To begin with, particles rarely interact with one another. I agree that energy is released, I never disagreed with that. Neutrinos are related because they are considered matter, it isn't off-topic. (Originally they were thought not to have mass, but recently it has been discovered that they do have their own separate masses). They rarely interact with each other and are difficult to observe. The ones of separate mass of course, release energy. But at times when the same mass collide, they disappear. What I'm saying is that their energy is theorized by these scientists to go into another part of the universe.
edit: sorry for not being clear, the theory is real antimatter close to absolute zero, not normal antimatter. My mistake for not clarifying this.