Generation of Large Lepton Asymmetries

Details Generation of Large Lepton Asymmetries Generation of Large Lepton Asymmetries

1997-09-08

arxiv.org/abs/hep-ph/9709289v2

Nucl.Phys. B538 (1999) 297-308

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pp., LaTex file plus one figure, added some references in the introduction

Scientific paper

10.1016/S0550-3213(98)00606-3

We present here a realistic model to produce a very large lepton asymmetry L of 0.1 to 1, without producing a large baryon asymmetry. The model is based on the Affleck and Dine scenario, in which the field acquiring a large vacuum expectation value during inflation is a s-neutrino right. We require $L$ to be large enough for the electroweak symmetry to be spontaneously broken at all temperatures after inflation, with the consequent suppression of sphaleron transitions.

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