Neutral-current neutrino-nucleus cross sections based on relativistic nuclear energy density functional

Đapo, Haris and Paar, Nils (2012) Neutral-current neutrino-nucleus cross sections based on relativistic nuclear energy density functional. Physical Review C, 86 (3). pp. 35804-9. ISSN 0556-2813

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Abstract

Background: Inelastic neutrino-nucleus scattering through the weak neutral-current plays an important role in a stellar environment where the transport of neutrinos determines the rate of cooling. Since there are no direct experimental data on neutral-current neutrino-nucleus cross sections available, only the modeling of these reactions provides the relevant input for supernova simulations. Purpose: To establish a fully self-consistent framework for neutral-current neutrino-nucleus reactions based on a relativistic nuclear energy density functional. Methods: Neutrino-nucleus cross sections are calculated using a weak Hamiltonian and nuclear properties of initial and excited states are obtained with a relativistic Hartree-Bogoliubov model and a relativistic quasiparticle random phase approximation that is extended to include pion contributions for unnatural parity transitions. Results: Inelastic neutral-current neutrino-nucleus cross sections for 12C, 16O, 56Fe, 56Ni, and even isotopes 92−100Mo as well as respective cross sections averaged over distribution of supernova neutrinos. Conclusions: The present study provides insight into neutrino- nucleus scattering cross sections in the neutral channel, their theoretical uncertainty in view of recently developed microscopic models, and paves the way for systematic self-consistent large- scale calculations involving open-shell target nuclei.

Item Type: Article
Keywords: neutrino, nucleus, weak interaction, neutral current
Date: September 2012
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2012) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191005-1010
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 03 Jun 2014 08:23
Last Modified: 23 Feb 2016 15:55
URI: http://digre.pmf.unizg.hr/id/eprint/2146

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