Recommended Books for Beginners in Particle Physics

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How can we theoretically predict half lives?
 
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It depends on the width of a resonance's peak...
If the width is [itex]Γ[/itex] then you can associate the resonance's lifetime by:
[itex]Γ=\frac{1}{t}[/itex]
So in general, to find the width you need to find the cross section as a function of energies... eg Breit Wigner cross section distribution...

In another way, you can calculate the time needed for a part of your particle to leave the potential via a tunneling - for example an alpha particle leaving a heavy nuclei in the potential of strong+coulomb interaction...
 
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Thanks for your reply. I am new to particle physics. Can you suggest any good book for a beginner?