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1. Charged-current non-standard neutrino interactions at Daya Bay

Author

The Daya Bay collaboration, F. P. An, W. D. Bai, A. B. Balantekin, M. Bishai, S. Blyth, G. F. Cao, J. Cao, J. F. Chang, Y. Chang, H. S. Chen, H. Y. Chen, S. M. Chen, Y. Chen, Y. X. Chen, Z. Y. Chen, J. Cheng, Y.-C. Cheng, Z. K. Cheng, J. J. Cherwinka, M. C. Chu, J. P. Cummings, O. Dalager, F. S. Deng, X. Y. Ding, Y. Y. Ding, M. V. Diwan, T. Dohnal, D. Dolzhikov, J. Dove, K. V. Dugas, H. Y. Duyang, D. A. Dwyer, J. P. Gallo, M. Gonchar, G. H. Gong, H. Gong, W. Q. Gu, J. Y. Guo, L. Guo, X. H. Guo, Y. H. Guo, Z. Guo, R. W. Hackenburg, Y. Han, S. Hans, M. He, K. M. Heeger, Y. K. Heng, Y. K. Hor, Y. B. Hsiung, B. Z. Hu, J. R. Hu, T. Hu, Z. J. Hu, H. X. Huang, J. H. Huang, X. T. Huang, Y. B. Huang, P. Huber, D. E. Jaffe, K. L. Jen, X. L. Ji, X. P. Ji, R. A. Johnson, D. Jones, L. Kang, S. H. Kettell, S. Kohn, M. Kramer, T. J. Langford, J. Lee, J. H. C. Lee, R. T. Lei, R. Leitner, J. K. C. Leung, F. Li, H. L. Li, J. J. Li, Q. J. Li, R. H. Li, S. Li, S. C. Li, W. D. Li, X. N. Li, X. Q. Li, Y. F. Li, Z. B. Li, H. Liang, C. J. Lin, G. L. Lin, S. Lin, J. J. Ling, J. M. Link, L. Littenberg, B. R. Littlejohn, J. C. Liu, J. L. Liu, J. X. Liu, C. Lu, H. Q. Lu, K. B. Luk, B. Z. Ma, X. B. Ma, X. Y. Ma, Y. Q. Ma, R. C. Mandujano, C. Marshall, K. T. McDonald, R. D. McKeown, Y. Meng, J. Napolitano, D. Naumov, E. Naumova, T. M. T. Nguyen, J. P. Ochoa-Ricoux, A. Olshevskiy, J. Park, S. Patton, J. C. Peng, C. S. J. Pun, F. Z. Qi, M. Qi, X. Qian, N. Raper, J. Ren, C. Morales Reveco, R. Rosero, B. Roskovec, X. C. Ruan, B. Russell, H. Steiner, J. L. Sun, T. Tmej, W.-H. Tse, C. E. Tull, Y. C. Tung, B. Viren, V. Vorobel, C. H. Wang, J. Wang, M. Wang, N. Y. Wang, R. G. Wang, W. Wang, X. Wang, Y. F. Wang, Z. Wang, Z. M. Wang, H. Y. Wei, L. H. Wei, W. Wei, L. J. Wen, K. Whisnant, C. G. White, H. L. H. Wong, E. Worcester, D. R. Wu, Q. Wu, W. J. Wu, D. M. Xia, Z. Q. Xie, Z. Z. Xing, H. K. Xu, J. L. Xu, T. Xu, T. Xue, C. G. Yang, L. Yang, Y. Z. Yang, H. F. Yao, M. Ye, M. Yeh, B. L. Young, H. Z. Yu, Z. Y. Yu, B. B. Yue, V. Zavadskyi, S. Zeng, Y. Zeng, L. Zhan, C. Zhang, F. Y. Zhang, H. H. Zhang, J. L. Zhang, J. W. Zhang, Q. M. Zhang, S. Q. Zhang, X. T. Zhang, Y. M. Zhang, Y. X. Zhang, Y. Y. Zhang, Z. J. Zhang, Z. P. Zhang, Z. Y. Zhang, J. Zhao, R. Z. Zhao, L. Zhou, H. L. Zhuang, and J. H. Zou

