Observation of an Intermediate State in $ψ (3684)$ Radiative Cascade Decay

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17 November 1975

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 35 (20), 1323-1326
https://doi.org/10.1103/physrevlett.35.1323

Abstract

We present evidence for the existence of an intermediate state observed in the decay sequence

ψ (3684) \to ψ (3095) γ γ

. The mass of the state is either 3500 ± 10 or 3270 ± 10 MeV. The branching fraction of the sequence is (3.6 ± 0.7)%.

Keywords

This publication has 10 references indexed in Scilit:

$ψ (3684)$ Radiative Decays to High-Mass States
Physical Review Letters, 1975
Search for MonenergeticγRays fromψ(3684)Decay
Physical Review Letters, 1975
Observation of the two photon cascade 3.7 → 3.1 + γγ via an intermediate state Pc
Physics Letters B, 1975
Decay of $ψ (3684)$ into $ψ (3095)$
Physical Review Letters, 1975
Spectrum of Charmed Quark-Antiquark Bound States
Physical Review Letters, 1975
Spectroscopy of the New Mesons
Physical Review Letters, 1975
Measurement of $e^{+} e^{-} \to e^{+} e^{-}$ and $e^{+} e^{-} \to μ^{+} μ^{-}$
Physical Review Letters, 1975
Discovery of a Second Narrow Resonance in $e^{+} e^{-}$ Annihilation
Physical Review Letters, 1974
Discovery of a Narrow Resonance in $e^{+} e^{-}$ Annihilation
Physical Review Letters, 1974
Experimental Observation of a Heavy Particle $J$
Physical Review Letters, 1974

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