J.P. Cravens, K. Abe, T. Iida, K. Ishihara, J. Kameda, Y. Koshio, A. Minamino, C. Mitsuda, M. Miura, S. Moriyama, M. Nakahata, S. Nakayama, Y. Obayashi, H. Ogawa, H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takeuchi, K. Ueshima, H. Watanabe, S. Yamada, I. Higuchi, C. Ishihara, M. Ishitsuka, T. Kajita, K. Kaneyuki, G. Mitsuka, H. Nishino, K. Okumura, C. Saji, Y. Takenaga, S. Clark, S. Desai, F. Dufour, E. Kearns, S. Likhoded, M. Litos, J.L. Raaf, J.L. Stone, L.R. Sulak, W. Wang, M. Goldhaber, D. Casper, J. Dunmore, W.R. Kropp, D.W. Liu, S. Mine, C. Regis, M.B. Smy, H.W. Sobel, M.R. Vagins, K.S. Ganezer, J. Hill, W.E. Keig, J.S. Jang, J.Y. Kim, I.T. Lim, M. Fechner, K. Scholberg, N. Tanimoto, C.W. Walter, R. Wendell, R.W. Ellsworth, S. Tasaka, G. Guillian, J.G. Learned, S. Matsuno, M.D. Messier, Y. Watanabe, Y. Hayato, A. K. Ichikawa, T. Ishida, T. Ishii, T. Iwashita, T. Kobayashi, T. Nakadaira, K. Nakamura, K. Nitta, Y. Oyama, Y. Totsuka, A.T. Suzuki, M. Hasegawa, K. Hiraide, I. Kato, H. Maesaka, T. Nakaya, K. Nishikawa, T. Sasaki, H. Sato, S. Yamamoto, M. Yokoyama, T.J. Haines, S. Dazeley, S. Hatakeyama, R. Svoboda, G.W. Sullivan, D. Turcan, A. Habig, Y. Fukuda, T. Sato, Y. Itow, T. Koike, T. Tanaka, C.K. Jung, T. Kato, K. Kobayashi, M. Malek, C. McGrew, A. Sarrat, R. Terri, C. Yanagisawa, N. Tamura, Y. Idehara, M. Ikeda, M. Sakuda, M. Sugihara, Y. Kuno, M. Yoshida, S.B. Kim, B.S. Yang, J. Yoo, T. Ishizuka, H. Okazawa, Y. Choi, H.K. Seo, Y. Gando, T. Hasegawa, K. Inoue, Y. Furuse, H. Ishii, K. Nishijima, H. Ishino, M. Koshiba, S. Chen, Z. Deng, Y. Liu, D. Kielczewska, H. Berns, R. Gran, K.K. Shiraishi, A. Stachyra, E. Thrane, K. Washburn, R.J. Wilkes

/pdf/solar-neutrino-measurements-in-super-kamiokande-iv-512tb2exrf.pdf

Solar Neutrino Measurements in Super-Kamiokande-IV

The phenomenon of neutrino oscillations has been established as the leading mechanism behind neutrino flavor transitions, providing solid experimental evidence that neutrinos are massive and lepton flavors are mixed. Here we review sub-leading effects in neutrino flavor transitions known as non-standard neutrino interactions, which is currently the most explored description for effects beyond the standard paradigm of neutrino oscillations. In particular, we report on the phenomenology of non-standard neutrino interactions and their experimental and phenomenological bounds as well as future sensitivity and discovery reach.

/pdf/status-of-non-standard-neutrino-interactions-2wdkvpke5b.pdf

Status of non-standard neutrino interactions

We present an up-to-date global analysis of data coming from neutrino oscillation and non-oscillation experiments, as available in April 2018, within the standard framework including three massive and mixed neutrinos. We discuss in detail the status of the three-neutrino (3nu) mass-mixing parameters, both known and unknown. Concerning the latter, we find that: normal ordering (NO) is favored over inverted ordering (IO) at 3sigma level; the Dirac CP phase is constrained within ~15% (~9%) uncertainty in NO (IO) around nearly-maximal CP-violating values; the octant of the largest mixing angle and the absolute neutrino masses remain undetermined. We briefly comment on other unknowns related to theoretical and experimental uncertainties (within 3nu) or possible new states and interactions (beyond 3nu).

