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Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 47: CP: Asymmetrie + 2 Neutrinos

T 47.9: Talk

Tuesday, March 10, 2015, 18:45–19:00, L.09.28 (HS 12)

Combined analysis for the measurement of CP violation with T2K and Double Chooz — •Stefan Schoppmann, Christoph Alt, Ilja Bekman, Denise Hellwig, Lukas Koch, Sebastian Lucht, Marta Meloni, Thomas Radermacher, Stefan Roth, Michael Soiron, Achim Stahl, Jochen Steinmann, Dennis Terhorst, Stefan Wertz, and Christopher Wiebusch — RWTH Aachen University - III. Physikalisches Institut B

Neutrino oscillations have become a well established phenomenon in particle physics during the past years. Recently the last unknown neutrino mixing angle θ13 has been independently measured to be non-zero by experiments of two different concepts. Reactor neutrino experiments measure the angle θ13 independently of the additional oscillation parameter δCP and the neutrino mass hierarchy, while accelerator experiments measure combinations of these three parameters. From their combination a possibility to determine δCP and the mass hierarchy arises.

In this contribution, the results of the Double Chooz reactor experiment and the T2K accelerator experiment are investigated. A special focus is set on the statistical concepts of the analyses and on their compatibility. Furthermore, a statistical method for the combination of both experiment results on the level of the measured energy spectra is developed, focussing on a determination of the yet unknown oscillation parameter δCP.

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