Are Δ- and Δ+ Antiparticles of Each Other?

[Jorji Foote]

So just recently learning about anti particles and I can't seem to find the answer to such a seemingly easy question but here goes. Let's say you have a negatively charged delta particle Δ^-, is that the anti particle of Δ⁺ just how the e+ positron is the anti particle of an e- electron because in one of my textbooks it shows the Δ- with a line atop it indicating that it is an antiparticle is this like a case of a double negative equaling a positive? or am I needlessly getting confused.

 

[phyzguy]

I'm not a particle physics expert, but I can answer this one. If you look at the quark constituents of the delta baryons (for example, here on Wikipedia), you will see that the Δ+ is uud, and the Δ- is ddd. So they are not antiparticles of each other. There is an antiparticle of the Δ+ which is (anti-up, anti-up, anti-down) and an antiparticle of the Δ- which is (anti-down, anti-down, anti-down).

 

[Jorji Foote]

I'm not a particle physics expert, but I can answer this one. If you look at the quark constituents of the delta baryons (for example, here on Wikipedia), you will see that the Δ+ is uud, and the Δ- is ddd. So they are not antiparticles of each other. There is an antiparticle of the Δ+ which is (anti-up, anti-up, anti-down) and an antiparticle of the Δ- which is (anti-down, anti-down, anti-down).

Ahh ok thank you.