A note on the fate of the Landau-Yang theorem in non-Abelian gauge theories

Matteo Cacciari; Luigi  Del Debbio; José R. Espinosa; Antonio D. Polosa; Massimo Testa

doi:10.1016/j.physletb.2015.12.053

A note on the fate of the Landau-Yang theorem in non-Abelian gauge theories

Matteo Cacciari, Luigi Del Debbio, José R. Espinosa, Antonio D. Polosa, Massimo Testa

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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.

Original language	Undefined/Unknown
Journal	Physics Letters B
Volume	753
DOIs	https://doi.org/10.1016/j.physletb.2015.12.053
Publication status	Published - 21 Dec 2015

Keywords

hep-ph
hep-th

Access to Document

10.1016/j.physletb.2015.12.053

http://arxiv.org/pdf/1509.07853v2

2 Finished

High-performance computing at the high-energy frontier: results for the LHC
Del Debbio, L.
UK-based charities
1/01/15 → 31/12/19
Project: Research
Particle Theory at the Higgs Centre
Ball, R., Berera, A., Boyle, P., Callison-Burch, C., Del Debbio, L., Gardi, E., Kennedy, A., O'Connell, D., Zwicky, R., Berera, A., Boyle, P., Buckley, A., Del Debbio, L., Gardi, E., Horsley, R., Kennedy, A., Kenway, R., O'Connell, D., Smillie, J. & Zwicky, R.
STFC
1/10/14 → 30/09/18
Project: Research

Cite this

@article{4f66ff2b07b34b9689c0143562678f29,

title = "A note on the fate of the Landau-Yang theorem in non-Abelian gauge theories",

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.",

keywords = "hep-ph, hep-th",

author = "Matteo Cacciari and {Del Debbio}, Luigi and Espinosa, {Jos{\'e} R.} and Polosa, {Antonio D.} and Massimo Testa",

note = "7 pages. v2: typos corrected, one reference added",

year = "2015",

month = dec,

day = "21",

doi = "10.1016/j.physletb.2015.12.053",

language = "Undefined/Unknown",

volume = "753",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - A note on the fate of the Landau-Yang theorem in non-Abelian gauge theories

AU - Cacciari, Matteo

AU - Del Debbio, Luigi

AU - Espinosa, José R.

AU - Polosa, Antonio D.

AU - Testa, Massimo

N1 - 7 pages. v2: typos corrected, one reference added

PY - 2015/12/21

Y1 - 2015/12/21

N2 - 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.

AB - 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.

KW - hep-ph

KW - hep-th

U2 - 10.1016/j.physletb.2015.12.053

DO - 10.1016/j.physletb.2015.12.053

M3 - Article

VL - 753

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

ER -

A note on the fate of the Landau-Yang theorem in non-Abelian gauge theories

Abstract

Keywords

Access to Document

Projects

High-performance computing at the high-energy frontier: results for the LHC

Particle Theory at the Higgs Centre

Cite this