Constraints on the Tritium Beta Decay and the Neutrinoless Double Beta Decay in the Minimal Seesaw Model

  • We calculate the effective mass terms of the tritium beta decay (〈m〉e) and the neutrinoless double beta decay (〈m〉ee) in the minimal seesaw model with two heavy right-handed Majorana neutrinos. By using current neutrino oscillation data, we obtain the ranges of 〈m〉e and 〈m〉ee for two possible patterns of the neutrino mass spectrum: (1) 0.00424eV≤〈m〉e≤0.0116eV and 0.00031eV≤〈m〉ee≤0.0052eV for the normal neutrino mass hierarchy; (2) 0.0398eV≤〈m〉e≤0.0571eV and 0.0090eV≤〈m〉ee≤0.0571eV for the inverted neutrino mass hierarchy. The sensitivity of 〈m〉ee on the smallest neutrino mixing angle and the Majorana CP-violating phase is also discussed.
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GUO Wan-Lei and XING Zhi-Zhong. Constraints on the Tritium Beta Decay and the Neutrinoless Double Beta Decay in the Minimal Seesaw Model[J]. Chinese Physics C, 2006, 30(8): 709-713.
GUO Wan-Lei and XING Zhi-Zhong. Constraints on the Tritium Beta Decay and the Neutrinoless Double Beta Decay in the Minimal Seesaw Model[J]. Chinese Physics C, 2006, 30(8): 709-713. shu
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Received: 2006-02-14
Revised: 1900-01-01
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Constraints on the Tritium Beta Decay and the Neutrinoless Double Beta Decay in the Minimal Seesaw Model

    Corresponding author: XING Zhi-Zhong,
  • Institute of High Energy Physics, CAS, Beijing 100049, China

Abstract: We calculate the effective mass terms of the tritium beta decay (〈m〉e) and the neutrinoless double beta decay (〈m〉ee) in the minimal seesaw model with two heavy right-handed Majorana neutrinos. By using current neutrino oscillation data, we obtain the ranges of 〈m〉e and 〈m〉ee for two possible patterns of the neutrino mass spectrum: (1) 0.00424eV≤〈m〉e≤0.0116eV and 0.00031eV≤〈m〉ee≤0.0052eV for the normal neutrino mass hierarchy; (2) 0.0398eV≤〈m〉e≤0.0571eV and 0.0090eV≤〈m〉ee≤0.0571eV for the inverted neutrino mass hierarchy. The sensitivity of 〈m〉ee on the smallest neutrino mixing angle and the Majorana CP-violating phase is also discussed.

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