标题： 横矢信号在COMPASS中两个强子对的产生 显示英文标题

标题： Transversity Signal in two Hadron Pair Production in COMPASS

摘要： 在横向极化的靶上测量半包容深度非弹性散射（SIDIS）中的单自旋不对称性，有助于研究横向分布和横向动量依赖的分布函数。 在2002年、2003年和2004年，COMPASS使用了横向极化的氘核靶采集数据，并在2007年使用了质子靶。 已经分析了三种获取横向分布的通道。 涉及极化双介子干涉碎裂函数的介子对产生中的方位不对称性，涉及柯林斯碎裂函数的单介子产生中的方位不对称性，以及通过其自分析弱衰变测量自旋为${1/2} \hbar$的粒子，如$\Lambda$重子的极化。 以下我们将重点介绍基于质子靶测量的双介子对不对称性的最新初步结果。 显示英文摘要

摘要： Measuring single spin asymmetries in semi-inclusive deep-inelastic scattering (SIDIS) on a transversely polarized target gives a handle to investigate the transversity distribution and transverse momentum dependent distribution functions. In the years 2002, 2003 and 2004 COMPASS took data with a transversely polarized deuteron target and in the year 2007 with a proton target. Three channels for accessing transversity have been analysed. Azimuthal asymmetries in the production of hadron pairs, involving the polarized two hadron interference fragmentation function, azimuthal asymmetries in the production of single hadrons, involving the Collins fragmentation function and polarization measurements of spin-${1/2} \hbar$ particles like $\Lambda$-Hyperons via their self analyzing weak decay. In the following we will focus on new preliminary results from the analysis of two hadron pair asymmetries measured with the proton target.