Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards a complete theory of thermal leptogenesis in the SM and MSSM   We perform a thorough study of thermal leptogenesis adding finite temperature
effects, RGE corrections, scatterings involving gauge bosons and by properly
avoiding overcounting on-shell processes. Assuming hierarchical right-handed
neutrinos with arbitrary abundancy, successful leptogenesis can be achieved if
left-handed neutrinos are lighter than 0.15 eV and right-handed neutrinos
heavier than 2 10^7 GeV (SM case, 3sigma C.L.). MSSM results are similar.
  Furthermore, we study how reheating after inflation affects thermal
leptogenesis. Assuming that the inflaton reheats SM particles but not directly
right-handed neutrinos, we derive the lower bound on the reheating temperature
to be T_RH > 2 10^9 GeV. This bound conflicts with the cosmological gravitino
bound present in supersymmetric theories. We study some scenarios that avoid
this conflict: `soft leptogenesis', leptogenesis in presence of a large
right-handed (s)neutrino abundancy or of a sneutrino condensate.

11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn