2born (2born) wrote,

Распад позитрония

Шикарнейший учебный расчет от Зураба Силагадзе:

Two-photon decay of P-wave positronium: a tutorial: https://arxiv.org/abs/1812.00152

Abhijit Sen, Zurab K. Silagadze

A detailed exposition of two-photon decays of P-wave positronium is given to fill an existing gap in the pedagogical literature. Annihilation decay rates of P-wave positronium are negligible compared to the rates of radiative electric dipole transitions to the ground state. This circumstance makes such decays experimentally inaccessible. However the situation is different for quarkonium and the experimental and theoretical research of two-photon and two-gluon decays of P-wave quarkonia is a still flourishing field.

Comments: 12 pages, 1 figure, to be published in Can. J. Phys
Tags: Мегаучебник или Что я читал и похвалил, наука, разгребая arXiv'ы

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