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Study of production mechanism of universe's baryon number and neutrino masses

Research Project

Project/Area Number 16540230
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe University of Tokyo

Principal Investigator

YANAGIDA Tsutomu  The University of Tokyo, Graduate School of Science, Professor, 大学院理学系研究科, 教授 (10125677)

Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2005: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2004: ¥500,000 (Direct Cost: ¥500,000)
Keywordsneutrino / universe's baryon number / inflation universe / supersymmetry / supergravity / gravitino / ニュートリノの質量
Research Abstract

The seesaw mechanism that explains naturally the observed small neutrino masses predicts heavy Majorana neutrinos. It is known that the decay of the heavy Majorana neutrinos produce lepton asymmetry which is converted to the baryon asymmetry. Thus, one may explain the baryon-number asymmetry in the universe by the decay of the Majorana neutrino decay. In the present project we have shown that it is indeed the case and that the observed neutrino masses are very consistent with the mechanism of the above baryogenesis. In particular, we have considered inflation models based on supergravity and found that most of the inflation models produce too much gravitinos if the above baryogenesis takes place. We have also found that gauge and anomaly mediation scenarios for supersymmetry breaking do not suffer from this problem. Therefore the present baryogenesis scenario based on the decay of heavy Majorana neutrinos predicts certain spectra of super-particles at low energies, which will be tested at the near future collider experiments such as LHC.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (48 results)

All 2007 2006 2005 2004

All Journal Article (48 results)

  • [Journal Article] Possible Signals of Wino LSP at the Large Hadron Collider.2007

    • Author(s)
      M.Ibe, Takeo Moroi, T.T.Yanagida
    • Journal Title

      Physics Letters B 644

      Pages: 355-360

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Possible Signals of Wino LSP at the Large Hadron Collider.2007

    • Author(s)
      M.Ibe, Takeo Moroi, T.T.Yagagida
    • Journal Title

      Physics Letters B,644

      Pages: 355-360

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Spontaneous Non-thermal Leptogenesis in High-scale Inflation Models.2006

    • Author(s)
      Motoi Endo, Fuminobu Takahashi, T. T. Yanagida
    • Journal Title

      Physical Review D 74

      Pages: 123523-123523

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A New Inflation Model with Anomaly-mediated Supersymmetry Breaking.2006

    • Author(s)
      M.Ibe, Y.Shinbara, T.T.Yanagida
    • Journal Title

      Physics Letters B 642

      Pages: 165-170

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Inflaton decay through supergravity effects.2006

    • Author(s)
      Motoi Endo, Masahiro Kawasaki, Fuminobu Takahashi, T. T. Yanagida
    • Journal Title

      Physics Letters B 642

      Pages: 518-524

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Gravitino-overproduction problem in inflationary universe.2006

    • Author(s)
      Masahiro Kawasaki, Fuminobu Takahashi, T. T. Yanagida
    • Journal Title

      Physical Review D 74

      Pages: 43519-43519

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] The Polonyi Problem and Upper bound on Inflation Scale in Supergravity.2006

    • Author(s)
      M.Ibe, Y.Shinbara, T.T.Yanagida
    • Journal Title

      Physics Letters B 639

      Pages: 534-540

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Gravitino overproduction in inflaton decay.2006

    • Author(s)
      Masahiro Kawasaki, Fuminobu Takahashi, T. T. Yanagida
    • Journal Title

      Physics Letters B 638

      Pages: 8-12

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Minimal supergravity, inflation, and all that.2006

    • Author(s)
      M.Ibe, K.-I.Izawa, Y.Shinbara, T.T.Yanagida
    • Journal Title

      Physics Letters B 637

      Pages: 21-26

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Taming the runaway problem of inflationary landscapes.2006

    • Author(s)
      Lawrence J., Hall, Taizan Watari, T.T.Yanagida
    • Journal Title

      Physical Review D 73

      Pages: 103502-103502

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A Higher-dimensional origin of the inverted mass hierarchy for neutrino.2006

    • Author(s)
      M.Tanimoto, T.Yanagida
    • Journal Title

      Physics Letters B 633

      Pages: 567-572

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Testing the see-saw mechanism at collider energies.2006

    • Author(s)
      S.F.King, T.Yanagida
    • Journal Title

      Progress of Theoretical Physics 114

      Pages: 1035-1043

    • NAID

      110002961836

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Spontaneous Non-thermal Leptogenesis in High-scale Inflation Models.2006

