eV Seesaw with Four Generations

Abstract

We extend the eV seesaw scenario to four lepton generations. The LSND anomaly is taken as the right-handed seesaw scale, i.e. m_R ~ eV. The fourth generation then gives a heavy pseudo-Dirac neutrino which largely decouples from other generations, and is relatively stable. One effectively has a 3+3 solution to the LSND anomaly, where we illustrate with numerical solutions. Our study indicates that the third mixing angle sin^2(theta13) is likely less than 0.01.

Some minor corrections, 3 updated figures. Results and conclusions are mildly changed. To appear in Phys. Lett. B

References in corpus (4)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• See-Saw Energy Scale and the LSND Anomaly
• Some Aspects of Thermal Leptogenesis
• The Fourth SM Family Neutrino at Future Linear Colliders

Cited by in corpus (3)

• Flavor Changing Neutral Currents involving Heavy Quarks with Four Generations
• Neutrino Masses and a Fourth Generation of Fermions
• An Updated Numerical Analysis of eV Seesaw with Four Generations