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
Volume90
Issue number1
DOIs
Publication statusPublished - Jul 28 2014

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parity
neutrinos
isotopes
atoms
circular polarization
magnetic fields
diagrams
asymmetry
retarding
valence
interference
neutrons
nuclei
photons
excitation
electrons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

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title = "Parity violating radiative emission of neutrino pairs in heavy alkaline earth atoms of even isotopes",
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.",
author = "Motohiko Yoshimura and Noboru Sasao and Satoshi Uetake",
year = "2014",
month = "7",
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doi = "10.1103/PhysRevD.90.013022",
language = "English",
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T1 - Parity violating radiative emission of neutrino pairs in heavy alkaline earth atoms of even isotopes

AU - Yoshimura, Motohiko

AU - Sasao, Noboru

AU - Uetake, Satoshi

PY - 2014/7/28

Y1 - 2014/7/28

N2 - 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.

AB - 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.

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