    • Author(s)
      Motoi Endo, Fuminobu Takahashi
    • Journal Title

      Physical Review D,74

      Pages: 123523-123523

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A New Inflation Model with Anomaly-mediated Supersymmetry Breaking.2006

    • Author(s)
      M.Ibe, Y.Shinbara, T.T.Yanagida
    • Journal Title

      Physics Letters B,642

      Pages: 165-170

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Inflation decay through supergravity effects.2006

    • Author(s)
      Motoi Endo, Masahiro Kawasaki, Fuminobu Takahashi, T.T.Yanagida
    • Journal Title

      Physics Letters B,642

      Pages: 518-524

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Gravitino-overproduction problem in inflationary universe.2006

    • Author(s)
      Masahiro Kawasaki, Fuminobu Takahashi, T.T.Yanagida
    • Journal Title

      Physical Review D,74

      Pages: 43519-43519

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Polonyi Problem and Upper Bound on Inflation Scale in Supergravity.2006

    • Author(s)
      M.Ibe, Y.Shinbara, T.T.Yanagida
    • Journal Title

      Physics Letters B,639

      Pages: 534-540

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Gravitino overproduction in inflation decay.2006

    • Author(s)
      Masahiro Kawasaki, Fuminobu Takahashi, T.T.Yanagida
    • Journal Title

      Physics Letters B,638

      Pages: 8-12

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Minimal supergravity, inflation, and all that.2006

    • Author(s)
      M.Ibe, K.-I.Izawa, Y.Shinbara, T.T.Yanagida
    • Journal Title

      Physics Letters B,637

      Pages: 21-26

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Taming the runaway problem of inflationary landscapes.2006

    • Author(s)
      Lawrence J.Hall, Taizan Watari, T.T.Yanagida
    • Journal Title

      Physical Review D,73

      Pages: 103502-103502

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A High-dimensional origin of the inverted mass hierarchy for neutrino.2006

    • Author(s)
      M.Tanimoto, T.Yanagida
    • Journal Title

      Physics Letters B,633

      Pages: 567-572

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Polonyi Problem and Upper bound on inflation Scale in Supergravity.2006

    • Author(s)
      Ibe, M., Shinbara, Y., Yanagida, T.T.
    • Journal Title

      Physics Letters B 639

      Pages: 534-540

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Eluding the BBN constraints on the stable gravitino.2006

    • Author(s)
      Buchmuller, W., Hamaguchi, K., Ibe, M., Yanagida, T.T.
    • Journal Title

      Physics Letters B 643

      Pages: 124-126

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A New inflation Model with Anomaly-mediated Supersymmetry Breaking.2006

    • Author(s)
      Ibe, M., Shinbara, Y., Yanagida, T.T.
    • Journal Title

      Physics Letters B 642

      Pages: 165-170

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Spontaneous Non-thermal Leptogenesis in High-scale inflation Models.2006

    • Author(s)
      Endo, Motoi, Takahashi, Fuminobu, Yanagida, T. T.
    • Journal Title

      Physical Review D 74

      Pages: 123523-123523

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A HIGHER-DIMENSIONAL ORIGIN OF THE INVERTED MASS HIERARCHY FOR NEUTRINO.2006

    • Author(s)
      M.Tanaimoto, T.Yanagida
    • Journal Title

      Physics Letters B 633

      Pages: 567-567

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A Gauge-mediation model with a light gravitino of mass 0(10)eV and the messenger dark matter.2005

    • Author(s)
      Masahiro Ibe, Kazuhiro Tobe, Tsutomu Yanagida
    • Journal Title

      Physics Letters B 615

      Pages: 120-126

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Leptogenesis as the origin of matter.2005

    • Author(s)
      W.Buchmuller, R.D.Peccei, T.Yanagida
    • Journal Title

      Annual Review of Nuclear and Particle Science 55

      Pages: 311-355

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Dark matter and baryon asymmetry of the universe in large-cutoff supereravity.2005

    • Author(s)
      M.Ibe, Takeo Moroi, T.Yanagida
    • Journal Title

      Physics Letters B 620

      Pages: 9-16

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A Gauge-mediation model with a light gravitino of mass 0(10) eV and the messenger dark matter.2005

    • Author(s)
      Masahiro Ibe, Kazuhiro Tobe, Tsutomu Yanagida
    • Journal Title

