Search for the dark photon in π0 decays by the NA48/2 experiment at CERN

被引：0
|
作者：
Goudzovski, Evgueni [1 ]
机构：
[1] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
来源：
DARK MATTER, HADRON PHYSICS AND FUSION PHYSICS | 2015年 / 96卷
关键词：
D O I：
10.1051/epjconf/20159601017
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A sample of 4.687 x 10(6) fully reconstructed K-+/- -> pi(+/-)pi(0)(D), pi(0)(D) -> gamma e(+)e(-) decay candidates in the kinematic range m(ee) > 10 MeV/c(2) with a negligible background contamination collected by the NA48/2 experiment at CERN in 2003-04 is analysed to search for the dark photon (Lambda') via the decay chain K-+/- -> pi(+/-)pi(0), pi(0) -> gamma Lambda', A' -> e(+)e(-). No signal is observed, and preliminary exclusion limits on space of dark photon mass m(A)' and mixing parameter epsilon(2) are reported.
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页数：5
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