Subjects
Neutrino Mixing, Non-Standard Neutrino Properties, Neutrino Interactions, SMEFT, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract The full data set of the Daya Bay reactor neutrino experiment is used to probe the effect of the charged current non-standard interactions (CC-NSI) on neutrino oscillation experiments. Two different approaches are applied and constraints on the corresponding CC-NSI parameters are obtained with the neutrino flux taken from the Huber-Mueller model with a 5% uncertainty. For the quantum mechanics-based approach (QM-NSI), the constraints on the CC-NSI parameters ϵ eα and ϵ eα s $$ {\epsilon}_{e\alpha}^s $$ are extracted with and without the assumption that the effects of the new physics are the same in the production and detection processes, respectively. The approach based on the weak effective field theory (WEFT-NSI) deals with four types of CC-NSI represented by the parameters [ε X ] eα . For both approaches, the results for the CC-NSI parameters are shown for cases with various fixed values of the CC-NSI and the Dirac CP-violating phases, and when they are allowed to vary freely. We find that constraints on the QM-NSI parameters ϵ eα and ϵ eα s $$ {\epsilon}_{e\alpha}^s $$ from the Daya Bay experiment alone can reach the order O $$ \mathcal{O} $$ (0.01) for the former and O $$ \mathcal{O} $$ (0.1) for the latter, while for WEFT-NSI parameters [ε X ] eα , we obtain O $$ \mathcal{O} $$ (0.1) for both cases.

Published
2024
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2. Acceptability and practicability of self-management for patients with Parkinson’s disease based on smartphone applications in China

Author

J. Hu, D. Z. Yuan, Q. Y. Zhao, X. F. Wang, X. T. Zhang, Q. H. Jiang, H. R. Luo, J. Li, J. H. Ran, and J. F. Li

Subjects
Parkinson’s disease, Smartphone apps, Chronic management, mHealth, Computer applications to medicine. Medical informatics, R858-859.7
Abstract

Abstract Background China has had about 1.2 billion mobile-phone users, and this number continues to grow. However, mobile-health services (mHealth) are currently in the initial stage, and have not yet prevailed in China. Additionally, the prevalence of Parkinson’s disease (PD) in China is 1700/100,000 (≥65 years). Indeed, these PD patients would benefit from mHealth to manage their disease. Therefore, we designed a study to determine attitudes toward smartphone applications (apps) for chronic condition self-management, and to discover the practicality of these apps among PD patients in China. Methods We selected 204 participants with PD between 52 and 87 years old and surveyed their attitudes concerning the use of smartphone apps for chronic condition management via questionnaires. Results Among the participants, 65.19% had smartphones. Among these smartphone users, 82.84% expressed a preference for using apps for PD management. This group tended to be younger and more frequent web users with higher education and better medication compliance, and they tended to have a longer PD course and worse conditions (P

Published
2020
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3. Antineutrino Energy Spectrum Unfolding Based on the Daya Bay Measurement and Its Applications

