论文标题
杜特隆的横向结构
The Transverse Structure of the Deuteron with Drell-Yan
论文作者
论文摘要
我们建议测量中子和杜特龙横向TMD。核子的夸克横向分布与$ q^2 $进化中的deuteron gluon横向分布，这是由于横向极化靶标的手性odd属性而导致的。 GLUON TRANTRESSITY TMD仅存在于大或等于1的靶标的靶标，并且不与Quark分布在前导扭转时混合，从而提供了特别干净的自由度探针。该实验将是同类的第一个实验，并将探测杜特隆的gluonic结构，研究与各个核子无关的细胞核中的外来胶水贡献。该实验可以用最近组装的SpinQuest极化目标进行实验E1039，并且在NM4中已经有了光谱仪。这种新的实验设置将需要对目标系统进行非常最小的修改，并且对检测器套件无需修改。需要额外的RF电路和靶线圈，以在Larmor频率的整个域进行RF模块以操纵固态目标自旋种群密度。需要使用这种新颖的目标系统的专用光束时间才能实现我们的物理目标。
We propose to measure neutron and deuteron transversity TMDs. The quark transversity distributions of the nucleon are decoupled from the deuteron gluon transversity in the $Q^2$ evolution due to the chiral-odd property in the transversely-polarized target. The gluon transversity TMD only exists for targets of spin greater or equal to 1 and does not mix with quark distributions at leading twist, thereby providing a particularly clean probe of gluonic degrees of freedom. This experiment would be the first of its kind and would probe the gluonic structure of the deuteron, investigating exotic glue contributions in the nucleus not associated with individual nucleons. This experiment can be performed with the SpinQuest polarized target recently assembled for experiment E1039 and the spectrometer already in place in NM4. This new experimental setup would require very minimal modification to the target system and no modification to the detector package. An additional RF-circuit and target coil are necessary to RF-modulate across the domain of the Larmor frequency to manipulate the solid-state target spin population densities. Dedicated beam-time with this novel target system is required to achieve our physics goals.
