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Extra U(1) as natural source of a monochromatic gamma ray line
Extensions of the Standard Model with an extra U'(1) abelian group generically generate terms coming from loops of heavy fermions, leading to three gauge boson couplings, in particular Z'Z gamma. We show that WMAP data constrains the gauge coupling of the group g_D to values comparable wit...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2012
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1007/JHEP10(2012)123 http://cds.cern.ch/record/1447187 |