Author

Jinjuan Ren, Dmitry Dolzhikov, Haifeng Li, Yuman Wang, S. Zeng, W. Q. Gu, Z. M. Wang, X. L. Ji, Minfang Yeh, Y. X. Zhang, C. Morales Reveco, Michael Kramer, Yufeng Li, K. L. Jen, Tomas Tmej, J. P. Gallo, Chun S. J. Pun, Zhuojun Hu, Shaomin Chen, Jun Cao, Haifeng Yao, J. J. Cherwinka, S. F. Li, Bangzheng Ma, Dmitry V. Naumov, Yinhong Zhang, Yongzhu Chen, Yue Meng, Q. J. Li, H. R. Pan, Kam-Biu Luk, N. Raper, H. Liang, Yixue Chen, Hongzhao Yu, Olivia Dalager, Z. Guo, D. C. Jones, Hanxiong Huang, L. Kang, N. Y. Wang, B. Viren, X. T. Huang, Tianpeng Xu, A. B. Balantekin, C. G. Yang, Zhi-zhong Xing, Baobiao Yue, W. J. Wu, Y. Z. Yang, R. D. McKeown, C. E. Tull, S. Kohn, L. H. Wei, Rong Zhao, R. T. Lei, F. Li, Simon Blyth, R. C. Mandujano, Guanghua Gong, Li Zhou, S. Hans, M. Z. Wang, Ming Chung Chu, W. H. Tse, Diru Wu, M. Ye, Jingyuan Guo, Chi Lin, K. T. McDonald, F. L. Wu, Jen-Chieh Peng, Y. K. Hor, Jianrun Hu, Qinglong Wu, Junwei Huang, Jianglai Liu, J. Dove, Yuda Zeng, J. M. Link, J. P. Cummings, L. Guo, Alexander Olshevskiy, M. Qi, Tian Xue, M. Bishai, Chao Zhang, S. J. Patton, Y. K. Heng, H. S. Chen, Xiaohui Qian, J. Lee, H. Y. Wei, K. M. Heeger, Zhijian Zhang, Rupert Leitner, L. S. Littenberg, H. L. H. Wong, H. H. Zhang, H. L. Zhuang, K. Treskov, Richard Rosero, Juan Pedro Ochoa-Ricoux, X. Wang, J. J. Ling, B. R. Littlejohn, M. Grassi, D. E. Jaffe, Miao He, E. Naumova, D. A. Dwyer, B. Z. Hu, Haoqi Lu, T. J. Langford, Ruhui Li, Yaoyu Zhang, Y. B. Huang, Vitalii Zavadskyi, Y. F. Wang, Y. H. Chang, Vit Vorobel, S. Zhang, Jing Wang, T. Hu, Xiaolu Ji, Wei Li, H. M. Steiner, R. W. Hackenburg, Y. Q. Ma, Z. Wang, Honghan Gong, K. Whisnant, Zhiyong Zhang, J. Cheng, Yuhang Guo, B. Roskovec, Jiaheng Zou, D. M. Xia, F. S. Deng, Bing-Lin Young, Liangjian Wen, Guofu Cao, X. C. Ruan, Z. K. Cheng, Z. P. Zhang, Jianmin Li, Y. Y. Ding, Fengpeng An, Zhangquan Xie, Qingmin Zhang, Jim Napolitano, W. Wang, Y. B. Hsiung, Z. Y. Yu, M. V. Diwan, X. Q. Li, H. K. Xu, Patrick Huber, Tadeas Dohnal, J. L. Sun, X. T. Zhang, J. Park, T. M. T. Nguyen, J. H. C. Lee, Z. B. Li, Shengxin Lin, E. T. Worcester, Lin Yang, F. Z. Qi, Jinmei Liu, Jing Zhao, X. Y. Ma, Christopher L. Marshall, J. F. Chang, X. H. Guo, Jiawen Zhang, M. Dvořák, C. H. Wang, R. G. Wang, Feiyang Zhang, Liang Zhan, Christopher G. White, C. Lu, J. L. Xu, Shanfeng Li, Guey-Lin Lin, Jian Liu, J. K. C. Leung, S. H. Kettell, X. B. Ma, Maxim Gonchar, Xinglong Li, and R. A. Johnson

Subjects
Physics, Nuclear and High Energy Physics, Isotope, Fissile material, 010308 nuclear & particles physics, Fission, Detector, FOS: Physical sciences, Astronomy and Astrophysics, 01 natural sciences, Spectral line, Physics::Geophysics, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Inverse beta decay, 0103 physical sciences, Energy spectrum, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Instrumentation, Energy (signal processing)
Abstract

The prediction of reactor antineutrino spectra will play a crucial role as reactor experiments enter the precision era. The positron energy spectrum of 3.5 million antineutrino inverse beta decay reactions observed by the Daya Bay experiment, in combination with the fission rates of fissile isotopes in the reactor, is used to extract the positron energy spectra resulting from the fission of specific isotopes. This information can be used to produce a precise, data-based prediction of the antineutrino energy spectrum in other reactor antineutrino experiments with different fission fractions than Daya Bay. The positron energy spectra are unfolded to obtain the antineutrino energy spectra by removing the contribution from detector response with the Wiener-SVD unfolding method. Consistent results are obtained with other unfolding methods. A technique to construct a data-based prediction of the reactor antineutrino energy spectrum is proposed and investigated. Given the reactor fission fractions, the technique can predict the energy spectrum to a 2% precision. In addition, we illustrate how to perform a rigorous comparison between the unfolded antineutrino spectrum and a theoretical model prediction that avoids the input model bias of the unfolding method., 22 pages, 10 figures, 6 supplemental materials

