6,851 research outputs found
Hadronic decays of charmonia from BESII
Recent results on charmonia decays at BESII/BEPC are reported, including the
observation of psi'-->K_S K_L, psi'--> Vector + Tensor and psi'--> Vector +
Pseudoscalar for the measurement of the relative phase between the strong and
electromagnetic decays of psi' and a test of the pQCD ``12% rule'' between psi'
and J/psi decays; the test of the color-octet mechanism via chi_cJ --> p
\bar{p} and chi_cJ-->\Lambda \bar{\Lambda}; the first observation of chi_c0-->
f_0(980)f_0(980); and a study of the psi' and chi_cJ decays with K_S K_S in the
final states.Comment: Invited talk in MESON 200
Hadron Spectroscopy from BES and CLEOc
Recent results from BES and CLEOc experiments on hadron spectroscopy and
charmonium decays using J/psi, psi' and psi'' data samples collected in e+e-
annihilation are reviewed, including the observation of X(1835) in J/psi -->
gamma pi+ pi- eta', study of the scalar particles in J/psi radiative and
hadronic decays, as well as in chi_c0 hadronic decays, and the study of the
``\rho\pi puzzle'' in J/psi, psi', and psi'' decays. We also make a few
comments on partial wave analysis, and the study of the \rho \pi puzzle.Comment: Invite talk at Hadron'05, Rio de Janero, Aug. 200
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