TY  - JOUR
AU  - Buchmuller, Wilfried
AU  - Di Bari, P.
AU  - Plumacher, M.
TI  - Leptogenesis for pedestrians
JO  - Annals of physics
VL  - 315
IS  - 2
SN  - 0003-4916
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - PUBDB-2017-06927
M1  - hep-ph/0401240
M1  - DESY-03-100
M1  - UAB-FT-551
M1  - CERN-TH-2003-199
SP  - 305 - 351
PY  - 2005
N1  - Forschung Hochenergiephysik; Theorie
AB  - During the process of thermal leptogenesis temperature decreases by about one order of magnitude while the baryon asymmetry is generated. We present an analytical description of this process so that the dependence on the neutrino mass parameters becomes transparent. In the case of maximal CP asymmetry all decay and scattering rates in the plasma are determined by the mass M_1 of the decaying heavy Majorana neutrino, the effective light neutrino mass tildem_1 and the absolute mass scale barm of the light neutrinos. In the mass range suggested by neutrino oscillations, m_sol  8*10^-3 eV  _1  m_atm  5*10^-2 eV, leptogenesis is dominated just by decays and inverse decays. The effect of all other scattering processes lies within the theoretical uncertainty of present calculations. The final baryon asymmetry is dominantly produced at a temperature T_B which can be about one order of magnitude below the heavy neutrino mass M_1. We also derive an analytical expression for the upper bound on the light neutrino masses implied by successful leptogenesis.
KW  - lepton: production (INSPIRE)
KW  - temperature (INSPIRE)
KW  - baryon: asymmetry (INSPIRE)
KW  - neutrino: mass (INSPIRE)
KW  - CP: violation (INSPIRE)
KW  - neutrino: heavy (INSPIRE)
KW  - neutrino: Majorana (INSPIRE)
KW  - neutrino: decay modes (INSPIRE)
KW  - neutrino: oscillation (INSPIRE)
KW  - neutrino: production (INSPIRE)
KW  - Boltzmann equation (INSPIRE)
KW  - numerical calculations (INSPIRE)
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000227042400001
DO  - DOI:10.1016/j.aop.2004.02.003
UR  - https://bib-pubdb1.desy.de/record/330435
ER  -