# If an antimatter-matter reaction is a perfect transfer of matter to energy (light), is there a perfect transfer of energy to matter?

I am aware that two photons can combine to form an electron and positron pair, but if any matter and antimatter can annihilate to form photons, shouldn't there be a way for photons, or any energy for that matter, to turn back into quarks other than electrons?

EDIT FOR CLARIFICATION: I am simply wondering if photons, or any energy for that matter, can create matter other than electrons/positrons. Specifically, I am wondering if photons could form antiquarks/antiprotons.

• Sure, you just need the resultant energy density to be sufficient. And for the created result to be stable enough to hang around long enough to be observed. That second bit is the problem, as electrons are one of the very, very few truely elemental particles that can exist naked by themselves. A quark by itself is so lonely, it suicides instantaneously. Jun 16, 2021 at 18:20
• Thank you @PcMan, but would you please mind elaborating? Is there an exact process that energy would have to go through, or is it just that if there is enough energy is a set amount of space, then it will just follow E=mc^2? Jun 16, 2021 at 18:27
• Try this link: medium.com/starts-with-a-bang/… Jun 16, 2021 at 18:29
• Then, is there any way to turn energy into say a proton? Jun 16, 2021 at 18:48
• Sure, you just need the resultant energy density to be sufficient. And for the created result to be stable enough.Hmm, that sounds familiar, i'm sure i've heard it somewhere, before. .. Ok. If you overpower it enough, and manage to make a single UP quark. A nice blue one. You will have given it enough energy to conjure up the needed UP and DOWN quark in suitable shades of blue and green, to form a proton. And enough leftover energy to pump out a few thousand other elemental bits of shrapnel. The energy needed to make one naked quark is way more than the total energy of a proton. Jun 17, 2021 at 6:24