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arXiv 0708.3291hep-ph
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大$N_c$ QCD与夸克模型中奇异重子的质量公式

Mass formula for strange baryons in large $N_c$ QCD versus quark model

C. Semay, F. Buisseret, F. Stancu

摘要:

将先前建立的具有相对论运动学和$Y$禁闭加一个胶子交换的夸克模型与$1/N_c$展开质量公式之间的联系推广到奇异重子。这两种方法预测的SU(3)-破缺质量项的值是很好的协议彼此。奇异重子和非奇异重子表现出Regge轨迹具有相同的斜率,但截距取决于奇异性。这两种方法都同意的斜率和截距的值和存在一个单一的良好的量子数标记重子在一个给定的雷吉轨迹。

英文摘要:

A previous work establishing a connection between a quark model, with relativistic kinematics and a $Y$-confinement plus one gluon exchange, and the $1/N_c$ expansion mass formula is extended to strange baryons. Both methods predict values for the SU(3)-breaking mass terms which are in good agreement with each other. Strange and nonstrange baryons are shown to exhibit Regge trajectories with an equal slope, but with an intercept depending on the strangeness. Both approaches agree on the value of the slope and of the intercept and on the existence of a single good quantum number labeling the baryons within a given Regge trajectory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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