Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutrino Mixing from $\Delta(6n^2)$ Groups   Experimentally viable lepton mixing parameters can be predicted in so-called
direct flavour models with Majorana neutrinos using $\Delta(6n^2)$ groups as a
flavour group. In direct models, in which the flavour group is broken to a
$Z_2\times Z_2$ subgroup in the neutrino sector, mixing angles and Dirac CP
phase are purely predicted from symmetry. General predictions of direct models
with $\Delta(6n^2)$ flavour groups are that all mixing angles are fixed up to a
discrete choice and that the Dirac CP phase is $0$ or $\pi$; Furthermore, the
middle column of the mixing matrix is trimaximal which yields the sum rule
$\theta_{23}=45^\circ \mp \theta_{13}/\sqrt{2}$ depending on the Dirac phase.
These predictions of lepton mixing parameters are compatible with recent global
fit results or will be tested experimentally in the near future. It is the
first time that such predictions have been obtained model-independently for an
infinite series of groups.

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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: physics
2
The categories of this paper are: math
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: adap-org