Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-01-06
Phys.Rev.D81:073006,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 1 figure. Extended discussion, main equations rewritten to exhibit limiting behavior. Results for K* meson added. Ac
Scientific paper
10.1103/PhysRevD.81.073006
The inclusion of the unstable features of a spin-1 particle, without breaking the electromagnetic gauge invariance, can be properly accomplished by including higher order contributions as done in the so-called fermion loop scheme (for the W gauge boson), and the boson loop scheme (for vector mesons). This induces a non trivial modification to the electromagnetic vertex of the particle, which must be considered in addition to any other contribution computed as stable particles. Considering the modified electromagnetic vertex, we obtain general expressions for the corresponding corrections to the multipoles as a function of the mass of the particles in the loop. For the W gauge boson no substantial deviations from the stable case is observed. For the rho and K* mesons the mass of the particles in the loop makes a significant effect, and can be comparable with corrections of different nature .
Gudino Garcia D.
Sanchez Genaro Toledo
No associations
LandOfFree
Finite width induced modification to the electromagnetic form factors of spin-1 particles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Finite width induced modification to the electromagnetic form factors of spin-1 particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite width induced modification to the electromagnetic form factors of spin-1 particles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-373029