Improved measurement of the reactor antineutrino flux at Daya Bay

Adey, D.; An, Fengpeng; Balantekin, A. B.; Band, H. R.; Bishai, M.; Blyth, S.; Cao, D.; Cao, G. F.; Cao, Jun; Chan, Y. L.; Chang, J. F.; Chang, Yun Hsuan; Chen, H. S.; Chen, S. M.; Chen, Y.; Chen, Y. X.; Cheng, Jie; Cheng, Z. K.; Cherwinka, J. J.; Chu, M. C.; Chukanov, A.; Cummings, J. P.; Deng, F. S.; Ding, Yayun; Diwan, M. V.; Dolgareva, M.; Dove, J.; Dwyer, D. A.; Edwards, W. R.; Gonchar, M.; Gong, Guanghua; Gong, H.; Gu, W.; Guo, L.; Guo, Xin-Heng; Guo, Yuhang; Guo, Ziyi; Hackenburg, R.; Hans, S.; He, M.; Heeger, K. M.; Heng, Y. K.; Higuera, A.; Hsiung, Y.; Hu, Bei-Zhen; Hu, T.; Hu, Z. J.; Huang, Hanxiong; Huang, X. T.; Huang, Yongbo; Huber, Patrick; Huo, Wenju; Hussain, G.; Jaffe, D. E.; Jen, K. L.; Ji, X. L.; Ji, X.; Johnson, R. A.; Jones, D.; Li, Kang; Kettell, S. H.; Koerner, L. W.; Kohn, S.; Krämer, M.; Langford, T.; Lebanowski, L.; Lee, J.; Lee, J. H.C.; Lei, Ruiting; Leitner, R.; Leung, J. K. C.; Li, C.; Li, F.; Li, H. L.; Li, Q. J.; Li, S.; Li, S. C.; Li, S. J.; Li, W. D.; Li, X. N.; Li, X. Q.; Li, Y. F.; Li, Z. B.; Liu, Han; Lin, C. J.; Lin, G. L.; Lin, S.; Lin, S.; Lin, Y. C.; Ling, Jiajie; Link, J. M.; Littenberg, L.; Littlejohn, B. R.; Liu, J. C.; Liu, J. L.; Liu, Y.; Liu, Y. H.; Loh, C. W.; Lu, C.; Lu, Haoqi; Lu, J. S.; Luk, K. B.; B., X.; Y., X.; Q., Y.; Malyshkin, Y. M.; Marshall, C.; Caicedo, D. A. Martínez; McDonald, Kirk T.; McKeown, R. D.; Mitchell, I.V.; Lepin, L. Mora; Napolitano, J.; Naumov, D.; Наумова, Э.; Ochoa-Ricoux, J. P.; Olshevskiy, A.; Pan, H.-R.; Park, J.; Patton, S.; Pec, V.; Peng, J. C.; Pinsky, L.; Pun, C. S. J.; Qi, F. Z.; Qi, M.; Qian, X.; Qiu, Rui; Raper, N.; Ren, Jie; Rosero, R.; Roskovec, B.; Ruan, X. C.; Steiner, H.; Sun, Jian; Treskov, Konstantin; Tse, W.-H.; Tull, C. E.; Viren, B.; Vorobel, V.; Wang, C. H.; Wang, J.; Wang, M.; Wang, N. Y.; Wang, R. G.; Wang, W.; Wang, X.; Wang, Y. F.; Wang, Z.; Wang, Z. M.; Wei, H.; Wei, Lianghong; Wen, L.; Whisnant, K.; White, C.; Wise, T.; Wong, H. L. H.; Wong, Steven Chan-Fai; Worcester, E.; Wu, Qun; Wu, W.; Xia, Dongmei; Xing, Zhi-zhong; Xu, Jing; Xue, T.; Yang, Changgen; Yang, Haibo; Yang, Lei; Yang, M. S.; Yang, M. T.; Yang, Yifan; Ye, M.; Yeh, M.; Young, Ben; Yu, Hongzhao; Yu, Zezhong; Yue, Baobiao; Zeng, S.; Zhan, Liang; Zhang, C.; Zhang, C. C.; Zhang, F. Y.; Zhang, H. H.; Zhang, J. W.; Zhang, Q. M.; Zhang, R.; Zhang, X. F.; Zhang, X. T.; Zhang, Y. M.; Zhang, Y. X.; Zhang, Y. Y.; Zhang, Z. J.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, J.; Peng, Zheng; Li, Zhou; Zhuang, H. L.; Zou, J. H.

doi:10.1103/physrevd.100.052004

Cited by 49 publications

(59 citation statements)

References 40 publications

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“…In addition, the mass squared difference ∆m 2 3 could be constrained by the disappearance of muon-type neutrinos and antineutrinos produced in the atmosphere, see Eq. (47) and Fig. 5, where the mixing θ 3 deviated from the maximal mixing π/4 is involved.…”

