Particle Physics HW 8 Quiz                 Name__________________ 

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Particle Physics HW 8 Quiz Name__________________ You can try both problems below, but you will only receive credit for the most correct solution. 1. Consider the process →
. Obtain an expression for the contribution to for any one of the fourth order realizations of this process. Your final expression can be in terms of spinor sandwhiches. Note: There are a lot of possibilities and for a couple of choices you will not have the tools to evaluate it, but for most you should be able to use the results from your HW. Part of this question is to get you to identify what you can and cannot do. Turn over for second problem!! 2) Show that the orthonormality and completeness relations for spinors imply that they satisfy the momentum‐space Dirac equation, e.g. 0. 
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