Published
2021

4. Improved measurement of the reactor antineutrino flux at Daya Bay

Author

Yinhong Zhang, J. P. Cummings, Z. Guo, X. L. Ji, H. S. Chen, K. T. McDonald, H. Y. Wei, F. S. Deng, Christopher L. Marshall, J. F. Chang, Jing Wang, S. K. Lin, F. Li, Z. K. Cheng, Z. P. Zhang, Y. Malyshkin, Liangjian Wen, Guofu Cao, Bing-Lin Young, W. H. Tse, C. Lu, T. Wise, M. Qi, J. J. Cherwinka, Li Zhou, Lin Yang, N. Raper, Jinmei Liu, Jing Zhao, S. Li, Jianglai Liu, X. Y. Ma, Yang Yang, H. R. Band, I. Mitchell, Yi Chen, Artem Chukanov, Michael Kramer, K. M. Heeger, Y. Chang, B. Z. Hu, Lawrence Pinsky, Chun S. J. Pun, Zhuojun Hu, Chang-Wei Loh, L. Mora Lepin, S. Kohn, Shanfeng Li, C. Li, H. Liang, Yixue Chen, S. J. Patton, Hongliang Li, L. Lebanowski, Y. Y. Ding, W. R. Edwards, Shaomin Chen, Jun Cao, Xiao-yan Li, A. Higuera, C. G. Yang, E. Naumova, D. A. Dwyer, W. Wang, J. M. Link, T. J. Langford, H. L. Zhuang, Rupert Leitner, Zhi-zhong Xing, Christopher G. White, Jinjuan Ren, Y. C. Lin, T. Hu, S. F. Li, Q. J. Li, Y. L. Chan, L. W. Koerner, H. M. Steiner, X.F. Zhang, X. Wang, M. Ye, Dmitry V. Naumov, Y. B. Hsiung, M. T. Yang, Haoqi Lu, Minfang Yeh, Y. F. Wang, Y. Q. Ma, M. V. Diwan, Honghan Gong, D. C. Jones, R. M. Qiu, X. Q. Li, Haijun Yang, Baobiao Yue, J. Park, B. R. Littlejohn, W. J. Wu, D. A. Martinez Caicedo, W. Gu, Jia Xu, Yufeng Li, K. L. Jen, Yuhang Guo, Siew Cheng Wong, A. B. Balantekin, R. D. McKeown, R. G. Wang, Jiaheng Zou, Z. M. Wang, Wenju Huo, N. Y. Wang, Liang Zhan, B. Viren, Patrick Huber, Yaoyu Zhang, Y. B. Huang, X. T. Zhang, Juan Pedro Ochoa-Ricoux, Shengxin Lin, Miao He, Yunzhe Liu, S. H. Kettell, X. B. Ma, Richard Rosero, Simon Blyth, M. Z. Wang, Ming Chung Chu, Maxim Gonchar, L. H. Wei, G. Hussain, R. A. Johnson, Yang Liu, Rui Zhang, Jiawen Zhang, J. H. C. Lee, Hongzhao Yu, Hanxiong Huang, L. Kang, K. Whisnant, Guey-Lin Lin, Jonathan S. Lu, J. Cheng, J. K. C. Leung, Chunjie Wang, Z. Y. Yu, R. W. Hackenburg, L. Guo, Qinglong Wu, Kam Biu Luk, H. H. Zhang, Tian Xue, Z. Wang, Chao Zhang, Y. K. Heng, Zhibing Li, Jen-Chieh Peng, H. R. Pan, J. Dove, X. C. Ruan, Guanghua Gong, C. E. Tull, Chi Lin, D. Adey, Xiaohui Qian, J. Lee, S. Zeng, M. Dolgareva, H. L. H. Wong, J. L. Sun, E. T. Worcester, F. Z. Qi, Xiaolu Ji, B. Roskovec, D. M. Xia, X. H. Guo, P. Zheng, Feiyang Zhang, Qingmin Zhang, D. Cao, R. T. Lei, D. E. Jaffe, Alexander Olshevskiy, Jim Napolitano, J. J. Ling, Zhijian Zhang, K. Treskov, F. P. An, Y. X. Zhang, C. C. Zhang, Xingtao Huang, M. Bishai, L. S. Littenberg, V. Pec, S. Hans, Mengsu Yang, Vit Vorobel, Wei Li, and Zhiyong Zhang

Subjects
Physics, Physics - Instrumentation and Detectors, hep-ex, 010308 nuclear & particles physics, Fission, Daya bay, Astrophysics::High Energy Astrophysical Phenomena, Analytical chemistry, FOS: Physical sciences, Flux, Instrumentation and Detectors (physics.ins-det), Detailed data, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Yield ratio, Neutron, High Energy Physics::Experiment, 010306 general physics, physics.ins-det
Abstract

