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Screening effects in the ultrahigh energy neutrino interactions | | Krzysztof Kutak
; Jan Kwiecinski
; | | Date: |
25 Mar 2003 | | Journal: | Eur.Phys.J. C29 (2003) 521 | | Subject: | hep-ph | | Abstract: | We study possible saturation effects in the total cross-section describing interaction of ultrahigh energy neutrinos with nucleons. This analysis is performed within the two approaches, i.e. within the Golec-Biernat Wüsthoff saturation model and within the scheme unifying the DGLAP and BFKL dynamics incorporating non-linear screening effects which follow from the Balitzki-Kovchegov equation. The structure functions in both approaches are constrained by HERA data. It is found that screening effects affect extrapolation of the neutrino-nucleon total cross-sections to ultrahigh neutrino energies $E_{
u}$ and reduce their magnitude by a factor equal to about 2 at $E_{
u} sim 10^{12}GeV$. This reduction becomes amplified by nuclear shadowing in the case of the neutrino-nucleus cross-sections and approximate estimate of this effect is performed. | | Source: | arXiv, hep-ph/0303209 | | Services: | Forum | Review | PDF | Favorites | |
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