标题： 极化分布的定性方面在激发重强子产生中的应用 显示英文标题

标题： Qualitative Aspects of Polarization Distributions In Excited Heavy Hadron Productions

摘要： 在通量管模型的背景下，重夸克碎片化是通过通量管的断裂并产生一个(反)(反)夸克对来实现的。 发现产生的(反)(反)夸克更可能处于$L_z=0$状态。 这自然导致了$w_{3/2}$和$\tilde w_1$的极化分布参数分别对于$(D_1, D_2^*)$和$(\Lambda_{c1}, \Lambda_{c1}^*)$的产生被抑制。 然而，对应于$(\Sigma_c, \Sigma_c^*)$产生的参数$w_1$并未被抑制，这与CLEO的结果一致，但与DELPHI的结果不一致。 对$\Lambda_Q$极化测量的含义进行了讨论。 显示英文摘要

摘要： Within the context of flux tube models, heavy quark fragmentation takes place through the breaking of flux tubes with the production of a (di)quark-anti(di)quark pair. It is found that the (di)quark produced are more likely to be found in an $L_z=0$ state. This naturally leads to an supression of the polarization distribution parameters $w_{3/2}$ and $\tilde w_1$ for $(D_1, D_2^*)$ and $(\Lambda_{c1}, \Lambda_{c1}^*)$ production respectively. The corresponding parameter $w_1$ for $(\Sigma_c, \Sigma_c^*)$ production, however, is not suppressed, in agreement with the CLEO results but not the DELPHI one. Implications on the measurements of $\Lambda_Q$ polarizations are discussed.