III II I Relations between masses and mixing angles.

Präsentation zum Thema: "III II I Relations between masses and mixing angles."—  Präsentation transkript:

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5 III II I

6 Relations between masses and mixing angles

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9 III II I

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24 Ewigkeit ist lang, speziell gegen dem Ende zu.W.A.Ewigkeit ist lang, speziell gegen dem Ende zu.W.A.

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28 What type of mass term? How big or small are masses? How big are the mixing angles? Relations among angles and masses?

29 Neutrino Masses: Mass terms for charged leptons and neutrinos are not parallel  Neutrino Mixing

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33 Neutrino mixing V=UxP

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36 Observation:

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40 m(1) = 0.0036 … 0.0059 eV m(2) = 0.0085 … 0.0140 eV m(3) = 0.044 … 0.058 eV

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42 Neutrino masses less hierarchical than the masses of the charged leptons

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57 Neutrinoless Double Beta Decay

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60 Conclude: Fermion masses remain a mystery. Neutrino masses might be Dirac masses or Majorana masses. Mixing angles for quarks are fixed by ratios of quark masses. Very good agreement with experiment.

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62 This works also well for leptons. One finds, using the observed mass differences: m(1)/m(2)=0.42, m(2)/m(3)=0.19. m(1): 0.0041 eV m(2): 0.0097 eV m(3): 0.051 eV

63 Atmospheric angle about 40 degrees Neutrinoless double beta decay: difficult

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