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The three photon vertex


Delbourgo, R, The three photon vertex, Journal of Physics G: Nuclear and Particle Physics, 2, (11) pp. 787-794. ISSN 0954-3899 (1976) [Refereed Article]

DOI: doi:10.1088/0305-4616/2/11/003


Owing to weak interactions, the three-photon vertex is non-zero. From gauge invariance and symmetry requirements, it is shown that the C=-1P=-1 vertex amplitudes are at least of order q7 in the limit of soft photon momentum q and that if any two photons are placed on mass shell the form factors vanish identically. To lowest order in q the effective current is in fact given by jrho =b epsilon kappa lambda mu nu ( delta 2(Fkappa lambda delta rho Fmu nu )- delta rho (Fkappa lambda delta 2Fmu nu )). b is estimated in certain models of weak interactions.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Particle and high energy physics
Research Field:Particle physics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Delbourgo, R (Professor Robert Delbourgo)
ID Code:96814
Year Published:1976
Web of Science® Times Cited:1
Deposited By:Mathematics and Physics
Deposited On:2014-11-21
Last Modified:2014-11-21

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