Parity violating radiative emission of neutrino pairs in heavy alkaline earth atoms of even isotopes

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    Abstract

    Metastable excited states P32,P30 of heavy alkaline earth atoms of even isotopes are studied for parity violating (PV) effects in radiative emission of neutrino pair (RENP). PV terms arise from interference between two diagrams containing neutrino pair emission of valence spin current and nuclear electroweak charge density proportional to the number of neutrons in nucleus. This mechanism gives large PV effects, since it does not suffer from the suppression of 1/(electronmass) usually present for nonrelativistic atomic electrons. A controllable magnetic field is crucial to identify RENP process by measuring PV observables. Results of PV asymmetries under the magnetic field reversal and the photon circular polarization reversal are presented for an example of Yb atom.

    Original languageEnglish
    Article number013022
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume90
    Issue number1
    DOIs
    Publication statusPublished - Jul 28 2014

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Physics and Astronomy (miscellaneous)

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