Princípio de Conservação de energia e a descoberta do neutrino: uma análise lakatosiana

This paper describle about the discovery and development of the concept of the particle named "neutrino", using the perspective of the philosophy of science of Imre Lakatos. With this focus, we making a historiographical and epistemological analysis of scientific practice, which culminated in its formulation, as well as subsequent developments. In this sense, the work makes a rational reconstruction regarding the research program that the formulation and discovery of the neutrino participates in, as well as the principle of conservation of energy that can be understood as a fundamental part of the methodological assumptions of such program.