Reduction of neutrino-nucleon scattering rate by nucleon-nucleon collisions

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We studied possible modifications of the neutrino-nucleon scattering rate due to the nucleon-nucleon collisions in the hot dense matter which we find in the supernova core. We show that the finite width of the nucleon spectral function induced by the nucleon collisions leads to a broadening of the dynamical spin structure function of the nucleon, resulting in a reduction of the rate of neutrino-nucleon scattering via the axial vector current and making the energy exchange between neutrinos and nucleons easier. The reduction rate is relatively large, ∼ 0.6, even at density ∼ 1013g/cm3 and could have a significant impact on the dynamics of the collapse-driven supernova as well as the cooling of the proto neutron star.

Original languageEnglish
Pages (from-to)219-232
Number of pages14
JournalNuclear Physics A
Volume662
Issue number1-2
Publication statusPublished - 2000 Jan 3
Externally publishedYes

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neutrinos
collisions
supernovae
scattering
vector currents
nucleons
neutron stars
energy transfer
cooling

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Reduction of neutrino-nucleon scattering rate by nucleon-nucleon collisions. / Yamada, Shoichi.

In: Nuclear Physics A, Vol. 662, No. 1-2, 03.01.2000, p. 219-232.

Research output: Contribution to journalArticle

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