Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Confusing non-zero theta_13 with non-standard interactions in the solar
  neutrino sector   Solar and KamLAND data are in slight tension when interpreted in the standard
two-flavor oscillations framework and this may be alleviated allowing for a
non-zero value of the mixing angle theta_13. Here we show that, likewise,
non-standard flavor-changing interactions (FCI), possibly intervening in the
propagation of solar neutrinos, are equally able to alleviate this tension and
therefore constitute a potential source of confusion in the determination of
theta_13. By performing a full three-flavor analysis of solar and KamLAND data
in presence of FCI we provide a quantitative description of the degeneracy
existing between theta_13 and the vectorial coupling eps_e\tau^dV
characterizing the non-standard transitions between nu_e and nu_tau in the
forward scattering process with d-type quarks. We find that couplings with
magnitude eps_e\tau^dV ~ 10%, compatible with the existing bounds, can mimic
the non-zero values of theta_13 indicated by the latest analyses.

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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph