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Composed of bottom quark and bottom antiquark Mass: 9.46 GeV /c 2 Lifetime: 1.21 x 10 -20 s

The Upsilon Meson. Composed of bottom quark and bottom antiquark Mass: 9.46 GeV /c 2 Lifetime: 1.21 x 10 -20 s Charge: 0 Spin: 1. Discovery. Discovered in Fermi Lab in 1977 by Leon M. Lederman et al.

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Composed of bottom quark and bottom antiquark Mass: 9.46 GeV /c 2 Lifetime: 1.21 x 10 -20 s

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  1. The Upsilon Meson Composed of bottom quark and bottom antiquark Mass: 9.46 GeV/c2 Lifetime: 1.21 x 10-20 s Charge: 0 Spin: 1 Discovery Discovered in Fermi Lab in 1977 by Leon M. Lederman et al. The experiment was done to study the muons or electrons produced from the collision of protons onto a platinum target. A noticeable “data bump” was observed at energies near 9.5 BeVdue to the production of Upsilon particles. More experiments needed to be done and more Upsilon-particle-producing events needed to be observed before the team was satisfied, possibly due to the non-existent Oops-Leon particle “discovery” the previous year. Importance Confirmed the existence of the bottom quark, which helped to verify the Standard Model.

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