This work reports a precise measurement of the reactor antineutrino flux using 2.2 million inverse beta decay (IBD) events collected with the Daya Bay near detectors in 1230 days. The dominant uncertainty on the neutron detection efficiency is reduced by 56% with respect to the previous measurement through a comprehensive neutron calibration and detailed data and simulation analysis. The new average IBD yield is determined to be $(5.91\pm0.09)\times10^{-43}~\rm{cm}^2/\rm{fission}$ with total uncertainty improved by 29%. The corresponding mean fission fractions from the four main fission isotopes $^{235}$U, $^{238}$U, $^{239}$Pu, and $^{241}$Pu are 0.564, 0.076, 0.304, and 0.056, respectively. The ratio of measured to predicted antineutrino yield is found to be $0.952\pm0.014\pm0.023$ ($1.001\pm0.015\pm0.027$) for the Huber-Mueller (ILL-Vogel) model, where the first and second uncertainty are experimental and theoretical model uncertainty, respectively. This measurement confirms the discrepancy between the world average of reactor antineutrino flux and the Huber-Mueller model., 10 pages, 9 figures, and 2 tables

Published
2019

5. Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay

Author

Hongzhao Yu, Hanxiong Huang, L. Kang, J. K. C. Leung, Yanchu Wang, Li Zhou, Alexander Olshevskiy, D. Cao, S. H. Kettell, Miao He, J. J. Ling, S. J. Patton, D. E. Jaffe, Christopher G. White, X. B. Ma, Xingtao Huang, M. Bishai, Jinjuan Ren, Y. L. Chan, H. R. Band, H. Liang, Yixue Chen, H. L. Zhuang, S. Kohn, E. T. Worcester, M. Ye, Wenxiao Wang, Haifeng Li, F. Z. Qi, Jen-Chieh Peng, L. S. Littenberg, Juan Pedro Ochoa-Ricoux, T. Wise, Maxim Gonchar, Yanping Huang, R. T. Lei, Y. C. Lin, W. R. Edwards, D. Taychenachev, R. A. Johnson, G. Hussain, X. L. Ji, V. Vorobel, Jianrun Hu, Patrick Huber, X. Wang, Qingmin Zhang, Jiawen Zhang, Quanyin Li, Yinhong Zhang, Minfang Yeh, Chang-Wei Loh, B. R. Littlejohn, Xiaolu Ji, D. M. Xia, H. Y. Wei, F. S. Deng, X. T. Zhang, Z. Guo, B. Roskovec, R. Zhang, L. Lebanowski, Y. Y. Ding, Shengxin Lin, Z. K. Cheng, Z. P. Zhang, Jianglai Liu, Bing-Lin Young, Xiaohui Qian, D. Adey, Jim Napolitano, J. Lee, Honghan Gong, Yaoyu Zhang, Yang Yang, D. A. Martinez Caicedo, S. Zeng, M. Dolgareva, Michael Kramer, L. Mora Lepin, Y. H. Chang, E. Naumova, D. A. Dwyer, K. T. McDonald, H. L. H. Wong, T. J. Langford, Guey-Lin Lin, Jonathan S. Lu, Baobiao Yue, X.F. Zhang, Xiao-yan Li, A. Higuera, Zhi-zhong Xing, C. H. Wang, H. M. Steiner, X. C. Ruan, Huijun Zhang, P. Zheng, Feiyang Zhang, Haijun Yang, L. Guo, R. G. Wang, M. Qi, W. J. Wu, Siew Cheng Wong, R. D. McKeown, Ye Chen, Chao Zhang, J. Park, Liang Zhan, Changjian Lin, Yang Heng, Jiaheng Zou, Mengsu Yang, Haonan Lu, Shanfeng Li, H. R. Pan, T. Hu, Xiaohu Guo, M. T. Yang, J. H. C. Lee, B. Z. Hu, F. Li, Yunzhe Liu, C. E. Tull, W. H. Tse, Christopher L. Marshall, J. F. Chang, W. Gu, Z. Y. Yu, D. C. Jones, Zhibing Li, Yufeng Li, J. M. Link, J. P. Cummings, A. B. Balantekin, Rupert Leitner, Changgen Yang, K. M. Heeger, K. L. Jen, Jing Wang, C. Lu, J. L. Xu, Wenju Huo, S. K. Lin, Y. Malyshkin, Liangjian Wen, Guofu Cao, Qinglong Wu, Kam Biu Luk, Chun S. J. Pun, Artem Chukanov, Lawrence Pinsky, Zhuojun Hu, Shaomin Chen, Jun Cao, J. L. Sun, S. F. Li, Tian Xue, Y. X. Zhang, Simon Blyth, Dmitry V. Naumov, M. Z. Wang, Ming Chung Chu, C. Li, Richard Rosero, W. Tang, N. Y. Wang, B. Viren, L. H. Wei, Z. M. Wang, Yanhui Ma, K. Whisnant, J. Cheng, Yanlin Liu, Wei Li, Zhijian Zhang, K. Treskov, Zhiyong Zhang, F. P. An, C. C. Zhang, Hucheng Chen, V. Pec, S. Hans, R. W. Hackenburg, Z. Wang, Guanghua Gong, J. J. Cherwinka, N. Raper, L. W. Koerner, Yicheng Guo, Y. B. Hsiung, M. V. Diwan, R. M. Qiu, X. Q. Li, Lin Yang, Jinmei Liu, Jing Zhao, S. Li, X. Y. Ma, and I. Mitchell

