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Título

Insensitivity of leptogenesis with flavor effects to low energy leptonic CP violation

Autor Davidson, Sacha; Garayoa, Julia ; Palorini, Federica; Rius, Nuria
Palabras clave Standard Model
Baryogenesis
Bridge
[PACS] Non-standard-model neutrinos, right-handed neutrinos, etc.
[PACS] Global symmetries (e.g., baryon number, lepton number) in particles and fields
[PACS] Neutrino interactions
[PACS] Neutrino mass and mixing
Fecha de publicación 18-oct-2007
EditorAmerican Physical Society
Citación Physical Review Letters 99(16): 161801 (2007)
ResumenIf the baryon asymmetry of the Universe is produced by leptogenesis, CP violation is required in the lepton sector. In the seesaw extension of the standard model with three hierarchical right-handed neutrinos, we show that the baryon asymmetry is insensitive to the Pontecorvo-Maki-Nagakawa-Sakata phases: thermal leptogenesis can work for any value of the observable phases. This result was well known when there were no flavor effects in leptogenesis; we show that it remains true when flavor effects are included.
Descripción 4 pages, 1 figure.-- PACS nrs.: 14.60.St; 11.30.Fs; 13.15.+g; 14.60.Pq.-- ISI Article Identifier: 000250296000016.-- ArXiv pre-print available at: http://arxiv.org/abs/0705.1503
Versión del editorhttp://dx.doi.org/10.1103/PhysRevLett.99.161801
URI http://hdl.handle.net/10261/9165
DOI10.1103/PhysRevLett.99.161801
ISSN0031-9007
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