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Analytical treatment of long-term observations of the day-night asymmetry for solar neutrinosстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 7 июля 2016 г.
- Авторы: Aleshin S.S., Kharlanov O.G., Lobanov A.E.
- Журнал: Physical Review D
- Том: 87
- Номер: 4
- Год издания: 2013
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 045025
- DOI: 10.1103/PhysRevD.87.045025
- Аннотация: The Earth’s density distribution can be approximately considered piecewise continuous at the scale of two-flavor oscillations of typical solar neutrinos, such as the beryllium-7 and boron-8 neutrinos. This quite general assumption appears to be enough to analytically calculate the day-night asymmetry factor for such neutrinos. Using the explicit time averaging procedure, we show that, within the leading-order approximation, this factor is determined by the electron density within about one oscillation length under the detector, namely, in the Earth’s crust (and upper mantle for high-energy neutrinos). We also evaluate the effect of the inner Earth’s structure on the observed asymmetry and show that it is suppressed and mainly comes from the neutrinos observed near the winter and summer solstices. As a result, we arrive at the strict interval constraint on the asymmetry, which is valid within quite a wide class of Earth models.
- Добавил в систему: Харланов Олег Георгиевич