Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Loop effect in the coherent neutrino-nucleus scattering   A connection between the neutrino and an exotic fermion is described in the
general neutrino model. In this model the neutrinos can convert into the new
fermion and thus the interaction leads to novel recoil spectrum in the neutrino
scattering experiments. We study the general neutrino interaction by evaluating
both the tree-level and loop-level contributions to the coherent elastic
neutrino-nucleus scattering. We illustrate the scattering by taking the
framework of a simplified neutrino model with a Dirac fermion $\chi$ and a
spin-0 mediator. For the CP phase in the quark sector being 0 and $\pi/2$, the
detection processes are dominated by the tree-level and loop-level
contribution, respectively. We investigate the constraints on the couplings
between the mediator and the new particle $\chi$ or the quarks by fitting to
the COHERENT data. The parameter space with $m_\chi$ larger than the maximal
energy of incoming neutrinos can be also constrained by including the
loop-level contribution.

5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math