13,264 research outputs found
Implication of BaBar's new data on the and
The strong decays of the and are investigated
in the framework of the model. Its decay properties newly reported by
the BaBar Collaboration can be reasonably accounted for in the presence of the
being a mixture of the and . The
orthogonal partner of the is expected to have a mass of about
GeV in quark models and a width of about MeV in the
model. The predicted decay properties turn out to be consistent with
the BaBar's new data in both the orthogonal partner of the and
the interpretations for the . The available
experimental information is not enough to distinguish these two possibilities.
The radiative transitions of the and are
also studied. We tend to conclude that the can be identified as
a mixture of the and , and the
could be either the orthogonal partner of the or the . Further experimental information on the in the
, , and channels is needed.Comment: 13 pages, 2 figures, version accepted for publication in Phys. Rev.
Properties of the scalar mesons , and
In the three-state mixing framework, considering the possible glueball
components of and , we investigate the hadronic decays of
, and into two pseudoscalar mesons. The
quarkonia-glueball content of the three states is determined from the fit to
the new data presented by the WA102 Collaboration. We find that these data are
insensitive to the possible glueball components of and .
Furthermore, we discuss some properties of the mass matrix describing the
mixing of the isoscalar scalar mesons.Comment: Latex 14 pages including 1 eps figur
The observed by the BES Collaboration
In the framework of the meson decay model, the strong decays of the
and states are investigated. It is found that in
the presence of the initial state mass being 2.24 GeV, the total widths of the
and states are about 438 MeV and 125 MeV,
respectively. Also, when the initial state mass varies from 2220 to 2400 MeV,
the total width of the state varies from about 100 to 132
MeV, while the total width of the state varies from about
400 to 594 MeV. A comparison of the predicted widths and the experimental
result of GeV, the width of the
with a mass of GeV recently observed by the
BES Collaboration in the radiative decay , suggests that it would be very difficult to identify the
as the state, and the seams a
good candidate for the state.Comment: 14 pages, 3 figures, typos corrected, Accepted by Physical Review
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