# Search for the decay <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>η</mml:mi><mml:mo>′</mml:mo></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi><mml:mi>η</mml:mi></mml:math>

> Research article (Physical review. D/Physical review. D., 2019) · cited 10× · AI/ML

**Wikidata**: [openalex:W2982640235](https://www.wikidata.org/wiki/openalex:W2982640235)  
**Source**: https://4ort.xyz/entity/search-for-the-decay-mml-math-xmlns-mml-http-www-w3-org-1998-math-mathml-display-inline-mml-msup-mml-mi-mml-mi-mml-mo-mm