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.
2016
Decay of a vector state; Non abelian gauge theories; BRST invariance
01 Pubblicazione su rivista::01a Articolo in rivista
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]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/956899
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