I just found and answered this question on why some particles are defined with square roots in their expressions. It has a bunch of downvotes, but the comments doesn't seem to clarify the reason for this. Also, there doesn't seem to be any close votes at the moment I'm posting this question.
After showing the question to friends, I noticed people without a background in particle physics might not be familiar with the notation and hence the question might seem quite unclear. Is this what is going on?