Test of the universal rise of hadronic total cross sections at super-high energies
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The increase of the total cross sections at very high energies described by log2(s/s0) appears to be confirmed. In the analysis of the COMPETE collaboration in the Particle Data Group (2006), the Blog2(s/s0) was assumed to extend the universal rise of all the total hadronic cross sections to reduce the number of adjustable parameters. We test if the assumption on the universality of B is justified, through investigation of the values of B for π±p(K±p) and p̄p,pp scatterings. We search for the simultaneous best fit to the σtot and ρ ratios, using a constraint from the FESR of the P′ type for π∓p scatterings and constraints that are free from the unphysical regions for the p̄p,pp and K±p scatterings. By including rich information of the low-energy scattering data owing to the use of FESR, the errors of the B parameters decrease especially for πp. The resulting value of Bpp is consistent with Bπp within two standard deviations, which appears to support the universality hypothesis.
KeywordsTotal Cross Section Particle Data Group Unphysical Region Hadronic Total Cross Section Exact Constraint
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- 11.Particle Data Group, W.-M. Yao et al., J. Phys. G: Nucl. Part. Phys. 33, 337 (2006)Google Scholar
- 15.V.D. Apokin et al., Yad. Fiz. 24, 99 (1976)Google Scholar
- 16.V.D. Apokin et al., Yad. Fiz. 21, 1240 (1975)Google Scholar
- 17.V.D. Apokin et al., Sov. J. Nucl. Phys. 28, 786 (1978)Google Scholar