Field - induced axion decay a → e + e − via plasmon

Field - induced axion decay a → e + e − in KSVZ - model

The axion decay into electron-positron pair a → e + e − is studied in an external magnetic field in KSVZ-model where axions have only induced coupling to leptons. The axion lifetime in the field decreases with energy and field strength to seconds.

Field - induced axion decay a → e + e − in plasma

Axion Emission by Magnetic-Field Induced Conversion of Longitudinal Plasmons

Magnetic fields mix axions with photons, allowing for the cyclotron process e → ea by virtue of an intermediate plasmon even if axions do not couple to electrons at tree level. The axion and longitudinal-plasmon dispersion relations always cross for a certain wave-number, leading to a resonant enhancement of this process. Even then, however, it cannot quite compete with the usual nucleon proces...

2 v 1 2 3 Ja n 19 98 Yaroslavl State University Preprint YARU - HE - 98 / 01 hep - ph / 9801402 a → e + e − decay in a model with induced coupling to leptons

The process of electron-positron pair production by axion propagating in an external magnetic field is investigated in a model with only induced axion coupling to leptons. Contributions of the lowest and higher Landau levels are analyzed. The results we have obtained demonstrate a strong catalyzing influence of the field.

Field - induced axion emission via process e + e − → a in plasma