This graphic illustrates the preferred mass values for new particles (labeled rho and kappa scalars) that extend the SM scalar spectrum in our setup. As shown, past lepton colliders (LEP) and the ...

Everything we see around us, from the ground beneath our feet to the most remote galaxies, is made of matter. For scientists, that has long posed a problem: According to physicists’ best current ...

“It’s not to say that neutrinos are definitely the explanation of the matter-antimatter asymmetry, but a very large class of models that can explain this asymmetry are connected to neutrinos,” says ...