论文标题
该过程的研究$ e^+e^ - \ to k_s^0 k^{\ pm}π^{\ mp}π^+π^ - $ in C.M. CMD-3检测器的能量范围1.6--2.0 GEV
Study of the process $e^+e^-\to K_S^0 K^{\pm}π^{\mp} π^+π^-$ in the C.M. energy range 1.6--2.0 GeV with the CMD-3 detector
论文作者
论文摘要
该过程的横截面$ e^+e^ - \ to k_s^0 k^{\ pm}π^{\ mp}π^+π^ - $首次使用185.4 pb $^{ - 1} $收集的cmd-3检测器在Veppp-teppp-2000 $ e e^$ e^$ e^+e^+e^+e^+e^$ e^-355.4 pb $^{ - 1} $的数据样本中进行了测量。使用$ k_s^0 \toπ^+π^ - $衰减检测，373 $ \ pm $ 20和514 $ \ pm $ \ pm $ 28 $ 28信号事件分别在六个和五个重建的轨道中，在质量中心能量范围1.6--2.0 GEV中。横截面的总系统不确定性约为15 \％。对生产动力学的研究使我们能够从$ e^+e^ - \到f_1（1285）π^+π^ - $中间状态并测量相应的横截面。已经观察到具有$ f_1（1420）$和$ f_1（1510）$共振的中级状态。
The cross section of the process $e^+e^- \to K_S^0 K^{\pm}π^{\mp}π^+π^-$ has been measured for the first time using a data sample of 185.4 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. With the $K_S^0\toπ^+π^-$ decay detection, 373$\pm$20 and 514$\pm$28 signal events have been selected with six and five reconstructed tracks, respectively, in the center-of-mass energy range 1.6--2.0 GeV. The total systematic uncertainty of the cross section is about 15\%. The study of the production dynamics allows us to extract contribution from the $e^+e^- \to f_1(1285)π^+π^-$ intermediate state and to measure the corresponding cross section. The intermediate states with the $f_1(1420)$ and $f_1(1510)$ resonances have been observed.
