标题： 重子数不守恒与奇异物质的稳定性 显示英文标题

标题： Baryon-Number Nonconservation and the Stability of Strange Matter

摘要： 如果重子数不守恒以有效六夸克算符的形式存在，并且同时使奇异性变化四个单位，那么它可能对奇异夸克物质的绝对稳定性产生巨大影响。 我们表明，在具有超势中$\lambda_{ijk} u_i^c d_j^c d_k^c$项的超对称标准模型中，这样的算符可以忽略不计，但在包含奇异粒子内容的模型中可能很重要。 从实验上对核稳定性下限为$10^{25}$年的限制出发，我们发现对奇异物质在这种衰变下的稳定性的模型无关下限约为$10^5$年。 显示英文摘要

摘要： If baryon-number nonconservation exists in the form of an effective six-quark operator which also changes strangeness by four units, it could have a tremendous impact on the absolute stability of strange quark matter. We show that such an operator is negligible in the supersymmetric standard model with $\lambda_{ijk} u_i^c d_j^c d_k^c$ terms in the superpotential, but may be of importance in models with exotic particle content. From the experimental lower limit of $10^{25}$ years on the stability of nuclei, we find a model-independent lower limit of the order $10^5$ years on the stability of strange matter against such decays.