A Science Daily report discusses observations of cosmic gamma rays that suggest that magnetic fields in the universe disproportionately have left handed rather than right handed helicity. It goes on to suggest that under a 2001 theory of another physicist that this could explain matter-antimatter asymmetry in the universe. http://www.sciencedaily.com/releases/2015/05/150514085655.htm Is there anything in the Standard Model that would suggest this? (The weak force has chiral asymmetry, but I've never known that there was something similar in electromagnetism.) By what mechanism would one lead to the other?