München 2009 – scientific programme

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T: Fachverband Teilchenphysik

T 20: Neutrinophysik (Theorie) 1

T 20.3: Talk

Thursday, March 12, 2009, 17:15–17:30, M109

An accurate analytic description of neutrino oscillations in matter — •Viviana Niro — Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany

We present a simple closed-form analytic expression for the probability of two-flavour neutrino oscillations in a matter with an arbitrary density profile. Our formula is based on a perturbative expansion and allows an easy calculation of higher order corrections. We demonstrate the validity of our results using a few model density profiles, including the PREM density profile of the Earth.