Title

Wave Function Correction to the Decay of Pionium and Heavy Fermionium

Abstract

The decay rates of heavy atomic systems consisting of a particle and its own antiparticle are influenced by the probability density ("charge density", square of the wave function) at the origin. In heavy systems, the one-loop electronic vacuum polarization induces a correction to the charge density (at the origin) of relative order α/π. The correction is analyzed in this Letter, and results are provided for dimuonium (μ+μ,- atom), pionium (π+π- atom), and the hypothetical heavy tauonium (τ+τ- atom). We investigate the correction in the limit of strong binding and discuss the applicability of the effective charge approach to derive leading logarithmic asymptotics.

Department(s)

Physics

Keywords and Phrases

Exotic Atoms; Heavy Fermionium; Mesoatoms; Pionium; Radiative Corrections

International Standard Serial Number (ISSN)

0375-9601

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1998 Elsevier, All rights reserved.

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