QMC模型中的极化EMC效应
Polarized EMC Effect in the QMC Model
摘要：
使用MIT袋模型的自由的情况下，随着QMC模型，以纳入在介质中的修改的结构功能的非极化和极化的情况下，在介质中的自由核子结构功能的比率。正如在前面的工作中所讨论的，所观察到的核EMC效应得到了合理的描述。这使我们有信心调查的极化EMC效应的模型，结合质子的比率$g_1^*(x)/g_1(x)$的自由质子的预测。这个比率被发现是从一个基本上不同的和非常相似的形状和大小，发现在非极化的情况下。对束缚核子价结构发生如此根本性变化的预测需要尽早进行实验验证。
英文摘要：
The ratios of the in-medium to free nucleon structure functions for the unpolarized and polarized cases are obtained using the MIT bag model for the free case, along with the QMC model to incorporate the in-medium modifications of the structure functions. As discussed in earlier work, the observed nuclear EMC effect is reasonably well described. This gives us confidence to investigate the predictions of the model for the polarized EMC effect, the ratio $g_1^*(x)/g_1(x)$ for a bound proton to that of a free proton. This ratio is found to be substantially different from unity and very similar in shape and size to that found in the unpolarized case. This prediction of such a fundamental change in the valence structure of a bound nucleon needs to be tested experimentally at the earliest opportunity.
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