### Abstract

We consider 3 types of processes pertinent to the phenomenology of an H dibaryon: conversion of two Λ's in a doubly strange hypernucleus to an H, decay of the H to two baryons, and-if the H is light enough-conversion of two nucleons in a nucleus to an H. We compute the spatial wave function overlap using the Isgur-Karl, Miller-Spencer and Bethe-Goldstone wave functions, and treat the weak interactions phenomenologically. The observation of Λ decays from doubly strange hypernuclei puts a constraint on the H wave function which is plausibly satisfied. Imposing this constraint, we obtain model-independent lower limits on the H lifetime; if m_{H}<m _{N}+m_{Λ}, the H lifetime can be of the order of or longer than the age of the Universe. We discuss limits on a long-lived or stable H, and point out how experiments can improve the constraints.

Original language | English (US) |
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Article number | 014008 |

Pages (from-to) | 014008-1-014008-11 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 70 |

Issue number | 1 |

DOIs | |

State | Published - Jul 2004 |

### ASJC Scopus subject areas

- Physics and Astronomy (miscellaneous)

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## Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*70*(1), 014008-1-014008-11. [014008]. https://doi.org/10.1103/PhysRevD.70.014008