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 / Materials (for Non-textual outputs)

hep-ph
hep-th

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10.1016/j.physletb.2015.12.053

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

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

Cite this

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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.",

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

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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

SN - 0370-2693

VL - 753

JO - Physics Letters B

JF - Physics Letters B

ER -

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

Abstract

Keywords / Materials (for Non-textual outputs)

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Projects

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

Particle Theory at the Higgs Centre

Cite this