The possibility of leptonic CP-violation measurement with JUNO

Smirnov, Mikhail; Li, S.J.; Ling, Jiajie

doi:10.1016/j.nuclphysb.2018.05.003

Cited by 7 publications

(7 citation statements)

References 30 publications

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“…A better way is significantly reducing the matter effect with low-energy neutrino beam to make A 1 [79]. One possibility is using the muon decay at rest [80], such as DEAδALUS [81], JUNO supplemented with µDAR sources [82,83], TNT2K/TNT2HK [84,85], and C-ADS [86]. All these designs share the feature of multiple baselines.…”

Section: B Improvement With µDar Neutrinosmentioning

confidence: 99%

Improving CP Measurement with THEIA and Muon Decay at Rest

Ge,

Kong,

Pasquini

2022

Preprint

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Section: B Improvement With µDar Neutrinosmentioning

confidence: 99%

Improving CP Measurement with THEIA and Muon Decay at Rest

Ge,

Kong,

Pasquini

2022

Preprint

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“…Besides the measurements in beam experiments, δ CP is also expected to be measured by JUNO, which is also under construction. They plan to use the combination of JUNO detector and a superconductive cyclotron to get 3σ significance for 22% of the δ CP allowed range [19].…”

Section: What Do We Expect To Know?mentioning

confidence: 99%

Neutrino Flavor Model Building and the Origins of Flavor and CP Violation: A Snowmass White Paper

Almumin¹,

Chen²,

Cheng³

et al. 2022

Preprint

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The neutrino sector offers one of the most sensitive probes of new physics beyond the Standard Model of Particle Physics (SM). The mechanism of neutrino mass generation is still unknown. The observed suppression of neutrino masses hints at a large scale, conceivably of the order of the scale of a Grand Unified Theory (GUT), a unique feature of neutrinos that is not shared by the charged fermions. The origin of neutrino masses and mixing is part of the outstanding puzzle of fermion masses and mixings, which is not explained in the SM. Flavor model building for both quark and lepton sectors is important in order to gain a better understanding of the origin of the structure of mass hierarchy and flavor mixing, which constitute the dominant fraction of the SM parameters.Recent activities in neutrino flavor model building based on non-Abelian discrete flavor symmetries and modular flavor symmetries have been shown to be a promising direction to explore. The emerging models provide a framework that has a significantly reduced number of undetermined parameters in the flavor sector. In addition, such framework affords a novel origin of CP violation from group theory, due to the intimate connection between physical CP transformation and group theoretical properties of non-Abelian discrete groups.Model building based on non-Abelian discrete flavor symmetries and their modular variants enables the particle physics community to interpret the current and anticipated upcoming data from neutrino experiments. Non-Abelian discrete flavor symmetries and their modular variants can result from compactification of a higher-dimensional theory. Pursuit of flavor model building based on such frameworks thus also provides the connection to possible UV completions, in particular to string theory. We emphasize the importance of constructing models in which the uncertainties of theoretical predictions are smaller than, or at most compatible with, the error bars of measurements in neutrino experiments. While there exist proof-of-principle versions of bottom-up models in which the theoretical uncertainties are under control, it is remarkable that the key ingredients of such constructions were discovered first in top-down model building. We outline how a successful unification of bottom-up and top-down ideas and techniques may guide us towards a new era of precision flavor model building in which future experimental results can give us crucial insights in the UV completion of the SM.

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“…A better way is significantly reducing the matter effect with low-energy neutrino beam to make A 1 [82]. One possibility is using the muon decay at rest [83], such as DEAδALUS [84], JUNO supplemented with μDAR sources [85,86], TNT2K/TNT2HK [73,[87][88][89][90], and C-ADS [91]. All these designs share the feature of multiple baselines.…”

Section: Improvement With μDar Neutrinosmentioning

confidence: 99%

Improving CP measurement with THEIA and muon decay at rest

Kong

Pasquini

2022

Eur. Phys. J. C

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We explore the possibility of using the recently proposed THEIA detector to measure the $${\bar{\nu }}_\mu \rightarrow {\bar{\nu }}_e$$ ν ¯ μ → ν ¯ e oscillation with neutrinos from a muon decay at rest ($$\mu $$ μ DAR) source to improve the leptonic CP phase measurement. Due to its intrinsic low-energy beam, this $$\mu $$ μ THEIA configuration ($$\mu $$ μ DAR neutrinos at THEIA) is only sensitive to the genuine leptonic CP phase $$\delta _D$$ δ D and not contaminated by the matter effect. With detailed study of neutrino energy reconstruction and backgrounds at the THEIA detector, we find that the combination with the high-energy DUNE can significantly reduce the CP uncertainty, especially around the maximal CP violation cases $$\delta _D = \pm 90^\circ $$ δ D = ± 90 ∘ . Both the $$\mu $$ μ THEIA-25 with 17 kt and $$\mu $$ μ THEIA-100 with 70 kt fiducial volumes are considered. For DUNE + $$\mu $$ μ THEIA-100, the CP uncertainty can be better than $$8^\circ $$ 8 ∘ .

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The possibility of leptonic CP-violation measurement with JUNO

Cited by 7 publications

References 30 publications

Improving CP Measurement with THEIA and Muon Decay at Rest

Improving CP Measurement with THEIA and Muon Decay at Rest

Neutrino Flavor Model Building and the Origins of Flavor and CP Violation: A Snowmass White Paper

Improving CP measurement with THEIA and muon decay at rest

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