New particles excite experimenters and puzzle theorists

The world of high‐energy physics has been set afire by the discovery of a new particle with very narrow width at 3.1 GeV. Experimentalists everywhere have rushed to their laboratories to try to measure some of the properties of the new particle. Already a second particle has been found at 3.695 GeV by one of the two groups that discovered the first particle. Theorists are consulting in corridors and in hastily summoned seminars to discuss possible interpretations of the discoveries. Some are calling the events “the greatest thing since strange particles.”