Plenty of things get discovered all over the world and this isn't a particularly earth shattering result. Discovering evidence of a particle predicted for 50 years is interesting but still pretty mundane.
The LHC which is doing much of the particle physics discovery is in Switzerland and France, if you need to be reminded, not the US.
The first strong force theory was published by Hideki Yukawa in Japan in 1935 (which won him the nobel prize) ... so uh, not exactly a sputnik problem.
Sputnik problems (and the nuclear race) are engineering and industrial races, not fundamental physics ones.
> The LHC which is doing much of the particle physics discovery is in Switzerland and France, if you need to be reminded, not the US.
Which is ironically an example of particle collider science happening overseas primarily because the US relinquished its lead on scientific discovery, despite having a similar-scale particle collider practically finished and ready to go [0].
[0]: https://en.wikipedia.org/wiki/Superconducting_Super_Collider