Observation of Reactor Electron Antineutrinos Disappearance in the RENO Experiment

Ahn, J. K.; Chebotaryov, S.; Choi, Jiwon; Choi, Seonho; Choi, Won Tae; Choi, Y.; Jang, H. I.; Jang, J. S.; Jeon, E. J.; Jeong, In Seok; Joo, K. K.; Kim, B. R.; Kim, H. S.; Kim, J. Y.; Kim, S. B.; Kim, S. H.; Kim, Woo Tae; Kim, Y. D.; Lee, Joonhee; Lee, J. K.; Lim, I. T.; J., K.; Pac, M. Y.; Park, I. G.; Park, J. S.; Park, K. S.; Shin, Jisoo; Kim, Siyeon; Yang, B. S.; Yeo, In Sung; Yi, Sangwha; Yu, I.

doi:10.1103/physrevlett.108.191802

Cited by 1,766 publications

(1,490 citation statements)

References 28 publications

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“…In this work we illustrate our points, without any loss of generality, by resorting to normal hierarchy of the neutrino mass spectrum and setting the lowest neutrino mass eigenvalue to zero. Furthermore, using the observed central values of the various lepton mixing angles, the elements of the neutrino mass matrix M ν can be found by using the equation [47,48], the left-hand side of equation (3.16) is completely known, at least in orders of magnitude. The actual mass matrix thus constructed has some elements at least one order of magnitude smaller than the others, thus suggesting texture zeros.…”

Section: Jhep02(2014)060mentioning

confidence: 99%

Doubly charged scalar decays in a type II seesaw scenario with two Higgs triplets

Chaudhuri

Grimus

Mukhopadhyaya

2014

J. High Energ. Phys.

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The type II seesaw mechanism for neutrino mass generation usually makes use of one complex scalar triplet. The collider signature of the doubly-charged scalar, the most striking feature of this scenario, consists mostly in decays into same-sign dileptons or same-sign W boson pairs. However, certain scenarios of neutrino mass generation, such as those imposing texture zeros by a symmetry mechanism, require at least two triplets in order to be consistent with the type II seesaw mechanism. We develop a model with two such complex triplets and show that, in such a case, mixing between the triplets can cause the heavier doubly-charged scalar mass eigenstate to decay into a singly-charged scalar and a W boson of the same sign. Considering a large number of benchmark points with different orders of magnitude of the ∆L = 2 Yukawa couplings, chosen in agreement with the observed neutrino mass and mixing pattern, we demonstrate that H ++ 1 → H + 2 W + can have more than 99% branching fraction in the cases where the vacuum expectation values of the triplets are small. It is also shown that the above decay allows one to differentiate a two-triplet case at the LHC, through the ratios of events in various multi-lepton channels.

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Section: Jhep02(2014)060mentioning

confidence: 99%

Doubly charged scalar decays in a type II seesaw scenario with two Higgs triplets

Chaudhuri

Grimus

Mukhopadhyaya

2014

J. High Energ. Phys.

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“…Measurements from the Sudbury Neutrino Observatory a few years later, in combination with SK data, revealed that neutrino oscillation was responsible for the apparent deficit of electron neutrinos produced in the Sun [2]. In the most recent major advance, the T2K experiment [3,4] and reactor experiments [5][6][7][8] have established that all three neutrino mass states are mixtures of all three-flavor states, which allows the possibility of CP violation in neutrino oscillation. This paper describes our most recent measurements of neutrino oscillation including our first results from analyses that combine measurements of muon neutrino disappearance and electron neutrino appearance.…”

Section: Introductionmentioning

confidence: 99%

Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with6.6×1020protons on target

Abe¹,

Adam²,

Aihara³

et al. 2015

Phys. Rev. D

279

376

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We report on measurements of neutrino oscillation using data from the T2K long-baseline neutrino experiment collected between 2010 and 2013. In an analysis of muon neutrino disappearance alone, we find the following estimates and 68% confidence intervals for the two possible mass hierarchies: normal hierarchy∶ sin 2 θ 23 ¼ 0.514 þ0.055 −0.056 and Δm 2 32 ¼ ð2.51 AE 0.10Þ × 10 −3 eV 2 =c 4 and inverted hierarchy∶ sin 2 θ 23 ¼ 0.511 AE 0.055 and Δm 2 13 ¼ ð2.48 AE 0.10Þ × 10 −3 eV 2 =c 4 . The analysis accounts for multinucleon mechanisms in neutrino interactions which were found to introduce negligible bias. We describe our first analyses that combine measurements of muon neutrino disappearance and electron neutrino appearance to estimate four oscillation parameters, jΔm 2 j, sin 2 θ 23 , sin 2 θ 13 , δ CP , and the mass hierarchy. Frequentist and Bayesian intervals are presented for combinations of these parameters, with and without including recent reactor measurements. At 90% confidence level and including reactor measurements, we exclude the region δ CP ¼ ½0.15; 0.83 π for normal hierarchy and δ CP ¼ ½−0.08; 1.09 π for inverted hierarchy. The T2K and reactor data weakly favor the normal hierarchy with a Bayes factor of 2.2. The most probable values and 68% one-dimensional credible intervals for the other oscillation parameters, when reactor data are included, are sin 2 θ 23 ¼ 0.528 þ0.055 −0.038 and jΔm 2 32 j ¼ ð2.51 AE 0.11Þ × 10 −3 eV 2 =c 4 .

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“…The T2K experiment has confirmed the neutrino oscillation in the ν µ → ν e appearance events [1], which provide us the new information of the CP violation of the lepton sector by combining the data of reactor experiments [2][3][4][5]. Therefore, the detailed study of the neutrino mixing including the CP violating phase gives us clues to reach the flavor theory [6]- [28].…”

Section: Introductionmentioning

confidence: 99%

Linking leptonic CP violation to quark unitarity triangle

Tanimoto

Yamamoto

2015

J. High Energ. Phys.

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Abstract:We study the linking between the CP violating phase of the lepton sectors and the unitarity triangle of the B 0 meson system. Antusch, King, Malinsky and Spinrath have shown that the quark mass matrices with the negligible 1-3 mixing give an interesting relation between the phase of the quark mixing matrices and CP violating measure φ 2 (α). This approach is extended by considering the SO(10) GUT including the Pati-Salam symmetry, which links the Yukawa matrices of the quark sector to the one of the lepton sector. We discuss the relation of the CP violating phases between both quark and lepton sectors as well as the mixing angles. Then, the leptonic CP violating phase is predicted in terms of the angle of the unitarity triangle of the B 0 meson system. The leptonic CP violating phase δ PMNS is predicted in the region −74 • ∼ −89 • , which is the consistent with the recent T2K results. Our predicted phase is sensitive to φ 2 (α) and φ 3 (γ). These predictions will be clearly tested in the future neutrino experiments as well as the Belle-II experiment.

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Observation of Reactor Electron Antineutrinos Disappearance in the RENO Experiment

Cited by 1,766 publications

References 28 publications

Doubly charged scalar decays in a type II seesaw scenario with two Higgs triplets

Doubly charged scalar decays in a type II seesaw scenario with two Higgs triplets

Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with6.6×1020protons on target

Linking leptonic CP violation to quark unitarity triangle

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