We propose a Research and Training Network (RTN) to explore one of the 
most fundamental questions in modern science, the origin of mass of the 
elementary particles. The RTN will draw together worldwide expertise from 
several key areas in Particle Physics in order to exploit optimally the 
physics potential of the ATLAS detector at the Large Hadron Collider of 
CERN, which will start operations in summer 2007 and is expected to 
provide data that will shed light to the above question.

At the same time, the RTN will form a strong platform for training young 
European researchers and for promoting them to the frontline of this high 
profile research area. The strong links between the RTN institutes will 
allow the young researchers to get in close contact with experts in 
several different research topics, and hence will provide them with an 
all-around thorough training in key experimental and theoretical aspects 
of particle physics, as well as with a wide range of general transferable 
skills. This will enable them to take up a leading role in shaping the 
future of European Science in the decades to come.
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