October 1, 1978
1 min read
The Upsilon Particle
Its unexpected discovery as the heaviest particle has prompted physicists to introduce a massive new quark, raising the number of these unobserved elementary subparticles from four to five
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October 1, 1978
1 min read
The Upsilon Particle
Its unexpected discovery as the heaviest particle has prompted physicists to introduce a massive new quark, raising the number of these unobserved elementary subparticles from four to five