The known hyperons and their properties are listed in Table I of the companion lectures on Strange Particles. Most of these hyperons have lifetimes of the order of 10⁻¹⁰ sec, with the exception of the Σ⁰-hyperon whose electromagnetic decay has an exceedingly short lifetime.

In this case it appears to have been randomly applied, like bandages on an unlocatable wound.

The origin is a diagnostic point when the keratoma begins as a slightly elevated plaque, but it usually begins in the same way as the senile wart, as a slightly elevated papillomatous structure with a granular feel.

They should have finished by now; I'll call them to check.