Abstract
A brief review of the results for the total cross section \(\sigma^{\nu N}\) of ultrahigh-energy neutrino deep inelastic scattering on isoscalar nuclear targets is presented. These results are based on simple approximations for \(\sigma^{\nu N}\) and are compared with the experimental data of the IceCube Collaboration. The total cross section \(\sigma^{\nu N}\) is proportional to the structure function \(F_{2}^{\nu N}(M_{V}^{2}/s,M_{V}^{2})\), where \(M_{V}\) is the intermediate boson mass and \(s\) is square of the energy of the center of mass. The coefficient in the front of \(F_{2}^{\nu N}(M_{V}^{2}/s,M_{V}^{2})\) depends on the asymptotic behavior of \(F_{2}^{\nu N}\) at low values of \(x\). It contains an additional term \(\sim\ln{s}\) if \(F_{2}^{\nu N}\) is scaled by the power \(\ln(1/x)\). Therefore, the asymptotic behavior of \(F_{2}^{\nu N}\propto\ln^{2}(1/x)\) for small \(x\) often assumed in the literature already leads to violation of the Froissart bound for \(\sigma^{\nu N}\).
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Funding
The work of A.V.K. was supported in part by the Russian Science Foundation under grant 22-22-00387. He thanks the Organizing Committee of the 4th International Symposium on Cosmic Rays and Astrophysics (ISCRA-2023) for their invitation.
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Kotikov, A.V., Kotikov, I.A. On Ultrahigh-Energy Neutrino-Nucleon Deep-Inelastic Scattering and the Froissart Bound. Phys. Atom. Nuclei 86, 1275–1280 (2023). https://doi.org/10.1134/S1063778824010241
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DOI: https://doi.org/10.1134/S1063778824010241