This is a consequence of the required resources for the experiments. If it takes a ten billion dollar piece of equipment to produce your results then chances a

This is a consequence of the required resources for the experiments. If it takes a ten billion dollar piece of equipment to produce your results then chances are you are going to be one little cog in a very big machine. There are not papers with 500 co-authors in any other field or even in sub-fields of particle physics that do not require massive accelerators to achieve results.