Spin correlations in production and decay of charginos
Spin correlations in production and decay of charginos
复制标题
电荷产生和衰变的自旋相关性
DOI：
10.1007/s100529800956
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
W. Majerotto
中科院分区：
文献类型：
--
作者：
G. Moortgat;H. Fraas;A. Bartl;W. Majerotto
我们研究了极化光束的电荷产生和随后的衰变，包括产生和衰变之间的完全自旋相关。给出了电荷的联合自旋密度矩阵、电荷衰变矩阵和产生与衰变联合过程的微分截面的解析公式。我们给出了用非极化光束产生较轻的电荷对和轻子衰变成最轻的中性子的数值结果。研究了四种典型场景下的轻子角分布和前后不对称性。
We study the production of charginoswith polarized beams and the subsequent decaysand, including the complete spin correlations between production and decay. Analytical formulae are presented for the joint spin-density matrix of the charginos, for the chargino decay matrix and for the differential cross section of the combined processes of production and decays. We present numerical results for pair production of the lighter chargino with unpolarized beams and the leptonic decay ofinto the lightest neutralino. The lepton angular distribution and the forward-backward asymmetry are studied in four representative scenarios forGeV andGeV.