Subjects
Physics, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Oscillation, hep-ex, Daya bay, General Physics and Astronomy, Inverse, FOS: Physical sciences, Daya Bay Reactor Neutrino Experiment, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Spectral line, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010306 general physics, Electron neutrino, physics.ins-det, Energy (signal processing)
Abstract

We report a measurement of electron antineutrino oscillation from the Daya Bay Reactor Neutrino Experiment with nearly 4 million reactor $\overline{\nu}_{e}$ inverse beta decay candidates observed over 1958 days of data collection. The installation of a Flash-ADC readout system and a special calibration campaign using different source enclosures reduce uncertainties in the absolute energy calibration to less than 0.5% for visible energies larger than 2 MeV. The uncertainty in the cosmogenic $^9$Li and $^8$He background is reduced from 45% to 30% in the near detectors. A detailed investigation of the spent nuclear fuel history improves its uncertainty from 100% to 30%. Analysis of the relative $\overline{\nu}_{e}$ rates and energy spectra among detectors yields $\sin^{2}2\theta_{13} = 0.0856\pm 0.0029$ and $\Delta m^2_{32}=(2.471^{+0.068}_{-0.070})\times 10^{-3}~\mathrm{eV}^2$ assuming the normal hierarchy, and $\Delta m^2_{32}=-(2.575^{+0.068}_{-0.070})\times 10^{-3}~\mathrm{eV}^2$ assuming the inverted hierarchy., Comment: 6 pages, 4 figures, and 1 table. v4: the published version

Published
2018

6. Seasonal variation of the underground cosmic muon flux observed at Daya Bay

Author

T. J. Langford, K. V. Tsang, H. M. Steiner, Y. Q. Ma, Artem Chukanov, Lawrence Pinsky, Michael Kramer, J. J. Cherwinka, Patrick Huber, S. J. Patton, W. Q. Gu, X. T. Zhang, Qinglong Wu, S. H. Kettell, X. B. Ma, Shengxin Lin, A. Khan, Tian Xue, W. J. Wu, Chang-Wei Loh, R. D. McKeown, Xiaohu Guo, Richard Rosero, L. Lebanowski, H. L. Zhuang, Y. K. Heng, Y. Y. Ding, M. Ye, T. Wise, J. F. Chang, M. Qi, Alexander Olshevskiy, M. T. Yang, Maxim Gonchar, D. C. Jones, D. Taychenachev, S. Hans, Changgen Yang, K. Whisnant, J. Cheng, E. T. Worcester, Y. Xu, E. C. Huang, A. B. Balantekin, G. Hussain, Y. Nakajima, H. S. Chen, C. Li, W. Tang, K. K. Kwan, Y. L. Chan, F. Z. Qi, Chun S. J. Pun, R. A. Johnson, M. W. Kwok, N. Y. Wang, C. Lu, B. Viren, J. J. Ling, Shaomin Chen, Jun Cao, N. Viaux, J. L. Xu, X. L. Ji, Christopher G. White, B. Z. Hu, Xin Qian, Jiawen Zhang, H. H. Zhang, Minfang Yeh, J. B. Jiao, Vit Vorobel, S. F. Li, W. R. Edwards, Guisen Li, Honghan Gong, Rupert Leitner, Zhijian Zhang, Z. Guo, Dmitry V. Naumov, H. R. Band, C. H. Wang, R. T. Lei, Hanxiong Huang, L. Kang, Xingtao Huang, Yang Yang, Y. C. Lin, B. Roskovec, Xiao-yan Li, K. Treskov, Wei Li, A. Higuera, S. Zeng, J. Park, Jen-Chieh Peng, Siew Cheng Wong, L. H. Whitehead, Zhi-zhong Xing, Z. Y. Yu, X. Wang, Li Zhou, H. Y. Wei, F. P. An, Wenju Huo, Yicheng Guo, K. T. McDonald, Haoqi Lu, H. Liang, Yixue Chen, Jiaheng Zou, Jinjuan Ren, D. A. Martinez Caicedo, M. Bishai, J. H. C. Lee, Haijun Yang, Q. J. Li, Dejun Li, Y. F. Wang, Yi Chen, Y. B. Hsiung, Shanfeng Li, Bing-Lin Young, J. Dove, B. R. Littlejohn, Wei Wang, C. C. Zhang, C. H. Wu, M. V. Diwan, L. S. Littenberg, R. M. Qiu, X. Q. Li, T. Kwok, Guey-Lin Lin, R. W. Hackenburg, R. G. Wang, Z. Wang, Simon Blyth, M. Z. Wang, Ming Chung Chu, Yufeng Li, K. L. Jen, N. Raper, Jonathan S. Lu, Z. Ye, Liang Zhan, Marco Grassi, Miao He, Y. X. Zhang, X. C. Ruan, Kam-Biu Luk, S. K. Lin, L. Guo, Y. H. Chang, F. Li, H. R. Pan, D. M. Xia, Chao Zhang, Z. B. Li, Zhiyong Zhang, S. Jetter, Y. Malyshkin, J. L. Sun, Lin Yang, Z. M. Wang, Jinmei Liu, C. Sebastiani, Liangjian Wen, Jing Zhao, X. Y. Ma, Guofu Cao, I. Mitchell, Jianglai Liu, S. Kohn, D. Cao, Guanghua Gong, C. E. Tull, Z. K. Cheng, Z. P. Zhang, D. E. Jaffe, Chi Lin, Juan Pedro Ochoa-Ricoux, Qingmin Zhang, Q. Y. Chen, Jim Napolitano, Y. M. Zhang, J. M. Link, J. P. Cummings, J. Lee, M. Dolgareva, H. L. H. Wong, Kwong Lau, K. M. Heeger, V. Pec, X. P. Ji, Mengsu Yang, J. K. Xia, T. Hu, H. Y. Ngai, R. L. Gill, E. Naumova, and D. A. Dwyer

