- #1
ercagpince
- 30
- 0
[SOLVED] feynman rules
Hi , It is a simple question from the book of david j .griffiths :"introduction to elementary particles" (6.11)
(a) Is A--->B+B a possible process in the ABC theory (feynman rules for a toy theory)
(b)Suppose a diagram has nA external A lines , nB external B lines and nC external C lines. Develop a simple criterion for determining whether it is an allowed reaction .
(a)I presume that if A is heavier than both B particles it should be a legitimate process .
I am not sure whether there is any extra information needed for this question.
(b)It is related to (a) , so I am certainly missing something .
Hi , It is a simple question from the book of david j .griffiths :"introduction to elementary particles" (6.11)
Homework Statement
(a) Is A--->B+B a possible process in the ABC theory (feynman rules for a toy theory)
(b)Suppose a diagram has nA external A lines , nB external B lines and nC external C lines. Develop a simple criterion for determining whether it is an allowed reaction .
Homework Equations
The Attempt at a Solution
(a)I presume that if A is heavier than both B particles it should be a legitimate process .
I am not sure whether there is any extra information needed for this question.
(b)It is related to (a) , so I am certainly missing something .