6533b7d1fe1ef96bd125c4b8
RESEARCH PRODUCT
Non-Unitarity of the lepton mixing matrix at the European spallation source
Sabya Sachi ChatterjeeO. G. MirandaM. TórtolaJ. W. F. Vallesubject
PMNS matrixPhysics::Instrumentation and Detectorsnew physicsHigh Energy Physics::Phenomenologyphase: CPFOS: Physical scienceslepton: mixingneutrino: mixing angleHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)ESSnuSB[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]CP: violation[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experimentneutrino: oscillationunitarity: violationdescription
If neutrinos get mass through the exchange of lepton mediators, as in seesaw schemes, the neutrino appearance probabilities in oscillation experiments are modified due to effective nonunitarity of the lepton mixing matrix. This also leads to new CP phases and an ambiguity in underpinning the ''conventional'' phase of the three-neutrino paradigm. We study the CP sensitivities of various setups based at the European spallation source neutrino super-beam (ESSnuSB) experiment in the presence of nonunitarity. We also examine its potential in constraining the associated new physics parameters. Moreover, we show how the combination of DUNE and ESSnuSB can help further improve the sensitivities on the nonunitarity parameters.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-10-14 |