Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-07-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 2 figures, to be published in JETP Letters
Scientific paper
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 $\bkappa$-factorization to derive simple and practically useful formulas for the left-handed ($F_L$) and right-handed ($F_R$) components of the conventional structure function $2xF_3=F_L-F_R$ in terms of the integrated gluon density. We show that $F_L\gg F_R$ and, consequently, $xF_3\approx F_T$, where $F_T$ is the transverse structure function. The conventional structure function $F_2=F_S+F_T$ at $Q^2\ll m_t^2$ appears to be dominated by its scalar (also known as longitudinal) component $F_S$ and the hierarchy $F_S\gg F_L\gg F_R$ arises naturally. We evaluate the total neutrino-nucleon cross section at ultra-high energies within the color dipole BFKL formalism.
Fiore Roberto
Zoller Vladimir R.
No associations
LandOfFree
Heavy quark currents in ultra-high energy neutrino interactions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Heavy quark currents in ultra-high energy neutrino interactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heavy quark currents in ultra-high energy neutrino interactions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-676183