Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kinetic mixing between a Higgs and a nearly degenerate Dark scalar:
  oscillations and displaced vertices   Extensions beyond the Standard Model allow for a gauge singlet scalar to be
kinetically coupled with the Higgs. We consider kinetic mixing between a Dark
scalar gauge singlet \emph{nearly degenerate} with the Higgs, focusing on the
\emph{dynamical} aspects of the mixing phenomena. The renormalization program
is carried out by obtaining the one-loop effective action which yields an
effective non-hermitian Hamiltonian to study the dynamics of mixing. The scalar
Higgs becomes a coherent superposition of the mass eigenstates, thus kinetic
mixing leads to oscillations and common decay channels in striking similarity
with neutral meson mixing. Near degeneracy yields an \emph{enhancement} of the
kinetic coupling. For small kinetic mixing we find that the mass eigenstates
feature different lifetimes which result in a wide separation of time scales of
evolution along with important coherence aspects from Dark scalar-Higgs
interference. The wide separation of scales is manifest as displaced decay
vertices which could potentially be a telltale experimental signal of kinetic
mixing.

9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg