Spin dependent fragmentation functions at belle
Spin dependent fragmentation functions at belle
复制标题
Belle 的自旋相关碎片函数
DOI：
10.1063/1.2122194
复制
发表时间：
2005
影响因子：
5
通讯作者：
R. Seidl
中科院分区：
文献类型：
--
作者：
A. Ogawa;M. Perdekamp;R. Seidl;R. Seidl
在半包容DIS（SIDIS）或RHIC中pp碰撞的包容测量中，迄今未知的手性奇夸克横向自旋分布的测量在截面上出现了额外的手性奇碎片化函数。这种手性奇断裂函数（FF）可以是所谓的Collins FF或干涉FF。HERMES给出了这些FFs非零的第一个暗示，但是为了测量横向，我们需要精确地知道这些FFs。在KEK‐B工厂的Belle e+e−对撞机上，使用了29.0 fb−1的数据集来获得Collins函数。
The measurement of the so far unknown chiral‐odd quark transverse spin distribution in either semi‐inclusive DIS(SIDIS) or inclusive measurements in pp collisions at RHIC has an additional chiral‐odd fragmentation function appearing in the cross section. This chiral‐odd fragmentation functions (FF) can for example be the so‐called Collins FF or the Interference FF. HERMES has given a first hint that these FFs are nonzero, however in order to measure transversity one needs these FFs to be precisely known. At the Belle e+e− collider at the KEK‐B factory a data set of 29.0 fb−1 has been used to obtain the Collins function.