https://doi.org/10.1140/epja/s10050-023-01197-z
Regular Article - Theoretical Physics
Pionic final state interactions and the hypertriton lifetime
1
Institut für Kernphysik, Institute for Advanced Simulation and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425, Jülich, Germany
2
Institut für Kernphysik, Technische Universität Darmstadt, 64289, Darmstadt, Germany
3
ExtreMe Matter Institute EMMI and Helmholtz Forschungsakademie Hessen für FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291, Darmstadt, Germany
Received:
5
October
2023
Accepted:
16
November
2023
Published online:
24
November
2023
We analyze the contribution of pionic final state interactions (FSI) in the weak decay of the hypertriton. Focusing on the 
He channel, we find a contribution of the pionic FSI of the order of 
. Assuming a fixed value for the branching ratio 
for the decay width into He over the decay width into 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.
© The Author(s) 2023
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