Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible Precise Neutrino Unitarity?   The exploration of the Standard Model (SM) leptonic mixing has been led by
the study of the neutrino ({\nu}) oscillations phenomenon, whose discovery was
acknowledged by the 2015 Nobel prize in physics. Half a century of experimental
and theoretical effort has established and demonstrated consistency with the
3{\nu} model and with the so far SM three family evidence. While no direct
significant manifestation for physics beyond the Standard Model (BSM) has been
found, the SM is known not to suffice to explain all today's observed
phenomenology. In the forthcoming decade, most oscillation parameters are
expected to yield sub-percent precision. Such a knowledge opens the possibility
to experimentally test for BSM manifestation(s) via the direct and competitive
exploration of the PMNS matrix unitarity for the first time. Any significant
deviation might, in turn, evidence the existence of non-standard states (i.e.
new neutrino) and/or interactions, thus allowing for direct discovery
potential. Even if no deviations were found, the PMNS matrix structure, very
different from its CKM counterpart, is of fundamental importance to our
understanding of the leptonic flavour sector. In this document, we shall
briefly review today's PMNS unitarity status in the context of existing and
future particle physics programme within the next decade. We identify the
possible need for a missing experiment(s). One such a case maybe a hypothetical
Super Chooz, employing the novel LiquidO technology, to address both directly
sensitivity to the unitarity and unique impact to the exploration of the
neutrino oscillation phenomena. Such a program is expected to additionally and
coherently reinforce the physics of all currently planned experiments via
indirect information aiding both the CP violation and mass ordering forthcoming
measurements.

11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an