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  • 标题:Radiatively Generated Leptogenesis in <svg style="vertical-align:-4.50008pt;width:23.1625px;" id="M1" height="20.700001" version="1.1" viewBox="0 0 23.1625 20.700001" width="23.1625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.7)"> <g transform="translate(72,-55.44)"> <text transform="matrix(1,0,0,-1,-71.95,59.97)"> <tspan style="font-size: 17.93px; " x="0" y="0">𝑆</tspan> </text> <text transform="matrix(1,0,0,-1,-60.29,55.49)"> <tspan style="font-size: 12.55px; " x="0" y="0">𝟒</tspan> </text> </g> </g> </svg> Flavor Symmetry Models
  • 本地全文:下载
  • 作者:T. Phong Nguyen ; P. V. Dong
  • 期刊名称:Advances in High Energy Physics
  • 印刷版ISSN:1687-7357
  • 电子版ISSN:1687-7365
  • 出版年度:2012
  • 卷号:2012
  • DOI:10.1155/2012/254093
  • 出版社:Hindawi Publishing Corporation
  • 摘要:We study how leptogenesis can be implemented in the seesaw models with 𝑆4 flavor symmetry, which lead to the tri-bimaximal neutrino mixing matrix. By considering renormalization group evolution from a high-energy scale of flavor symmetry breaking (the GUT scale is assumed) to the low-energy scale of relevant phenomena, the off-diagonal terms in a combination of Dirac Yukawa-coupling matrix can be generated and the degeneracy of heavy right-handed neutrino Majorana masses can be lifted. As a result, the flavored leptogenesis is successfully realized. We also investigate how the effective light neutrino mass |⟨𝑚𝑒𝑒⟩| associated with neutrinoless double beta decay can be predicted along with the neutrino mass hierarchies by imposing the experimental data on the low-energy observables. We find a link between the leptogenesis and the neutrinoless double beta decay characterized by |⟨𝑚𝑒𝑒⟩| through a high-energy CP phase &#x3d5;, which is correlated with the low-energy Majorana CP phases. It is shown that the predictions of |⟨𝑚𝑒𝑒⟩| for some fixed parameters of the high-energy physics can be constrained by the current observation of baryon asymmetry.
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