• Flavour democracy calls for the fourth generation

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    • Keywords


      Fermion mass hierarchy; CKM matrix: fourth generation; flavour democracy; neutrino mass problem

    • Abstract


      It is argued with the help of an illustrative model, that the inter species hierarchy among the fermion masses and the quark mixing angles can be accommodated naturally in the standard model with (approximate) flavor democracy provided there are three exactly massless neutrinos and four families of sequential quark-leptons with all members of the fourth family having roughly equal masses. The special problem of light neutrino masses (if any) and possible solutions are also discussed.

    • Author Affiliations


      Amitava Datta1

      1. Physics Department, Jadavpur University, Calcutta - 700 032, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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