# Pair production - which theory does it belong to

1. Jan 13, 2013

### 71GA

I am wondering in which theory pair productioon is described? Is it field theory, particle physics or quantum physics? I am sorry for such a basic question, but i need this info to find some books which will explain pair production mathematically and not by waving hands... (like allover the web)

Thank you.

2. Jan 13, 2013

### Staff: Mentor

Quantum field theory
This is a field theory, it is a quantum theory, and (nearly?) all calculations in particle physics use quantum field theory.

3. Jan 13, 2013

### 71GA

Would you recomend any books for pair production?

4. Jan 13, 2013

### Staff: Mentor

It would depend on how deeply you want to get into it. Judging by the work you did and the questions you were asking in this thread, you'll get a long ways just by knowing two things:
1) Pair production obeys all the conservation laws.
2) The relativistic energy-momentum relationship: $E^2 = (pc)^2 + (mc^2)^2$

5. Jan 13, 2013

### haael

Actually this is so called scattering theory. This is indeed a subdivision of QFT.

6. Jan 13, 2013

### 71GA

Could you write down in my other topic, how i could use this equation? To achieve same $h \nu$ which i get by conservation of energy and conservation of momentum.