Nucleon decay in GUT and nonGUT SUSY models

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I first emphasize the importance of searching for nucleon decay in the context of supersymmetric models. The status of minimal SUSY SU(5) model is reviewed, which can be definitively ruled out by a combination of superKamiokande andLEP-2 experiments. Non-minimal models may provide some suppression in the nucleon decay rates, but there is still a good chance for superKamiokande. I point out that the operators suppressed even by the Planck-scale are too large. We need a suppression mechanism for the operators at the level of 10-7, and the mechanism, I argue, may well be a flavor symmetry. A particular example predicts ... continued below

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Murayama, Hitoshi June 30, 1996.

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I first emphasize the importance of searching for nucleon decay in the context of supersymmetric models. The status of minimal SUSY SU(5) model is reviewed, which can be definitively ruled out by a combination of superKamiokande andLEP-2 experiments. Non-minimal models may provide some suppression in the nucleon decay rates, but there is still a good chance for superKamiokande. I point out that the operators suppressed even by the Planck-scale are too large. We need a suppression mechanism for the operators at the level of 10-7, and the mechanism, I argue, may well be a flavor symmetry. A particular example predicts p --> K0e+ to be the dominant mode which does not arise in GUT models.

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  • 28th International Conference on High-energy Physics , Warsaw, Poland, 25-31 Jul 1996

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  • Report No.: LBNL-39484
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 964304
  • Archival Resource Key: ark:/67531/metadc934617

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  • June 30, 1996

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 18, 2016, 3:03 p.m.

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Murayama, Hitoshi. Nucleon decay in GUT and nonGUT SUSY models, article, June 30, 1996; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc934617/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.