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Дата изменения: Wed Aug 23 11:50:15 2000
Дата индексирования: Tue Oct 2 01:57:52 2012
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Compton diagrams

A. Diagrams of Compton scatering.

The first diagram describes absorption of the incoming photon by the electron followed by emission of the final photon. The second diagram corresponds to the process in which the electron emits the final photon before absorbing the incoming photon. These diagrams are also called s-channel diagram, and u-channel diagram, according to the propagator momentum. They present two contributions to amplitude of reaction A=Ms+Mu.

B. Squared diagrams of Compton scatering

The squared amplitude is |A|* = (Ms+Mu)*(Ms+Mu)* = |Ms|2 +2Re(Ms*Mu) + |Mu|2. Three squared diagrams presented above correspond to three terms of this expression.