The CLEO detector at Cornell studies the decay of tauons into a neutrino and six of these.
The CLEO detector at Cornell studies the decay of tauons into a neutrino and six of these. The OZI rule explains why the phi meson does not decay into this particle. Rho decay produces two of these particles. The non-charged variety of these particles can decay into a positron, electron and photon in a process known as Dalitz decay, although that decay is statistically less probable than generating two gamma ray photons. The charged variety of this particle consists of an up and anti-down quark. The Yukawa interaction describes the behaviour of nucleons and these. For 10 points, name this spin-zero particle, the lightest meson.
The CLEO detector at Cornell studies the decay of tauons into a neutrino and six of these.
pion [or pi meson; prompt on \"meson\"]