File(s) not publicly available
The three photon vertex
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.
History
Publication title
Journal of Physics G: Nuclear and Particle PhysicsIssue
11Pagination
787-794ISSN
0954-3899Department/School
School of Natural SciencesPublisher
Iop Publishing LtdPlace of publication
Dirac House, Temple Back, Bristol, England, Bs1 6BeRepository Status
- Restricted