文章基本信息

标题：A first prediction of the electromagnetic rare decays η′ → π°γγ and η′ → ηγγ
本地全文：下载
作者：R. Escribano
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2012
卷号：2012
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The branching ratio of the electromagnetic rare decays h ! p0gg and h0 ! (p0;h)gg are analysed in terms of scalar and vector meson exchange contributions using the frameworks of the Linear Sigma Model and Vector Meson Dominance, respectively. The measured h !p0gg process serves as a test of our approach while the non yet measured h0 ! (p0;h)gg reactions are predicted for the first time. Our prediction for the h !p0gg decay agrees with recent experimental reported values, thus supporting the validity of our framework. Therefore, our predictions for the h0 !p0gg and h0 !hgg decays should be taken as a first indication of the possible values of the associated branching ratios. We hope these predictions to be interesting and useful for experiments such as KLOE-2, Crystal Ball, WASA, and BES-III where these processes are expected to be measured in the next future.