Lepton-number-violating decays of singly-charged Higgs bosons in the type-(Ⅰ+Ⅱ ) seesaw model |
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引用本文: | 任凭,邢志忠.Lepton-number-violating decays of singly-charged Higgs bosons in the type-(Ⅰ+Ⅱ ) seesaw model[J].中国物理 C,2010,34(4):433-443. |
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作者姓名: | 任凭 邢志忠 |
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作者单位: | Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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基金项目: | Supported by National Natural Science Foundation of China (10425522) |
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摘 要: | The lepton-number-violating decays of singly-charged Higgs bosons H^± are investigated in the minimal type-( Ⅰ+Ⅱ ) seesaw model with one SU(2)L Higgs triplet △ and one heavy Majorana neutrino N1 at the TeV scale. We find that the branching ratios B(H^+ → 1α^+υ^-) (for α = e,μ,τ) depend not only on the mass and mixing parameters of three light neutrinos υi (for i = 1, 2, 3) but also on those of N1. Assuming that the mass of N1 lies in the range of 200 GeV to 1 TeV, we figure out the generous interference bands for the contributions of υi and N1 to B(H^+→ 1α^+υ^-). We illustrate some salient features of such interference effects by considering three typical mass patterns of υi, and show that the relevant Majorana CP-violating phases can affect the magnitudes of B(H^+→ 1α^+υ^-)) in this parameter region.
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关 键 词: | 希格斯玻色子 板模型 轻子 衰变 TeV能区 混合参数 干预模式 中微子 |
收稿时间: | 2009-5-21 |
修稿时间: | 2009-6-15 |
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