Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Baryogenesis from Cosmic Strings at the Electroweak Scale   We explore the viability of baryogenesis from light scalar decays after the
electroweak phase transition. A minimal model of this kind is constructed with
new CP violating interactions involving a heavy fourth family. The departure
from thermal equilbrium must come from topological defects like cosmic strings,
and we show that almost any mechanism for producing the cosmic strings at the
electroweak scale results in a viable theory. Baryogenesis occurs in the fourth
generation but the baryon number is later transported to the visible
generations. This mechanism of indirect baryogenesis allows us to satisfy
experimental limits on the proton lifetime while still having perturbative
baryon number violation at low energies. The fourth family has very small
mixing angles which opens the possibility of distinct observable signatures in
collider experiments.

18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio