An arxiv search for “4/3" in the abstract field, for the years 2015 - 2023 on April 24, 2023 yields 1275 articles. Some refer to a 4/3 exponent. The articles likely cover a wide range of physics.
Evidence of a 4/3 universal scaling law is discussed in an RG article,
Preprint From Galileo’s simple case to universal 4/3 scaling
posted April 24, 2023,
Do any of the arxiv articles contain 4/3 scaling of the same type as in the 4/3 scaling law article? If you are expert in the subject matter of one of the arxiv articles, can you say?