The Standard Model predicts that quark-containing composite particles ... A diagram of neutrinoless double beta decay, which involves the simultaneous decay of two down ...

Normally a statistical significance of five standard definitions – equivalent to around a 1 in 3.5 million chance of being a coincidence – is required to declare something a “discovery.” ...

Holger Müller is in the Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA. However, the recoil energy is tiny and therefore hard to measure. Laser-based ...