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Probing the leptonic Dirac CP-violating phase in neutrino oscillation experiments

MPG-Autoren
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Zhang,  He
Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

Externe Ressourcen
Volltexte (frei zugänglich)

1301.4333
(Preprint), 846KB

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Zitation

Ohlsson, T., Zhang, H., & Zhou, S. (2013). Probing the leptonic Dirac CP-violating phase in neutrino oscillation experiments. Physical Review D, D87(5): 053006, pp. 1-8. doi:10.1103/PhysRevD.87.053006.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-7564-4
Zusammenfassung
The discovery of leptonic CP violation is one of the primary goals of next-generation neutrino oscillation experiments, which is feasible due to the recent measurement of a relatively large leptonic mixing angle \theta_{13}. We suggest two new working observables \Delta A^{\rm m}_{\alpha \beta} \equiv \max[A^{\rm CP}_{\alpha \beta}(\delta)] - \min[A^{\rm CP}_{\alpha \beta}(\delta)] and \Delta A^{\rm CP}_{\alpha \beta}(\delta) \equiv A^{\rm CP}_{\alpha \beta}(\delta) - A^{\rm CP}_{\alpha \beta}(0) to describe the CP-violating effects in long-baseline and atmospheric neutrino oscillation experiments. The former signifies the experimental sensitivity to the leptonic Dirac CP-violating phase $\delta$ and can be used to optimize the experimental setup, while the latter measures the intrinsic leptonic CP violation and can be used to extract $\delta$ directly from the experimental observations. Both analytical and numerical analyses are carried out to illustrate their main features. It turns out that an intense neutrino beam with sub-GeV energies and a baseline of a few 100 km may serve as an optimal experimental setup for probing leptonic CP violation.