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arXiv · 2309.12822

Pionic Final State Interactions and the Hypertriton Lifetime

Fabian Hildenbrand·Hans-Werner Hammer
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Abstract

We analyze the contribution of pionic final state interactions (FSI) in the weak decay of the hypertriton. Focusing on the $^3$He channel, we find a contribution of the pionic FSI of the order of $18\%$. Assuming a fixed value for the branching ratio $R_3$ for the decay width into $^3$He over the decay width into $^3$He and $pd$ final states, we find values for the hypertriton lifetime that are consistent with the world average as well as recent measurements by the ALICE Collaboration.

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Fabian Hildenbrand, Hans-Werner Hammer. 2023-09-22. Pionic Final State Interactions and the Hypertriton Lifetime. https://arxiv.org/abs/2309.12822

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