3 julio 2015
An international team has been developing a new experimental technique – the decay-pion spectroscopy of electro-produced hypernuclei since 2011. They have now used this new technique to successfully measure the mass of [4?H], which consists of one proton, two neutrons and one ? particle.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/qDZP7KzO_hY/150703125932.htm
