A team of scientists in Hungary recently published a paper that hints at the existence of a previously unknown subatomic particle. The team first reported finding traces of the particle in 2016, and they now report more traces in a different experiment.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/thex17factor.jpg)
Source:
https://phys.org/news/2019-12-x17-factor-particle-physics-dark.html