Comment on "Ultrahigh-Energy Neutrino-Nucleon Deep-Inelastic Scattering and the Froissart Bound": Phys. Rev. Lett. 106, 231802 (2011)

The authors of a recent paper, "Ultrahigh-Energy Neutrino-Nucleon Deep-Inelastic Scattering and the Froissart Bound", A. Illarianov, B. Kniehl and A. Kotikov, Phys. Rev. Lett. 106, 231802 (2011), derive an approximate formula for the UHE limit of $σ_{νN}(s)$ in a class of models that includes our own and assert that they are led "to the important observation that $σ_{BBT}^{νN} \propto ln^3s$, which manifestly violates the Froissart bound [2] in contrast to what is stated in Refs. [6-8]", the latter reference being to our work and the $σ_{BBT}^{νN}$ to the cross sections we reported there. We here correct their erroneous implication that $σ_{νN}(s) should satisfy the Froissart bound and their mistaken assertion that we state that$σ_{BBT}^{νN}$ satisfies it.

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