{
  "id": "1104.2654",
  "version": "v4",
  "published": "2011-04-14T02:27:34.000Z",
  "updated": "2012-04-17T17:46:27.000Z",
  "title": "Common Origin of mu-tau and CP Breaking in Neutrino Seesaw, Baryon Asymmetry, and Hidden Flavor Symmetry",
  "authors": [
    "Hong-Jian He",
    "Fu-Rong Yin"
  ],
  "comment": "67pp, 16 figs, attached \"Note Added-2\" (and Figs.14-16) for update with new data of Daya Bay and RENO in spring 2012. v2: PRD version, attached \"Note Added in Proof\" to highlight our prediction of a relatively large theta_13, this is *prior to* the new data from T2K and MINOS which further support our theory prediction",
  "journal": "Phys.Rev.D84:033009,2011",
  "doi": "10.1103/PhysRevD.84.033009",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "We conjecture that all CP violations (both Dirac and Majorana types) arise from a common origin in neutrino seesaw. With this conceptually attractive and simple conjecture, we deduce that mu-tau breaking shares the common origin with all CP violations. We study the common origin of mu-tau and CP breaking in the Dirac mass matrix of seesaw Lagrangian (with right-handed neutrinos being mu-tau blind), which uniquely leads to inverted mass-ordering of light neutrinos. We then predict a very different correlation between the two small mu-tau breaking observables theta_{13}-0 and theta_{23}-45, which can saturate the present experimental upper limit on theta_{13}. This will be tested against our previous normal mass-ordering scheme by the on-going oscillation experiments. We also analyze the correlations of theta_{13} with Jarlskog invariant and neutrinoless double-beta-decay observable. From the common origin of CP and mu-tau breaking in the neutrino seesaw, we establish a direct link between the low energy CP violations and the cosmological CP violation for baryon asymmetry. With these we further predict a lower bound on theta_{13}, supporting the on-going probes of theta_{13} at Daya Bay, Double Chooz and RENO experiments. Finally, we analyze the general model-independent Z_2 x Z_2 symmetry structure of the light neutrino sector, and map it into the seesaw sector, where one of the Z_2's corresponds to the mu-tau symmetry and another the hidden symmetry Z_2^s (revealed in our previous work) which dictates the solar mixing angle \\theta_{12}. We derive the physical consequences of this Z_2^s and its possible partial violation in the presence of mu-tau breaking (without or with neutrino seesaw), regarding the theta_{12} determination and the correlation between mu-tau breaking observables.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2012-04-17T17:46:27.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "14.60.Pq",
      "12.15.Ff",
      "13.40.Em",
      "13.15.+g"
    ],
    "keywords": [
      "common origin",
      "neutrino seesaw",
      "hidden flavor symmetry",
      "baryon asymmetry",
      "cp breaking"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2011,
      "month": "Aug",
      "volume": 84,
      "number": 3,
      "pages": "033009"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 67,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 896226,
      "adsabs": "2011PhRvD..84c3009H"
    }
  }
}