2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 3, 389-396

The role of strange sea quarks on neutrino-nucleus reactions in Superkamiokande and in the supernova r-process

E. Kolbe1 - K. Langanke2 - F.-K. Thielemann1

1 Departement für Physik und Astronomie, Universität Basel, Basel, Switzerland
2 Institute for Physics and Astronomy and Theoretical Center for Astrophysics, University of Aarhus, Aarhus, Denmark

Received: 30 April 1998 / Revised version: 10 August 1998 Communicated by W. Weise

We study the influence of a strange axial vector form factor Gs of the nucleon on the neutrino-induced proton and neutron knockout of 16O. In particular, we calculate how much $G_s\ne0$ might affect the recently proposed signal for supernova $\nu_\mu$ and $\nu_\tau$ neutrinos in the Superkamiokande detector. We discuss whether Superkamiokande might be able to determine the value of Gs in a hypothetical neutrino-beam experiment. Finally we comment on the possible effect $G_s\ne0$ might have on neutrino-nucleus cross sections in the neutrino-driven wind model for the nuclear r-process.

25.30.Pt Neutrino scattering

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