Neutrino oscillations: measuring θ13 including its sign
D. C. Latimer, D. J. Ernst
Abstract
In neutrino phenomenology, terms in the oscillation probabilities linear in θ13 lead naturally to the question ``How can one measure θ13 including its sign?'' Here we demonstrate analytically and with a simulation of neutrino data that Peμ and Pμμ at L/E = 2π/Δ21 exhibit significant linear dependence on θ13 in the limit of vacuum oscillations. Measurements at this particular value of L/E can thus determine not only θ13 but also its sign, if CP violation is small.
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