Section: Ev mentioning

confidence: 92%

A model for neutrino anomalies and IceCube data

Ahn

Kang

2019

J. High Energ. Phys.

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We interpret the neutrino anomalies in neutrino oscillation experiments and the high energy neutrino events at IceCube in terms of neutrino oscillations in an extension of the standard model where three sterile neutrinos are introduced so as to make two light neutrinos to be Pseudo-Dirac particles and a light neutrino to be a Majorana particle. Our model is different from the so-called 3 + n model with n sterile neutrinos suggested to interpret short baseline anomalies in terms of neutrino oscillations. While the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) matrix in 3 + n model is simply extended to n × n unitary matrix, the neutrino mixing matrix in our model is parameterized so as to keep the 3 × 3 PMNS mixing matrix for three active neutrinos unitary.There are also no flavor changing neutral current interactions leading to the conversion of active neutrinos to sterile ones or vice versa. We derive new forms of neutrino oscillation probabilities containing the new interference between the active and sterile neutrinos which are characterized by additional new parameters ∆m 2 and θ. Based on the new formulae derived, we show how the short baseline neutrino anomalies can be explained in terms of oscillations, and study the implication of the high energy neutrino events detected at IceCube on the probe of pseudo-Dirac neutrinos. New phenomenological effects attributed to the existence of the sterile neutrinos are discussed. The observation of neutrino oscillations in the atmospheric neutrino 1 Super-Kamiokande [3], the solar neutrino 2 SNO [5], and the reactor neutrino Daya Bay[6] and RENO [7] 3 experiments is one of big discoveries in particle physics since 90's. It implies that neutrinos are massive particles and that the three flavor neutrinos ν e , ν µ , ν τ are mixtures of neutrinos with definite masses ν i (with i = 1, 2, ...). Although neutrino oscillations among three active neutrino flavors have been confirmed by the analysis based on the experiments mentioned above, there exist several anomalies which are unexpected results coming from short baseline (SBL) experiments such as the reactor antineutrino anomaly [9], the Gallium solar anomaly [10,11], and the Liquid Scintillator Neutrino Detector (LSND) anomaly [12] (including MiniBooNE anomaly [13]). To resolve those neutrino anomalies in terms of neutrino oscillation, it is required to introduce at least one additional squared-mass difference, ∆m 2 SBL , which is much larger than ∆m 2 Sol and ∆m 2 Atm [9]. This result suggests indication in favor of the possible existence of eV-mass sterile neutrino.Apart from the anomalous results in accelerator and reactor based neutrino experiments favoring the existence of light sterile neutrino, IceCube experiments [14] announced the observation of vey high energy neutrino events. The study for the track-to shower ratio of the subset with energy above 60 TeV coming from IceCube has shown that the events are consistent with the hypothesis that cosmic neutrinos have been seen even though their origin and propagation are stil...

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Section: Ev mentioning

confidence: 92%

A model for neutrino anomalies and IceCube data

Ahn

Kang

2019

J. High Energ. Phys.

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“…For the solar-neutrino-flux uncertainty, we expect in the near future that several proposed experiments, like Jinping [43], LENA [44], THEIA [45], and [46], will be able to reach a 1% precision. From our experience [47], we assume that the detection-efficiency uncertainty, including the energy and the cos θ cuts, can also reach 1%.…”

Section: Signal Measurementmentioning

confidence: 99%

“…Reactor-neutrino backgrounds can be avoided by selecting an experimental site far away from commercial reactors, like the Jinping underground laboratory [35,36,43]. Reactor-neutrino fluxes also can be well measured and constrained to a good precision [50][51][52][53], so this is not a critical issue.…”

Section: Other Backgroundmentioning

confidence: 99%

Hunting potassium geoneutrinos with liquid scintillator Cherenkov neutrino detectors *

Wang

Chen

2020

Chinese Phys. C

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In this article, we present the concept of using liquid scintillator Cherenkov neutrino detectors to detect geoneutrinos, especially the potassium-40 ( 40 K) component. Geoneutrinos can be detected with the neutrino-electron elastic scattering process. Liquid scintillator Cherenkov detectors, e.g., those using a slow liquid scintillator, enable both energy and direction measurements for charged particles. Given the directionality, the dominant intrinsic background originating from solar neutrinos in common liquid-scintillator detectors can be suppressed. We simulated the solar-and geo-neutrino scatterings in a slow liquid-scintillator detector, and implemented energy and directional reconstructions for the recoiling electrons. It is found that 40 K geoneutrinos can be detected with three-standard deviation accuracy with a kiloton-scale detector. The critical technologies required for the proposed detector is also discussed.

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“…DANSS [23] and NEOS [24] excluded the best-fit parameters of oscillation model with sterile neutrino, but their data favors at about 3σ confidence level ∆m 2 = 1.3 eV 2 and |V e4 | 2 ≈ 0.1 [21]. Daya Bay measured rates of reactor ν e due to two dominant isotopes 235 U and 239 Pu [25,26]. It was found that the observed deficit is caused mainly by a larger model contribution of 235 U, while the expected and measured rates of ν e due to 239 Pu are found to be consistent.…”

Section: Current Status and Perspectivesmentioning

confidence: 99%

The Sterile Neutrino: A short introduction

Naumov

2019

EPJ Web Conf.

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This is a pedagogical introduction to the main concepts of the sterile neutrino -a hypothetical particle, coined to resolve some anomalies in neutrino data and retain consistency with observed widths of the W and Z bosons. We briefly review existing anomalies and the oscillation parameters that best describe these data. We discuss in more detail how sterile neutrinos can be observed, as well as the consequences of its possible existence. In particular, we pay attention to a possible loss of coherence in a model of neutrino oscillations with sterile neutrinos, where this effect might be of a major importance with respect to the 3ν model. The current status of searches for a sterile neutrino state is also briefly reviewed. *

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Improved measurement of the reactor antineutrino flux at Daya Bay

Cited by 49 publications

References 40 publications

A model for neutrino anomalies and IceCube data

A model for neutrino anomalies and IceCube data

Hunting potassium geoneutrinos with liquid scintillator Cherenkov neutrino detectors *

The Sterile Neutrino: A short introduction

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