Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Trimaximal mixing with predicted \theta_13 from a new type of
  constrained sequential dominance   Following the recent T2K indication of a sizeable reactor angle, we present a
class of models which fix \theta_{13} while preserving trimaximal solar mixing.
The models are based on a new type of constrained sequential dominance
involving new vacuum alignments, along the (1,2,0)^T or (1,0,2)^T directions in
flavour space. We show that such alignments are easily achieved using
orthogonality, and may replace the role of the subdominant flavon alignment
(1,1,1)^T in constrained sequential dominance. In such models, with a normal
hierarchical spectrum, the reactor angle is related to a ratio of neutrino
masses by \theta_{13} = \frac{\sqrt{2}}{3}\frac{m^\nu_2}{m^\nu_3}, leading to
\theta_{13} \sim 5^\circ - 6^\circ, while the atmospheric angle is given by the
sum rule \theta_{23} \approx 45^\circ + \sqrt{2} \theta_{13} \cos \delta. We
find that leptogenesis is unsuppressed due to the violation of form dominance
and that the CP violating phase responsible for leptogenesis is precisely equal
to the Dirac CP phase \delta, providing a direct link between leptogenesis and
neutrino mixing in this class of models.

33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex