标题： 由组成夸克模型预言的第四个P11共振态的证据 显示英文标题

标题： Evidence for the fourth P11 resonance predicted by the constituent quark model

摘要： 指出由构成夸克模型预测的五个低能P11态中的第三个可以与 Zagreb 研究组通过三通道分析得到的四个态中的第三个相匹配。 这是所谓的“缺失”共振之一，预测质量为1880 MeV。 Zagreb 研究组对 pi N -> eta N 数据的拟合是发现 P11 部分波中这个第四共振的关键因素。 显示英文摘要

摘要： It is pointed out that the third of five low-lying P11 states predicted by a constituent quark model can be identified with the third of four states in a solution from a three-channel analysis by the Zagreb group. This is one of the so-called ``missing'' resonances, predicted at 1880 MeV. The fit of the Zagreb group to the pi N -> eta N data is the crucial element in finding this fourth resonance in the P11 partial wave.