One of the main challenges in nuclear and particle physics has been to understand how the proton's spin is built up from its quark and gluon constituents. This book gives an overview of the status of the field. It emphasises on the main physical ideas and the interpretation of spin data.

One of the main challenges in nuclear and particle physics has been to understand how the proton's spin is built up from its quark and gluon constituents. This book gives an overview of the status of the field. It emphasises on the main physical ideas and the interpretation of spin data.