What do you call the collection of accepted knowledge, theories, and investigate techinques of a given scientfic discipline?

Paradigm.

Explanation:

A scientific paradigm is known as a framework that contains every generally accepted view regarding a subject, established ways about where to drive research, and the way to perform it. Paradigms include all the distinct, fixed patterns, theories, and usual standard procedures that make it possible to identify the field to which a result belongs.