Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Leptogenesis from Bilinear R-parity Violating Couplings   We reexamine the idea that bilinear R-parity violating couplings can be
responsible for leptogenesis. We prove that, to have lepton number violation
before the electroweak phase transition, misalignment between the
lepton-Higgsino and slepton-Higgs sectors must be involved. The processes that
generate a lepton asymmetry are bino or wino decays into a lepton-Higgs and
slepton-Higgsino final states. Since these decays occur mainly while the
gauginos are still in thermal equilibrium, they quantitatively fail to produce
the observed baryon asymmetry of the universe.

18
The categories of this paper are: econ
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an