hep-ph/0408334 ANGULAR DISTRIBUTIONS IN J/ψ(ρ 0, ω) STATES NEAR THRESHOLD 1
نویسنده
چکیده
A resonance X(3872), first observed in the decays B → KX, has been seen to decay to J/ψππ. The ππ mass spectrum peaks near its kinematic upper limit, prompting speculation that the dipion system may be in a ρ. The decay X(3872) → J/ψω also has been observed. The reaction γγ → J/ψππ has been studied. Consequently, angular distributions in decays of J/ψ(ρ, ω) states near threshold are of interest, and results are presented.
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تاریخ انتشار 2004