Where antimatter doesn't eat up matter?

[Baby Astronaut]

If an antielectron touched a proton, it wouldn't result in annihilation, huh? Same deal with antiprotons snuggling up to neutrinos.

 

 

(And in biology an antibody touching a body won't end up in annihilation. )

[granpa]

no annihilation. one of the delta baryons even breaks down into a proton and positron (and some neutrinos I guess)

[Baby Astronaut]

My thought: matter + antimatter will result in annihilation, and subatomic particles + their "anti" counterparts result in annihilation. But is this the case only for the same type of a particle and its opposite?

 

For example, proton and antiproton will annihilate. But proton and antineutron won't.

 

Is this correct?

[Severian]

Is this correct?

 

Yes, it has to be the particle's corresponding antiparticle for the annihilation to work.