Current unknowns in the three neutrino framework

This Letter reports a measurement of the flux and energy spectrum of electron antineutrinos from six 2.9 GWth nuclear reactors with six detectors deployed in two near (effective baselines 512 and 561 m) and one far (1579 m) underground experimental halls in the Daya Bay experiment. Using 217 days of data, 296 721 and 41 589 inverse β decay (IBD) candidates were detected in the near and far halls, respectively. The measured IBD yield is (1.55±0.04) ×10(-18)  cm(2) GW(-1) day(-1) or (5.92±0.14) ×10(-43)  cm(2) fission(-1). This flux measurement is consistent with previous short-baseline reactor antineutrino experiments and is 0.946±0.022 (0.991±0.023) relative to the flux predicted with the Huber-Mueller (ILL-Vogel) fissile antineutrino model. The measured IBD positron energy spectrum deviates from both spectral predictions by more than 2σ over the full energy range with a local significance of up to ∼4σ between 4-6 MeV. A reactor antineutrino spectrum of IBD reactions is extracted from the measured positron energy spectrum for model-independent predictions.

Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay

Results are reported from an improved measurement of ν_μ→ν_e transitions by the NOvA experiment. Using an exposure equivalent to 6.05×10^(20) protons on target, 33 ν_e candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA ν_μ disappearance data and external constraints from reactor experiments on sin^2 2θ_(13), the hypothesis of inverted mass hierarchy with θ_(23) in the lower octant is disfavored at greater than 93% C.L. for all values of δ_(CP).

https://link.aps.org/accepted/10.1103/PhysRevLett.118.231801

Constraints on Oscillation Parameters from ν_e Appearance and ν_μ Disappearance in NOvA

Since the discovery of neutrino oscillations, the experimental progress in the last two decades has been very fast, with the precision measurements of the neutrino squared-mass differences and of the mixing angles, including the last unknown mixing angle $\theta_{13}$. 
Today a very large set of oscillation results obtained with a variety of experimental configurations and techniques can be interpreted in the framework of three active massive neutrinos, whose mass and flavour eigenstates are related by a 3 $\times$ 3 unitary mixing matrix, the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) matrix, parameterized by three mixing angles $\theta_{12}$, $\theta_{23}$, $\theta_{13}$ and a CP-violating phase $\delta_{CP}$. The additional parameters governing neutrino oscillations are the squared-mass differences $\Delta m^2_{ji}=m^2_j-m^2_i$, where $m_i$ is the mass of the $i$th neutrino mass eigenstate. This review covers the rise of the PMNS three-neutrino mixing paradigm and the current status of the experimental determination of its parameters. 
The next years will continue to see a rich program of experimental endeavour coming to fruition and addressing the three missing pieces of the puzzle, namely the determination of the octant and precise value of the mixing angle $\theta_{23}$, the unveiling of the neutrino mass ordering (whether $m_1 < m_2 < m_3$ or $m_3 < m_1 < m_2$) and the measurement of the CP-violating phase \dcp.

Neutrino oscillations: the rise of the PMNS paradigm

Le prix Nobel de physique 2015 recompense plusieurs decennies de recherches ayant abouti a la decouverte des oscillations des neutrinos, propriete que ces particules ont de se transformer les unes dans les autres au cours de leur mouvement. Cette particularite implique qu’ils ont une masse, dont l’origine, a ce jour inconnue, pourrait depasser le cadre du Modele Standard, la theorie de reference des particules elementaires.De nombreuses autres questions restent par ailleurs en suspens : quelle est l’echelle de masse des neutrinos ? Les antineutrinos oscillent-ils comme les neutrinos ? Le neutrino est-il sa propre antiparticule ? Un vaste programme experimental vise a repondre a ces questions, et a quelques autres.

https://www.refletsdelaphysique.fr/articles/refdp/pdf/2016/03/refdp201650p4.pdf

Les neutrinos n’ont pas livré tous leurs secrets

Neutrino oscillations: The rise of the PMNS paradigm

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Neutrino oscillations: the rise of the PMNS paradigm

Les neutrinos n’ont pas livré tous leurs secrets

Neutrino oscillations: The rise of the PMNS paradigm