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- W4287448666 abstract "We propose a model-independent ansatz M=βx(x+c0)ν+c1 (x=l,nr) and then use it to fit the orbital and radial pion Regge trajectories without the preset values. It is shown that nonzero c1 is reasonable and acceptable. Nonzero c1 gives an explanation for the nonlinearity of the pion Regge trajectories in the usually employed (M2,x) plane. As mR or c1 is chosen appropriately, both the orbital and radial pion Regge trajectories are linear in the ((M−mR)2,x) plane whether the π0 is included or not on the Regge trajectories. The fitted pion Regge trajectories suggest 0.45≤ν≤0.5, which indicates the confining potential ra with 9/11≤a≤1. Moreover, it is illustrated in the appendix B that mR can be nonzero for the light nonstrange mesons. We present discussions in the appendix A on the structure of the Regge trajectories plotted in the (M,x) plane and on the structure of the Regge trajectories in the ((M−mR)2,x) plane based on the potential models and the string models." @default.
- W4287448666 created "2022-07-25" @default.
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- W4287448666 date "2022-10-01" @default.
- W4287448666 modified "2023-10-01" @default.
- W4287448666 title "Revisiting the pion Regge trajectories" @default.
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- W4287448666 doi "https://doi.org/10.1016/j.nuclphysb.2022.115911" @default.
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