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Nuclear and nucleon transitions of the H di-baryon

Glennys R. Farrar·Gabrijela Zaharijas
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Abstract

We consider 3 types of processes pertinent to the phenomenology of an H di-baryon: 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 wavefunction overlap using the Isgur-Karl and Bethe-Goldstone wavefunctions, and treat the weak interactions phenomenologically. The observation of $Λ$ decays from doubly-strange hypernuclei puts a constraint on the H wavefunction which is plausibly satisfied. In this case the H is very long-lived as we calculate. An absolutely stable H is not excluded at present. SuperK can provide valuable limits.

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Glennys R. Farrar, Gabrijela Zaharijas. 2003-08-12. Nuclear and nucleon transitions of the H di-baryon. https://doi.org/10.1103/physrevd.70.014008

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