Subjects
Physics - Instrumentation and Detectors, Correlation coefficient, Physics::Instrumentation and Detectors, cosmic ray experiments, neutrino detectors, neutrino experiments, Flux, FOS: Physical sciences, Atmospheric sciences, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, medicine, 010306 general physics, Physics, COSMIC cancer database, Muon, 010308 nuclear & particles physics, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Seasonality, Atmospheric temperature, medicine.disease, Overburden, Neutrino detector, High Energy Physics::Experiment
Abstract

The Daya Bay Experiment consists of eight identically designed detectors located in three underground experimental halls named as EH1, EH2, EH3, with 250, 265 and 860 meters of water equivalent vertical overburden, respectively. Cosmic muon events have been recorded over a two-year period. The underground muon rate is observed to be positively correlated with the effective atmospheric temperature and to follow a seasonal modulation pattern. The correlation coefficient $\alpha$, describing how a variation in the muon rate relates to a variation in the effective atmospheric temperature, is found to be $\alpha_{\text{EH1}} = 0.362\pm0.031$, $\alpha_{\text{EH2}} = 0.433\pm0.038$ and $\alpha_{\text{EH3}} = 0.641\pm0.057$ for each experimental hall., Comment: Updated to be identical to the published version

Published
2018

7. Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay

Author

P. Jaffke, Y. K. Hor, L. Guo, H. H. Zhang, J. Lee, F. Li, Chao Zhang, S. Zeng, M. Dolgareva, Jen-Chieh Peng, C. Li, H. L. H. Wong, Y. X. Zhang, Marco Grassi, Miao He, J. Dove, J. P. Cummings, S. H. Kettell, X. B. Ma, J. J. Cherwinka, Z. M. Wang, S. J. Patton, W. Q. Gu, X. P. Ji, X. C. Ruan, J. B. Jiao, J. Joshi, Z. Guo, Michael Kramer, Chun S. J. Pun, Hanxiong Huang, L. Kang, Yi-Fang Zhao, Maxim Gonchar, K. M. Heeger, W. Tang, H. L. Zhuang, M. V. Diwan, Haosheng Chen, Shaomin Chen, Jun Cao, Rupert Leitner, K. T. McDonald, J. M. Link, S. K. Lin, R. A. Johnson, N. Y. Wang, M. Qi, Vit Vorobel, S. F. Li, C. H. Wu, W. J. Wu, Changgen Yang, Changjian Lin, B. Viren, Richard Rosero, R. D. McKeown, J. K. Xia, Jiawen Zhang, Yanchu Wang, Y. Malyshkin, Dmitry V. Naumov, R. T. Lei, H. R. Band, D. C. Jones, Wei Li, A. B. Balantekin, Kwong Lau, X. L. Ji, C. Lu, J. L. Xu, H. Y. Ngai, R. L. Gill, Meng Wang, H. Liang, Yixue Chen, G. X. Sun, N. Viaux, Liangjian Wen, Y. C. Lin, Guofu Cao, H. Y. Wei, T. Hu, Y. L. Chan, Mengsu Yang, Bing-Lin Young, Haijun Yang, X. Wang, M. Mooney, W. R. Cen, Xingtao Huang, D. W. Liu, Minfang