Measuring psi(3770) -> Kshort Klong as a test of the S- and D-wave mixing of charmonia

Details Measuring psi(3770) -> Kshort Klong as a test of the S- and D-wave mixing of charmonia Measuring psi(3770) -> Kshort Klong as a test of the S- and D-wave mixing of charmonia

2004-02-22

arxiv.org/abs/hep-ph/0402227v2

Phys.Rev.D70:077505,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure

Scientific paper

10.1103/PhysRevD.70.077505

Adding to the long standing "rho-pi puzzle" in psi(3686) and J/psi decays, recently BES reported the branching ratio of psi(3686) -> Kshort Klong which is enhanced relative to the pQCD " 12% rule" expectation from the branching ratio of J/psi -> Kshort Klong. If the enhancement is due to the mixing of the S- and D-wave charmonium states as in the rho-pi case, the newly measured branching ratio of psi(3686) -> Kshort Klong gives a constraint on the psi(3770) -> Kshort Klong. It serves as a good test for the scenario of the S- and D-wave mixing in the psi(3686) and psi(3770).

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