King plot non-linearity exclusion plot

[BillKet]

Hello I have a questions about the exclusions plots in the paper using King plot nonlinearities (for example Fig. 1 in this paper, but it's basically the same plot in all papers). Why is there a lower limit for the mass of the boson, usually around 1-10 eV? There are many theories predicting smaller masses (and experiments searching for them), such as axions, and I assume that "5th force" exclusion plot doesn't exclude all of them (otherwise there will be no such experiments), especially that the assumption of a Yukawa potential is extremely general (i.e. basically model independent). So should I assume that the exclusion plot actually continues as a horizontal line to the left? Does it go up again at a point? And in general, why do they stop there? Thank you!

 

[eljose79]

Hello,

Thank you for your question about the exclusion plots in papers using King plot nonlinearities. The lower limit for the mass of the boson, usually around 1-10 eV, is based on the current state of our understanding of particle physics and the limitations of our experimental capabilities. This lower limit is not set in stone and can change as our knowledge and technology advances.

The exclusion plots in these papers are based on the assumption of a Yukawa potential, which is a general model for the interaction between particles. However, this model is not the only possible explanation for the behavior of particles, and there may be other theories that predict smaller masses for bosons. These theories may not be excluded by the exclusion plots, but they are not currently supported by experimental evidence.

The reason why the exclusion plots stop at a certain point is because our current experimental capabilities are limited. We are constantly pushing the boundaries of our technology and knowledge, but there is still a limit to what we can observe and measure. it is important to keep an open mind and continue to explore and test new theories and possibilities.

In summary, the exclusion plots in papers using King plot nonlinearities are based on our current understanding and experimental capabilities. They may not exclude all possible theories and predictions, but they are a representation of our current knowledge and limitations. I hope this helps to answer your questions. Thank you for your interest in our research.