PI(0)-]E(+)E(-) AND ETA-]MU(+)MU(-) DECAYS REEXAMINED

被引：39

作者：

AMETLLER, L

BRAMON, A

MASSO, E

机构：

[1] UNIV AUTONOMA BARCELONA,FIS TEOR GRP,E-08193 BARCELONA,SPAIN

[2] UNIV AUTONOMA BARCELONA,INST FIS ALTES ENERGIES,E-08193 BARCELONA,SPAIN

来源：

PHYSICAL REVIEW D | 1993年 / 48卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.48.3388

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The rare pi0 --> e+e- and eta --> mu+mu- decays are calculated in different schemes, which are seen to be essentially equivalent to and produce the same results as conventional vector-meson dominance. We obtain the theoretical predictions B(pi0 --> e+e-) = (6.41 +/- 0.19) x 10(-8) and B(eta --> mu+mu-) = (1.14(-0.03)+0.07) x 10(-5), where B(P --> l+l-) = GAMMA(P --> l+l-)/GAMMA(P --> gammagamma), in reasonable agreement with recent experimental data.

引用

页码：3388 / 3391

页数：4

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