Il Nuovo Cimento C

, Volume 9, Issue 1, pp 17–26

Resonant amplification of ν oscillations in matter and solar-neutrino spectroscopy

  • S. P. Mikheyev
  • A. Yu. Smirnov
Article
  • 431 Downloads

Summary

For small mixing angles θ the amplification of ν oscillations in matter has the resonance form (resonance in neutrino energy or matter density). In the Sun resonance effect results in nontrivial changing (suppression) of ν-flux for a wide range of neutrino parameters Δm2=(3·10−4÷10−8) (eV)2, sin22θ>10−4.

PACS. 94.40

Cosmic rays PACS. 96.60.Kx Solar interior (including neutrino problem) 

Riassunto

Per piccoli angoli di mescolanemto θ l’amplificazione delle oscillazioni neutriniche nella materia ha la forma di risonanza (risonanza nell’energia neutrinica o densità di materia). Nel sole l’effetto di risonanza produce un cambiamento non banale (soppressione) del flusso di neutrini per un’ampia gamma di parametri neutrinici Δm2=3·10−4÷10−8 (eV)2, sin22θ>10−4.

Резюме

Для малых угдов смешивания усиление ν ссцилльций в веществе имеет резонансную форму (резонанс по энергии нейтрино ило плотности вещества). В Солнце резонансный эффект приводит к сложному изменению (подавлению) ν-потока для широкого диапазна нейтринных параметров: Δm2-3·(10−4÷10−8) эВ2, sin22θ>10−4.

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Copyright information

© Società Italiana di Fisica 1986

Authors and Affiliations

  • S. P. Mikheyev
    • 1
  • A. Yu. Smirnov
    • 1
  1. 1.Institute for Nuclear Research of Academy of SciencesMoscowUSSR

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