This is tremendously interesting. In particular their suggestion that one solution to the conundrum is the existence of additional very light force carriers.
Perhaps a more up to date particle physicist than I can chip in bu such particles must presumably be outside of the Standard Model (as iirc from my particle physics, which is admittedly getting on for 20 years ago, there ain't any more slots left). I know there are some interesting new theories which are very widely disputed and which have a lot of other problems, such as the Exceptionally Simple Theory, which predict a whole host of additional particles - but there are reasons such things are on the fringe right now.
With all the progress in the last couple of decades, and all these new results pointing to new Physics in all kinds of areas, it's a fascinating time for the field - and makes one wonder where we'd be if the entire faculty hadn't dedicated decades down the String theory rabbit hole.
Perhaps a more up to date particle physicist than I can chip in bu such particles must presumably be outside of the Standard Model (as iirc from my particle physics, which is admittedly getting on for 20 years ago, there ain't any more slots left). I know there are some interesting new theories which are very widely disputed and which have a lot of other problems, such as the Exceptionally Simple Theory, which predict a whole host of additional particles - but there are reasons such things are on the fringe right now.
With all the progress in the last couple of decades, and all these new results pointing to new Physics in all kinds of areas, it's a fascinating time for the field - and makes one wonder where we'd be if the entire faculty hadn't dedicated decades down the String theory rabbit hole.