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Article

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Published version

Publication date

2001

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12511

New CP violation in neutrino oscillations

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http://dx.doi.org/10.1103/PhysRevD.64.096006

Abstract

Measurements of CP-violating observables in neutrino oscillation experiments have been studied in the literature as a way to determine the CP-violating phase in the mixing matrix for leptons. Here we show that such observables also probe new neutrino interactions in the production or detection processes. Genuine CP violation and fake CP violation due to matter effects are sensitive to the imaginary and real parts of new couplings. The dependence of the CP asymmetry on the source-detector distance is different from the standard one and, in particular, enhanced at short distances. We estimate that future neutrino factories will be able to probe in this way new interactions that are up to four orders of magnitude weaker than the weak interactions. We discuss the possible implications for models of new physics.

Subject

Teoria de camps (Física), Partícules (Física nuclear), Neutrins, Oscil·lacions, Violació càrrega-paritat (Física nuclear)

Subject (English)

Field theory (Physics), Particles (Nuclear physics), Neutrinos, Oscillations, CP violation (Nuclear physics)

Citation

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

GONZÁLEZ GARCÍA, Ma. Concepción, et al. New CP violation in neutrino oscillations. Physical Review D. 2001. Vol. 64, num. 9, pags. 096006-1-096006-14. ISSN 0556-2821. [consulted: 9 of June of 2026]. Available at: https://hdl.handle.net/2445/12511

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