Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Resolving the Dark LMA Solution at Neutrino Oscillation Experiments   In presence of non standard interactions, the solar neutrino data is
consistent with two solutions, one close to the standard LMA solution with
$\sin^2\theta_{12} \simeq 0.3$ and another with $\sin^2\theta_{12}^D \simeq
0.7(=\cos^2\theta_{12})$. The latter has been called the Dark LMA (DLMA)
solution in the literature. This issue is hard to resolve via oscillations
because of the existence of the so-called "generalised mass hierarchy"
degeneracy of the neutrino mass matrix in presence of NSI. However, if the mass
hierarchy is independently determined in a non-oscillation experiment such as
neutrino-less double beta decay, the invariance of neutrino oscillation
probabilities under $\sin^2\theta_{12} \leftrightarrow \cos^2\theta_{12}$ is
lost and the possibility of resolving the LMA vs DLMA opens up. We point out
that the $P_{\mu\mu}$ channel can distinguish $\theta_{12}$ from
$\theta_{12}^D$ and study the corresponding difference in long-baseline
experiments. We show that a key ingredient required is the input from the
$P_{ee}$ channel measured at a reactor experiment. We find that if the mass
hierarchy is determined by neutrino-less double beta decay, then a combined
measurement of the effective mass squared differences in long-baseline
experiments such as T2HK and DUNE and reactor experiment such as JUNO can
resolve the DLMA conundrum to better than $3\sigma$ within 1 year for T2HK and
little more than 3 years for DUNE.

22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
17
The categories of this paper are: q-fin