Using elementary considerations of Lorentz invariance, Bose symmetry and BRST invariance, we argue why the decay of a massive color-octet vector state into a pair of on-shell massless gluons is possible in a non-Abelian SU(N) Yang–Mills theory, we constrain the form of the amplitude of the process and offer a simple understanding of these results in terms of effective-action operators.
A note on the fate of the Landau-Yang theorem in non-Abelian gauge theories / Cacciari, Matteo; Del Debbio, Luigi; Espinosa, José R.; Polosa, ANTONIO DAVIDE; Testa, Massimo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 753:(2016), pp. 476-481. [10.1016/j.physletb.2015.12.053]
A note on the fate of the Landau-Yang theorem in non-Abelian gauge theories
POLOSA, ANTONIO DAVIDE;TESTA, Massimo
2016
Abstract
Using elementary considerations of Lorentz invariance, Bose symmetry and BRST invariance, we argue why the decay of a massive color-octet vector state into a pair of on-shell massless gluons is possible in a non-Abelian SU(N) Yang–Mills theory, we constrain the form of the amplitude of the process and offer a simple understanding of these results in terms of effective-action operators.| File | Dimensione | Formato | |
|---|---|---|---|
|
Cacciari_Note_2016.pdf
accesso aperto
Note: Articolo principale
Tipologia:
Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza:
Creative commons
Dimensione
347.28 kB
Formato
Adobe PDF
|
347.28 kB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
