Evidence of a new subatomic particle observed
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7Evidence of a new subatomic particle observed
e.g., J/ψ→γppabr , J/ψ→γπ+π-η'
was already proposed by Prof. E. Fermi and Prof. C. N. Yang.
X(1840) is a new structure discovered in the J/ψ→γ3(π+π-)
1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV/c,
and the proton's effective form factor determined from e+e-→ppbar,
Before the birth of Quark Model, a nucleon-antinucleon bound state
investigation on the 3(π+π-) mass spectrum with 10 billion J/ψ events,
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Evidence of a new subatomic particle observed
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GOLAHURA
e.g.
J/ψ→γppabr
J/ψ→γπ+π-η'
was already proposed by Prof. E. Fermi and Prof. C. N. Yang.
X(1840) is a new structure discovered in the J/ψ→γ3(π+π-)
1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV/c
and the proton's effective form factor determined from e+e-→ppbar
Before the birth of Quark Model
a nucleon-antinucleon bound state
investigation on the 3(π+π-) mass spectrum with 10 billion J/ψ events