Pions

Some articles on pion, pions:

Relativistic Rocket - Matter-antimatter Annihilation Rockets - Design Notes On A Pion Rocket
... The pion rocket has been studied independently by Robert Frisbee and Ulrich Walter, with similar results ... Pions, short for pi-mesons, are produced by proton-antiproton annihilation ... with a mass of regular protons pumped inside the magnetic confinement nozzle of a pion rocket engine, usually as part of hydrogen atoms ...
Jack Steinberger - Early Career
... In 1949 he published a calculation of the lifetime of the neutral pion, which anticipated the study of anomalies in quantum field theory ... demonstrated the production of neutral pions and their decay to photon pairs ... Measurements of the production cross section of pions on various nuclear targets showed that the pion has odd parity ...
Heavy Baryon Chiral Perturbation Theory
... field theory used to describe the interactions of pions and nucleons/baryons ... (ChPT) which just describes the low-energy interactions of pions ... describe the interactions of baryons with pions ...
Particle Shower - Types of Showers - Hadronic Showers
... The remainder is consumed in multiparticle production of slow pions and in other processes ... of the hadronic showers are hadron production, nuclear deexcitation and pions and muon decays ... Neutral pions amount, on average to 1/3 of the produced pions and their energy is dissipated in the form of electromagnetic showers ...
CP Violation in Neutral Meson Oscillations - Neutral Kaon Mixing - Mixing
... of CP with opposite eigenvalues K1 has CP = +1, and K2 has CP = -1 Since the two-pion final state also has CP = +1, only the K1 can decay this way ... The K2 must decay into three pions ... a little larger than the sum of the masses of three pions, this decay proceeds very slowly, about 600 times slower than the decay of K1 into two pions ...