6533b862fe1ef96bd12c62cc
RESEARCH PRODUCT
Standard model higher order corrections to the WW gamma/WWZ vertex
Joannis Papavassiliousubject
PhysicsGauge bosonParticle physicsUnitarityHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyFísica020206 networking & telecommunications02 engineering and technologyVertex (geometry)High Energy Physics - PhenomenologyQuadrupole0202 electrical engineering electronic engineering information engineeringPinch020201 artificial intelligence & image processingMagnetic dipoledescription
Using the S--matrix pinch technique we obtain to one loop order gauge independent $\gamma W^-W^+$ and $Z W^-W^+$ vertices in the context of the standard model, with all incoming momenta off--shell. We show that the vertices so constructed satisfy simple QED--like Ward identities. These gauge invariant vertices give rise to expressions for the magnetic dipole and electric quadrupole form factors of the $W$ gauge boson, which, unlike previous treatments, satisfy the crucial properties of infrared finiteness and perturbative unitarity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-04-24 |