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Updated: Nov 12, 2025
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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
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The minimal seesaw and leptogenesis models
Zhi-Zhong Xing1, Zhen-Hua Zhao2
1Institute of High Energy Physics and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
Summary
The minimal seesaw mechanism, a simplified model for neutrino mass, is nearing experimental verification. This review explores its flavor structures and implications for leptogenesis, CP violation, and the universe's matter-antimatter asymmetry.
Area of Science:
- Particle Physics
- Cosmology
- Astroparticle Physics
Background:
- The minimal seesaw mechanism offers a simplified approach to explaining neutrino masses.
- This model is increasingly amenable to direct experimental testing.
- Leptogenesis provides a potential explanation for the observed matter-antimatter asymmetry in the universe.
Purpose of the Study:
- To provide an updated review of the minimal seesaw mechanism and its associated leptogenesis.
- To examine phenomenological aspects, focusing on flavor structures.
- To compare predictions with current neutrino oscillation and cosmological data.
Main Methods:
- Review of theoretical frameworks for the minimal seesaw and leptogenesis.
- Analysis of flavor structures within these models.
- Confrontation of model predictions with experimental and observational data.
Main Results:
- The minimal seesaw mechanism, with specific flavor structures, can be constrained by current data.
- Leptogenesis within this framework offers insights into CP violation and lepton number violation.
- The interplay between neutrino physics and cosmology is highlighted.
Conclusions:
- The minimal seesaw mechanism is a viable framework for understanding neutrino properties and early universe cosmology.
- Further investigation into discrete flavor symmetries and lepton flavor violation is warranted.
- Experimental and cosmological data are crucial for probing these fundamental physics scenarios.
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