Electroweak production of hybrid mesons in a flux-tube simulation of lattice QCD

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 gammap-->nH(+) allowing production of (among others) the...

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Published in:Physical review letters 2003-10, Vol.91 (14), p.142001-142001, Article 142001
Main Authors: Close, F E, Dudek, J J
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Language:English
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description 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 gammap-->nH(+) allowing production of (among 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-->psiK(H)(1(+)) with branching ratio B approximately 10(-4). Higher multipoles and some implications for hybrid charmonium are briefly discussed.
doi_str_mv 10.1103/PhysRevLett.91.142001
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title Electroweak production of hybrid mesons in a flux-tube simulation of lattice QCD
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