Sigma baryons

  • #1
12
1
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?
 

Answers and Replies

  • #2
dukwon
Science Advisor
Gold Member
80
62
The author must be distinguishing between baryons and antibaryons. Indeed strange antibaryons have positive strangeness.
 
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  • #3
12
1
Ok, I didn't think of that. Thank you!
 

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