SEARCH FOR CHI-C2 PRODUCTION IN 2-PHOTON PROCESSES

被引：6

作者：

UEHARA, S

机构：

来源：

PHYSICS LETTERS B | 1991年 / 266卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90766-J

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search has been made for the production of a charmonium state chi-c2 in two-photon processes. We have used the decay channel chi-c2 --> gamma-J/chi, J/chi --> l + l-. No signal enhancement indicating the production of chi-c2 has been observed in the invariant mass distributions of the final state particles, and an upper limit for the two-photon decay width, GAMMA-gamma-gamma(chi-c2) < 4.2 keV at 95% CL, has been obtained.

引用

页码：188 / 192

页数：5

共 20 条

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