POSITRONIUM LIFETIME CALCULATION

被引：5
作者：
PIVOVAROV, AA [1 ]
机构：
[1] INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
来源：
PHYSICAL REVIEW D | 1993年 / 47卷 / 11期
关键词：
D O I：
10.1103/PhysRevD.47.5183
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A new approach to a positronium lifetime calculation is proposed. The method is completely relativistic and gauge invariant. The full positronium width is determined through several parameters connected with a dynamics of forming the bound state. These parameters play the same role as structure functions in the case of inclusive deep-inelastic lepton-hadron scattering or the pion decay constant f(pi) for strong interactions. They should be calculated using a nonperturbative model of the bound state. The explicit calculations of (para)positronium lifetime to one-loop order in a are presented.
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收藏
页码：5183 / 5186
页数：4
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