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Coupled-channel model for charmonium levels and an option for X(3872)
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Coupled-channel model for charmonium levels and an option for X(3872)
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The effects of charmed meson loops on the spectrum of charmonium are considered, with special attention paid to the levels above open-charm threshold. It is found that the coupling to charmed mesons generates a structure at the D \bar{D}* threshold in the 1++ partial wave. The implications for the nature of the X(3872) state are discussed.
Forward citations
Cited by 4 Pith papers
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Proposed mixing between $2P$ and $1F$ wave charmonia
Unquenched calculation finds sizable 2P-1F mixing in charmonium with angles 7.5° and 15.4°, yielding predictions for two-photon and two-gluon decay widths.
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Proposed mixing between $2P$ and $1F$ wave charmonia
Unquenched coupled-channel calculations yield sizable 2P–1F mixing angles of 7.5° and 15.4° for the χ_c2 charmonia, with predicted two-photon and two-gluon widths as experimental tests.
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Comparing relativistic and non-relativistic quark pair creation models
Relativistic and non-relativistic QPC models produce strong decay width predictions of similar overall quality for light mesons, with the relativistic version exhibiting stronger suppression at high energies.
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Unquenched Charmonium and Beyond
This Lanzhou-group review argues that coupled-channel (unquenched) effects, not exotic constituents, are the common thread explaining charmonium anomalies from the rho-pi puzzle to the Y-problem states.
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