Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Realistic Dirac leptogenesis.

Hitoshi Murayama1, Aaron Pierce

  • 1Department of Physics, University of California, Berkeley, CA 94720, USA.

Physical Review Letters
|January 7, 2003
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reporting and methodological quality of systematic reviews underpinning clinical practice guidelines for low back pain: a meta-epidemiological study.

Frontiers in pain research (Lausanne, Switzerland)·2025
Same author

An analysis of patient-reported outcomes among epidural steroid injection clinical trials.

Regional anesthesia and pain medicine·2025
Same author

Observing cosmic-ray extensive air showers with a silicon imaging detector.

Scientific reports·2023
Same author

An evaluation of reporting guidelines and Clinical Trial Registry requirements among anesthesiology journals.

Journal of evidence-based medicine·2023
Same author

Thermal Dark Matter from Freeze-Out of Inverse Decays.

Physical review letters·2023
Same author

Maximizing Direct Detection with Highly Interactive Particle Relic Dark Matter.

Physical review letters·2023
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

This study introduces a novel leptogenesis model preserving lepton number. It explains the small neutrino Yukawa couplings and the universe's baryon asymmetry without requiring Majorana neutrinos.

Area of Science:

  • Particle Physics
  • Cosmology
  • Astroparticle Physics

Background:

  • Leptogenesis is a leading mechanism for explaining the observed baryon asymmetry in the universe.
  • Traditional models often require neutrinos to be Majorana particles to generate this asymmetry.
  • The smallness of neutrino Yukawa couplings is a long-standing puzzle in particle physics.

Purpose of the Study:

  • To present a new theoretical model for leptogenesis.
  • To demonstrate that lepton number can be preserved in leptogenesis.
  • To show that neutrinos need not be Majorana for baryogenesis.

Main Methods:

  • Development of a theoretical particle physics model.
  • Analysis of CP violation from decaying particles.
  • Investigation of neutrino Yukawa coupling origins.

Related Experiment Videos

Main Results:

  • A leptogenesis model that preserves lepton number is proposed.
  • The model explains both the baryon asymmetry and small neutrino Yukawa couplings.
  • CP violation arises from decaying particles, consistent with traditional scenarios.

Conclusions:

  • Leptogenesis can occur without violating lepton number conservation.
  • Neutrino nature (Dirac vs. Majorana) is not a prerequisite for explaining the baryon asymmetry.
  • This model offers an alternative to standard leptogenesis frameworks.