ABSTRACT
In Ch. 1, we mentioned names of various leptons and hadrons. Some of the leptons appeared in our discussion of Ch. 5. In Ch. 8, some hadrons started making their importance felt. At this point, let us make an experimental interlude and ask ourselves how these particles were discovered. Of course we cannot perform an experiment on the pages of a book. We will do something that is next best: explain the principles that go behind the discovery of particles. As can be guessed, not all particles are discovered the same way. Here, we will outline some basic techniques only. Specifics for individual particles may be discussed in the later chapters as and when they are needed.
