标题： 八重态重子生成中的质量抑制 显示英文标题

标题： Mass Suppression in Octet Baryon Production

摘要： 在 $e^+ e ^-$ 粒子湮灭中，八重态重子的截面随着生成强子的质量增加而显著抑制。 我们提出了一种简单的碎片化函数参数化方法，其指导输入模型有两个：SU(3)味对称性部分由夸克-二夸克模型给出，而重子质量抑制部分受到弦模型的启发。 我们需要 {\it 八} 个自由参数来描述所有八重态重子的碎片化函数。 这些自由参数通过拟合 $e^+ e ^-$ 湮灭中八重态重子产生的实验数据来确定。 然后我们将获得的碎片化函数应用于预测带电轻子深度非弹性散射中八重态重子的截面，并发现与现有实验数据一致。 此外，建议在 $pp$ 碰撞中产生重子是检验预测质量抑制的理想领域。 显示英文摘要

摘要： There is a striking suppression of the cross section for production of octet baryons in $e^+ e ^-$ annihilation, as the mass of the produced hadron increases. We present a simple parametrization for the fragmentation functions into octet baryons guided by two input models: the SU(3) flavor symmetry part is given by a quark-diquark model, and the baryon mass suppression part is inspired by the string model. We need {\it eight} free parameters to describe the fragmentation functions for all octet baryons. These free parameters are determined by a fit to the experimental data of octet baryon production in $e^+ e ^-$ annihilation. Then we apply the obtained fragmentation functions to predict the cross section of the octet baryon production in charged lepton DIS and find consistency with the available experimental data. Furthermore, baryon production in $pp$ collisions is suggested to be an ideal domain to check the predicted mass suppression.