Can Baryons with Positive Strangeness Exist?

[Federica]

Hi all,

I read on "Intoduction to Elementary Particle Physics" (A. Bettini) that baryons with positive strangeness cannot exist. I don't know what to conclude from this sentence: sigma-baryons have negative strangeness, since there's a sigma as valence quark. But these baryons have, of course, their own antiparticles, which should have positive strangeness, right?

 

[dukwon]

The author must be distinguishing between baryons and antibaryons. Indeed strange antibaryons have positive strangeness.

 

[Federica]

Ok, I didn't think of that. Thank you!