Origin of single transverse-spin asymmetries in high-energy collisions
Origin of single transverse-spin asymmetries in high-energy collisions
复制标题
DOI：
10.1103/physrevd.102.054002
复制
发表时间：
2020-02
影响因子：
5
通讯作者：
Justin Cammarota;L. Gamberg;Z. Kang;Joshua A. Miller;D. Pitonyak;A. Prokudin;T. Rogers;N. Sato
中科院分区：
文献类型：
--
作者：
Justin Cammarota;L. Gamberg;Z. Kang;Joshua A. Miller;D. Pitonyak;A. Prokudin;T. Rogers;N. Sato
在这封信中，我们提出，第一次，一个唯象分析，证明单横自旋不对称性在高能碰撞有一个共同的起源。我们进行了第一次全球拟合的数据，从半包容深非弹性散射，Drell-Yan，$e^+e^-$湮灭成强子对，质子-质子碰撞。因此，我们能够提取一组通用的非微扰函数来描述这些反应中观察到的不对称性。在核子的上夸克张量荷和下夸克张量荷方面，我们首次获得了与格点一致的唯象结果。
In this letter, we present, for the first time, a phenomenological analysis that demonstrates single transverse-spin asymmetries in high-energy collisions have a common origin. We perform the first global fit of data from semi-inclusive deep inelastic scattering, Drell-Yan, $e^+e^-$ annihilation into hadron pairs, and proton-proton collisions. Consequently, we are able to extract a universal set of non-perturbative functions that describes the observed asymmetries in these reactions. Furthermore, we achieve the first phenomenological agreement with lattice on the up and down quark tensor charges of the nucleon.