标题： 由组成夸克模型预言的第四P11共振的证据 显示英文标题

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

摘要： 指出由组成夸克模型预测的五个低能P11态中的第三个可以与札尔布小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。 札尔布小组对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.