期刊
PHYSICS OF PARTICLES AND NUCLEI
卷 40, 期 3, 页码 307-352出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063779609030034
关键词
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资金
- Grant Agency of the Czech Republic [202/01/0779, 202/04/0793, 202/07/0079]
The formalism allowing one to account for the effect of a finite space-time extent of particle production region is given. Its applications to the lifetime measurement of hadronic atoms produced by a high-energy beam in a thin target, as well as to the femtoscopy techniques widely used to measure space-time characteristics of the production processes, are discussed. Particularly, it is found that the neglect of the finite-size effect on the pionium lifetime measurement in the experiment DIRAC at CERN could lead to the lifetime overestimation comparable with the 10% statistical error. The theoretical systematic errors arising in the calculation of the finite-size effect due to the neglect of non-equal emission times in the pair center-of-mass system, the space-time coherence and the residual charge are shown to be negligible.
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