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- W2023010314 abstract "We propose a new algebra which will hopefully contribute to the joint understanding of electromagnetic and weak structure functions and of Regge couplings. It involves an infinite number of form factors of arbitrary complex spin J (with Re(J−1) > 0) and definite signature. The algebra holds exactly in a quark-gluon model when quantized canonically on equal light fronts. If all form factors have k = 0 and J = 1, the algebra closes and becomes U(6) × U(6), with the connecting subgroups being associated with pure quarks and pure antiquark currents, respectively. This doubling of the group leads to exact exchange degeneracy if baryons and mesons consist of qqq and qq wave functions only.To some lowest approximation, Regge couplings can be calculated by representing U(6) × U(6) on properly mixed quark wave functions. With the mixing parameters fixed by the chiral subgroup, these couplings are determined up to an overall normalization.As an illustration, the coupling of the trajectories ϱ, ω; A2, f; A1, D; Z, Zsg; π, η; B, H trajectories are estimated for the meson resonances ϱ, ω; π, η; A2, f; A1, D; B, H; A0, σ. The trajectories π, η; B, H are not in the algebra initially but can be inferred from an extension of PCAC to the bilocal currents (“PCBC”)." @default.
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- W2023010314 date "1974-09-01" @default.
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- W2023010314 title "Quarks and reggeons" @default.
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- W2023010314 doi "https://doi.org/10.1016/0550-3213(74)90565-3" @default.
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