A free neutron outside a nucleus is not stable. It undergoes beta decay at a probability. Over time, the number of free neutrons decreases exponentially at a time constant, which is called the neutron ...

(Inside Science) — Exactly how long a neutron lives is currently under debate. Now researchers suggest this mystery could be solved if neutrons sometimes decay into particles of dark matter, the ...

The neutron is a bit of a headache for physics. A neutron is an electrically neutral particle that helps glue protons together in the nucleus of atoms. Inside the atom, it is happily stable. But a ...