Table of Contents
ISRN High Energy Physics
Volume 2014, Article ID 462824, 5 pages
Research Article

Analytical Evaluation of the Neutrino-Nucleon Interaction Cross-Sections at Ultrahigh Energy

1Department of Physics, Arya Vidyapeeth College, Guwahati 781016, India
2Department of Physics, Gauhati University, Guwahati 781014, India

Received 2 November 2013; Accepted 20 November 2013; Published 2 February 2014

Academic Editors: K. Cho, I. Lokhtin, and S. Paganis

Copyright © 2014 Pijush Kanti Dhar and D. K. Choudhury. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The ultrahigh energy (UHE) neutrino-nucleon interaction cross-sections are evaluated analytically in one loop by using the solutions of Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equations. Since the genesis of the UHE neutrinos is various sources which have energy more than 105 GeV, so parton distributions are extrapolated at ultralow to determine the charged current and the neutral current cross-sections. We then compare our analytically obtained extrapolated results with the next-to-leading order (NLO) results of various other authors. A good agreement between the two reflects the veracity of our approach of extrapolation at ultralow .