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arXiv · 2304.11008

Violation of the Landau-Yang theorem from Infrared Lorentz Symmetry Breaking

M. Asorey·A. P. Balachandran·Arshad Momen·B. Qureshi
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Abstract

Lorentz symmetry forbids decays of massive spin-1 particle like the $Z^0$ into two massless photons, a result known as the Landau-Yang theorem. But it is known that infrared effects can break Lorentz invariance. Employing the construction of Mund et. al. \cite{MRS} which incorporated this Lorentz violation, we propose an interaction leading to the decay $Z^0 \rightarrow 2 \gamma$ and study the dependence of the decay on the parameter of this Lorentz violation.

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M. Asorey, A. P. Balachandran, Arshad Momen, B. Qureshi. 2023-04-20. Violation of the Landau-Yang theorem from Infrared Lorentz Symmetry Breaking. https://arxiv.org/abs/2304.11008

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