English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We present a calculation of the branching ratio of orthopositronium decayinto an invisible mode, which is done in the context of Mirror World models,where ordinary positronium can disappear from our world due to oscillation intoits mirror twin. In this revision we clarify some formulas and approximationsused previously, correct them at some places, add new effects relevant for afeasible experiment and finally perform a combined analysis. We include intoconsideration various effects due to external magnetic and electric fields,collisions with cavity walls and scattering off gas atoms in the cavity.Oscillations of the Rydberg positroniums are also considered. To perform anumerical estimates in a realistic case we wrote computer code, which can beadopted in any experimental setup. Its work is illustrated with an example of aplanned positronium experiment within the AEgIS project.

Positronium oscillations to Mirror World revisited