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• W2006800437 abstract "It is shown that the combination of a bare Pomeron with intercept ${stackrel{^}{ensuremath{alpha}}}_{P}(0)=0.85$ in conjunction with a reasonable set of secondary Regge trajectories and a canonical absorption prescription is capable of providing a good global fit to practically all ${0}^{ensuremath{-}}{frac{1}{2}}^{+}ensuremath{rightarrow}{0}^{ensuremath{-}}{frac{1}{2}}^{+}$ meson-nucleon scattering data up to lab momenta of 30 GeV/c. The bare Pomeron with intercept lower than 1 has a large real part which greatly facilitates the description of the data. At higher energies, renormalization effects can be expected to be important as inelastic diffraction events, and these lead to a renormalized Pomeron intercept very close to or equal to one. The value ${stackrel{^}{ensuremath{alpha}}}_{P}(0)=0.85$ used throughout this intermediate-energy fit is in agreement with current inclusive triple-Regge data and maximum-rapidity-gap distributions. It is also in agreement with certain strong-coupling ABFST (Amati-Bertocchi-Fubini-Stanghellini-Tonin) multiperipheral model calculations. For secondary effects, we have used a family of vector Regge trajectories ($ensuremath{rho},ensuremath{omega},{K}^{*}$) with a degenerate intercept of about 0.45, and tensor trajectories (${A}_{2},{K}^{**}$) with an intercept of about 0.25. A second vacuum pole emerges with intercept close to 0. The ${p}^{ensuremath{'}} (f)$ trajectory, not included here, can perhaps be expected to appear in conjunction with the renormalization of the Pomeron. Although no wrong-signature nonsense zeros are included in the parametrization, the $ensuremath{rho}ensuremath{-}{A}_{2}$ and ${K}^{*}ensuremath{-}{K}^{**}$ pole couplings are nevertheless very nearly exchange degenerate. SU(3) is used to relate most of the other couplings. The (pole + cut) helicity-flip $ensuremath{rho}ensuremath{-}{A}_{2}$ and ${K}^{*}ensuremath{-}{K}^{**}$ amplitudes also show considerable exchange-degenerate characteristics. We have used a standard absorption prescription to calculate the second-order bare Pomeron $(stackrel{^}{P})ensuremath{bigotimes}$ Reggeon cuts and $stackrel{^}{P}ensuremath{bigotimes}stackrel{^}{P}$ cuts. An unusual result emerges---the enhancement ${ensuremath{lambda}}_{i}$ factors for all cuts are less than one. This indicates the presence of higher-order cuts which thus dominate over inelastic intermediate-state production in this approach. The data used in this fit are a representative selection of ${0}^{ensuremath{-}}{frac{1}{2}}^{+}ensuremath{rightarrow}{0}^{ensuremath{-}}{frac{1}{2}}^{+}$ data (including $ensuremath{pi}N$ amplitude analysis, hypercharge-exchange differential cross sections and polarizations; ${ensuremath{pi}}^{ifmmodepmelsetextpmfi{}}p$ and ${K}^{ifmmodepmelsetextpmfi{}}p$ total and differential cross sections, polarizations, and $t=0$ real-to-imaginary ratios; and $ensuremath{pi}N$ and $mathrm{KN}$ charge-exchange differential cross sections and polarizations) up to ${p}_{mathrm{lab}}=30$ GeV/c and $|t|=1.5$ ${(mathrm{G}mathrm{e}mathrm{V}/mathit{c})}^{2}$." @default.
• W2006800437 created "2016-06-24" @default.
• W2006800437 creator A5018172884 @default.
• W2006800437 creator A5037505161 @default.
• W2006800437 date "1974-10-01" @default.
• W2006800437 modified "2023-09-23" @default.
• W2006800437 title "Global description of0−12+→0−12+reactions utilizing the bare Pomeron" @default.
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• W2006800437 doi "https://doi.org/10.1103/physrevd.10.2102" @default.
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