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arXiv · 2211.10126

Three-particle Lellouch-Lüscher formalism in moving frames

Fabian Müller·Jin-Yi Pang·Akaki Rusetsky·Jia-Jun Wu
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Abstract

A manifestly relativistic-invariant Lellouch-Lüscher formalism for the three-particle decays is proposed. Similarly to ref.[1], the formalism is based on the use of the non-relativistic effective Lagrangians. Manifest Lorentz invariance is guaranteed, as in ref.[2], by choosing the quantization axis along the total four-momentum of the three-particle system. A systematic inclusion of the higher-order derivative couplings, as well as higher partial waves is addressed.

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Fabian Müller, Jin-Yi Pang, Akaki Rusetsky, Jia-Jun Wu. 2023-02-27. Three-particle Lellouch-Lüscher formalism in moving frames. https://arxiv.org/abs/2211.10126

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