Pionic Final State Interactions and the Hypertriton Lifetime
Abstract
We analyze the contribution of pionic final state interactions (FSI) in the weak decay of the hypertriton. Focusing on the 3He channel, we find a contribution of the pionic FSI of the order of 18\%. Assuming a fixed value for the branching ratio R3 for the decay width into 3He over the decay width into 3He 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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