Precision study of $ZZgamma$ production including Z-boson leptonic decays at the ILC
Precision study of $ZZgamma$ production including Z-boson leptonic decays at the ILC
复制标题
ILC 中 ZZ 伽马产生（包括 Z 玻色子轻子衰变）的精确研究
DOI：
10.1140/epjc/s10052-016-3919-x
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发表时间：
2016
影响因子：
4.4
通讯作者：
Chong Chen
中科院分区：
文献类型：
--
作者：
Yu Zhang;Peng-Fei Duan;Wen-Gan Ma;Ren-You Zhang;Chong Chen
我们报道了在标准模型(SM)中对这个过程的精确预测，其中包括ILC上的轻子衰变。计算包括了完整的NLO、EW修正和高阶初态辐射(h.o.ISR)贡献。我们发现，NLO EW修正严重抑制了LO截面，h.o.ISR效应在阈值附近非常显著，而在高能区变得很小。给出了LO和NLO EW+h.O.ISR修正的末态玻色子和光子的横向动量分布以及-对不变质量，并研究了相应的NLO EW和h.O.ISR相对修正。我们还采用了考虑自旋关联效应的{sc MadSpin}方法研究了末态玻色子对的轻子衰变。我们的结论是，h.o.ISR效应和NLO EW校正在探索ILC的生产中都是重要的。
We report on the precision predictions for theprocess including-boson leptonic decays at the ILC in the standard model (SM). The calculation includes the full next-to-leading (NLO) electroweak (EW) corrections and high order initial state radiation (h.o.ISR) contributions. We find that the NLO EW corrections heavily suppress the LO cross section, and the h.o.ISR effects are notable near the threshold while become small in high energy region. We present the LO and the NLO EW+h.o.ISR corrected distributions of the transverse momenta of final-boson and photon as well as the-pair invariant mass, and investigate the corresponding NLO EW and h.o.ISR relative corrections. We also study the leptonic decays of the final-boson pair by adopting the {\sc MadSpin} method where the spin correlation effect is involved. We conclude that both the h.o.ISR effects and the NLO EW corrections are important in exploring theproduction at the ILC.