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Electroweak production of hybrid mesons in a Flux-Tube simulation of Lattice QCD

F. E. Close·J. J. Dudek
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Abstract

We make the first calculation of the electroweak couplings of hybrid mesons to conventional mesons appropriate to photoproduction and to the decays of $B$ or $D$ mesons. $E1$ amplitudes are found to be large and may contribute in charge exchange $γp \to n H^+$ allowing production of (amongst others) the charged $1^{-+}$ exotic hybrid off $a_2$ exchange. Axial hybrid meson photoproduction is predicted to be large courtesy of $π$ exchange, and its strange hybrid counterpart is predicted in $B \to ψK_H(1^+)$ with $b.r. \sim 10^{-4}$. Higher multipoles, and some implications for hybrid charmonium are briefly discussed.

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F. E. Close, J. J. Dudek. 2003-05-08. Electroweak production of hybrid mesons in a Flux-Tube simulation of Lattice QCD. https://doi.org/10.1103/physrevlett.91.142001

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