Asymptotic neutrino-nucleon cross section and saturation effects

Journal Article · Wed Mar 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.053012· OSTI ID:20776847

Fiore, R; Papa, A ^[1]; Jenkovszky, L L ^[2]; Kotikov, A V ^[3]; Paccanoni, F ^[4]

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1. Dipartimento di Fisica, Universita della Calabria, Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, I-87036 Arcavacata di Rende, Cosenza (Italy)
2. Bogolyubov Institute for Theoretical Physics, Academy of Sciences of Ukraine, UA-03143 Kiev (Ukraine)
3. Bogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation)
4. Dipartimento di Fisica, Universita di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, via F. Marzolo 8, I-35131 Padova (Italy)

In this paper we present a simple analytic expression for the (spin-averaged) neutrino-nucleon cross section for ultrahigh energies at twist-2, obtained as the asymptotic limit of our previous findings. This expression gives values for the cross section in remarkable numerical agreement with the previous numerical evaluation in the energy region relevant for forthcoming neutrino experiments. Moreover, we discuss the role and the relevance of saturation and recombination effects in our approach, in comparison with other recent suggestions.

• OSTI ID: 20776847
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 5; Other Information: DOI: 10.1103/PhysRevD.73.053012; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
NEUTRINO REACTIONS
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINOS
NUCLEONS
RECOMBINATION
SPIN