, Chen G P, Chen J, Ferguson T, Tatishvili G, Vogel H, Watkins M E, Rosner J L, Adam N E, Alexander J P, Berkelman K, Cassel D G, Duboscq J E, Ecklund K M, Ehrlich R, Fields L, Gibbons L, Gray R, Gray S W, Hartill D L, Heltsley B K, Hertz D, Jones C D, Kandaswamy J, Kreinick D L, Kuznetsov V E, Mahlke-Krüger H, Meyer T O, Onyisi P U E, Patterson J R, Peterson D, Phillips E A, Pivarski J, Riley D, Ryd A, Sadoff A J, Schwarthoff H, Shi X, Stroiney S, Sun W M, Wilksen T, Weinberger M, Athar S B, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein B I, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, White E J, Wiss J, Shepherd M R, Asner D M, Edwards K W
University of Kansas, Lawrence, Kansas 66045, USA.
Phys Rev Lett. 2006 Mar 10;96(9):092002. doi: 10.1103/PhysRevLett.96.092002. Epub 2006 Mar 8.
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.
我们使用CESR正负电子对撞机上的CLEO探测器，测量了质心能量(E_{c.m.}=3773)MeV时(e^+e^-\to\psi(3770)\to强子)的截面为((6.38\pm0.08(+0.41)(-0.30))nb。发现该截面与相同能量下(e^+e^-\to\psi(3770)\to DD)截面的差值为((-0.01\pm0.08(+0.41)(-0.30))nb。利用观测到的总截面，我们得出(\Gamma_{ee}(\psi(3770))=(0.204\pm0.003(+0.041)(-0.027))keV。所示不确定性分别为统计不确定性和系统不确定性。