      Physics Letters B,615

      Pages: 120-126

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Dark matter and baryon asymmetry of the universe in large-cutoff supergravity.2005

    • Author(s)
      M.Ibe, Takeo Moroi, T.Yanagida
    • Journal Title

      Physics Letters B,620

      Pages: 9-16

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] DARK MATTER AND BARYON ASYMMETRY OF THE UNIVERSE IN LARGE-CUTOFF SUPERGRAVITY2005

    • Author(s)
      M.Ibe, T.Yanagida
    • Journal Title

      Physics Letters B 620

      Pages: 9-9

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 511-KEV GAMMA RAY FROM MODULI DECAY IN THE GALACTIC BLUGE2005

    • Author(s)
      M.Kawasaki, T.Yanagida
    • Journal Title

      Physics Letters B 624

      Pages: 162-162

    • Related Report
      2005 Annual Research Report
  • [Journal Article] REALIZATION OF MINIMAL SUPERGRAVITY2005

    • Author(s)
      M.Ibe, T.Yanagida
    • Journal Title

      Physical Review D70

      Pages: 35005-35005

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A Solution to the baryon and dark matter coincidence puzzle in a ^~N dominated early universe.2004

    • Author(s)
      M.Ibe, T.Yanagida
    • Journal Title

      Physics Letters B 597

      Pages: 47-56

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Viable supersymmetry and leptogenesis with anomaly mediation.2004

    • Author(s)
      Masahiro Ibe, Ryuichiro Kitano, Hitoshi Murayama, Tsutomu Yanagida
    • Journal Title

      Physical Review D 70

      Pages: 75012-75012

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] GUT phase transition and hybrid inflation.2004

    • Author(s)
      Taizan Watari, T. Yanagida
    • Journal Title

      Physics Letters B 589

      Pages: 71-77

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Neutrino induced lepton flavor violation in gauge mediated supersymmetry breaking.2004

    • Author(s)
      Kazuhiro Tobe, James D.Wells, Tsutomu Yanagida
    • Journal Title

      Physical Review D 69

      Pages: 35010-35010

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Upper bound on gluino mass from thermal leptogenesis.2004

    • Author(s)
      M.Fujii, M.Ibe, T.Yanagida
    • Journal Title

      Physics Letters B 579

      Pages: 6-12

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Thermal leptogenesis and gauge mediation.2004

    • Author(s)
      M.Fujii, M.Ibe, T.Yanagida
    • Journal Title

      Physical Review D 69

      Pages: 15006-15006

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A Solution to the baryon and dark matter coincidence puzzle in a ~N dominated early universe.2004

    • Author(s)
      M.Ibe, T.Inagida
    • Journal Title

      Physics Letters B,597

      Pages: 47-56

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Viable supersymmetry and leptogenesis with anomaly mediation.2004

    • Author(s)
      Masahiro Ibe, Ryuichiro Kitano, Hitoshi Murayama, Tsutomu Yanagida
    • Journal Title

      Physical Review D,70

      Pages: 75012-75012

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] GUT phase transition and hybrid inflation.2004

    • Author(s)
      Taizan Watari, T.Yanagida
    • Journal Title

      Physics Letters B,589

      Pages: 71-77

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Neutrino induced lepton flavor violation in gauge mediated supersymmetry breaking.2004

    • Author(s)
      Kazuhiro Tobe, James D.Wells, Tsutomu Yanagida
    • Journal Title

      Physical Review D,69

      Pages: 35010-35010

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Upper bound on gluino mass from thermal leptogenesis.2004

    • Author(s)
      M.Fujii, M.Ibe, T.Yanagida
    • Journal Title

      Physics Letters B,579

      Pages: 6-12

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Thermal leptogenesis and gauge mediation.2004

    • Author(s)
      M.Fujii, M.Ibe, T.Yanagida
    • Journal Title

      Physical Review D,69

      Pages: 15006-15006

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] VIABLE SUPERSYMMETRY AND LEPTOGENESIS WITH ANOMALY MEDIATION2004

    • Author(s)
      M.Ibe, T.Yanagida
    • Journal Title

      Physical Review D70

      Pages: 75012-75012

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A SOLUTION TO THE BARYON AND DARK MATTER COINCIDENCE PUZZLE IN A ~N DOMINATED NIVERSE2004

    • Author(s)
      M.Ibe, T.Yanagida
    • Journal Title

      Physics Letters B 597

      Pages: 47-47

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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