Heavy quark currents in ultra-high energy neutrino interactions View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2012-03-27

AUTHORS

R. Fiore, V. R. Zoller

ABSTRACT

We discuss heavy quark contributions to the neutrino-nucleon total cross section at very high energies, well above the real top production threshold. The top-bottom weak current is found to generate strong left-right asymmetry of neutrino-nucleon interactions. We separate contributions of different helicity states and make use of the κ-factorization to derive simple and practically useful formulas for the left-handed (FL) and right-handed (FR) components of the conventional structure function 2xF3 = FL − FR in terms of the integrated gluon density. We show that FL ≫ FR and, consequently, xF3 ≈ FT, where FT is the transverse structure function. The conventional structure function F2 = FS + FT at Q2 ≪ mt2 appears to be dominated by its scalar (also known as longitudinal) component FS and the hierarchy FS ≫ FL ≫ FR arises naturally. We evaluate the total neutrino-nucleon cross section at ultra-high energies within the color dipole BFKL-formalism. More... »

PAGES

55-60

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s002136401202004x

DOI

http://dx.doi.org/10.1134/s002136401202004x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1014097860


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