J/psi couplings to charmed resonances and to pi

Abstract

We present an evaluation of the strong couplings JD^(*)D^(*) and JD^(*)D^(*)pi by an effective field theory of quarks and mesons. These couplings are necessary to calculate pi+J/psi --> D^(*)+barD^(*) cross sections, an important background to the J/psi suppression signal in the quark-gluon plasma. We write down the general effective lagrangian and compute the relevant couplings in the soft pion limit and beyond.

arXiv comment11 pages, 4 figures, 2 reference added and minor comments, style changed to RevTeX

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• The hidden charm decay of Y(4140) by the rescattering mechanism
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• Using $X(3823)\to J/\psi {\pi }^{+}{\pi }^{-}$ to identify coupled-channel effects
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• On the Role of Charmed Meson Loops in Charmonium Decays
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• How higher charmonia shape the puzzling data of the $e^{+}{e}^{-}\to \eta J/\psi$ cross section
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• Study on decays of $Z_c(4020)$ and $Z_c(3900)$ into $h_c+\pi$
• Understanding B -->J/Ψϕin the Standard Model
• Analysis of the strong vertices ${\Lambda }_c{D}^{(\ast )}{N}^{\ast }(1535)$ and ${\Lambda }_b{B}^{(\ast )}{N}^{\ast }(1535)$ in QCD sum rules
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• Constrain the ${\chi }_{cJ}\to D^{(\ast )}{\bar{D}}^{(\ast )}$ effective couplings via the $X(3872)\to {\pi }^0{\chi }_{cJ}$ decays
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