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

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 $\gamma p\to n{H}^{+}$ 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 $\pi$ exchange, and its strange hybrid counterpart is predicted in $B\to \psi K_H(1^{+})$ with $b.r.\sim 10^{-4}$. Higher multipoles, and some implications for hybrid charmonium are briefly discussed.

arXiv comment4 pages

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Cited by in corpus (9)

• Hybrid Mesons
• Radiative Transitions in Charmonium from Lattice QCD
• Exotic and excited-state radiative transitions in charmonium from lattice QCD
• On the possibility of Deeply Bound Hadronic Molecules from single Pion Exchange
• Deep electroproduction of exotic hybrid mesons
• Exotic hybrid mesons in hard electroproduction
• Hybrid meson production by electromagnetic and weak interactions in a flux-tube simulation of lattice QCD
• The "forbidden" decays of hybrid mesons to $\pi \rho$ can be large
• The momentum distribution of J/psi in B decays