Yeh, T. Kwok, M. Bishai, Qinglong Wu, Kam Biu Luk, D. M. Xia, Zhiyong Zhang, Haoqi Lu, Dejun Li, Guey-Lin Lin, Y. Nakajima, Jonathan S. Lu, Z. Ye, H. R. Pan, L. S. Littenberg, L. H. Whitehead, Yi Chen, Chunjie Wang, N. Raper, Tian Xue, J. H. Cheng, M. W. Kwok, E. Naumova, D. A. Dwyer, B. Roskovec, Zhi Ning, Y. Chang, Q. J. Li, Xiaohu Guo, M. T. Yang, Chang-Wei Loh, Xuefeng Ding, T. J. Langford, Y. K. Heng, Mengyun Guan, K. V. Tsang, Yufeng Li, K. L. Jen, Li Zhou, B. R. Littlejohn, C. E. Tull, Shanfeng Li, H. M. Steiner, L. Lebanowski, Y. Y. Ding, Z. K. Cheng, D. Cao, Y. Q. Ma, Z. P. Zhang, Zhijian Zhang, M. Ye, K. Whisnant, J. Cheng, Artem Chukanov, Juan Pedro Ochoa-Ricoux, Nan Zhou, Zhibing Li, K. Treskov, D. Taychenachev, Alexander Olshevskiy, Lawrence Pinsky, K. K. Kwan, G. Hussain, R. P. Guo, Y. Xu, E. C. Huang, Yaping Cheng, Qingmin Zhang, V. Pec, J. J. Ling, Q. W. Zhao, Q. Y. Chen, S. Hans, B. Z. Hu, Guisen Li, Jim Napolitano, Li Chang, W. L. Zhong, F. P. An, Honghan Gong, Qingming Ma, Siew Cheng Wong, W. R. Edwards, Y. B. Hsiung, Ran Han, Jiaheng Zou, Lin Yang, Jinmei Liu, Jing Zhao, X. Y. Ma, J. Y. Xu, I. Mitchell, S. Jetter, Wenju Huo, Simon Blyth, Ming Chung Chu, W. Hu, Zeyuan Yu, Xin Qian, S. Kohn, Xiao-yan Li, A. Higuera, Zhi-zhong Xing, Ziyan Deng, Jianglai Liu, Jinjuan Ren, W. H. Wang, R. W. Hackenburg, Z. Wang, Guanghua Gong, Y. M. Zhang, D. E. Jaffe, T. Wise, Patrick Huber, J. F. Chang, X. T. Zhang, Shengxin Lin, D. A. Martinez Caicedo, J. L. Sun, R. G. Wang, J. Park, J. H. C. Lee, Liang Zhan, E. T. Worcester, Z. Lv, F. Z. Qi, J. de Arcos, and Christopher G. White

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Daya bay, energy spectrum, Flux, FOS: Physical sciences, Daya Bay Reactor Neutrino Experiment, antineutrino flux, Daya Bay, reactor, 01 natural sciences, High Energy Physics - Experiment, Positron energy, Physics::Geophysics, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Energy spectrum, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Inverse beta decay, High Energy Physics::Experiment
Abstract

A new measurement of the reactor antineutrino flux and energy spectrum by the Daya Bay reactor neutrino experiment is reported. The antineutrinos were generated by six 2.9~GW$_{\mathrm{th}}$ nuclear reactors and detected by eight antineutrino detectors deployed in two near (560~m and 600~m flux-weighted baselines) and one far (1640~m flux-weighted baseline) underground experimental halls. With 621 days of data, more than 1.2 million inverse beta decay (IBD) candidates were detected. The IBD yield in the eight detectors was measured, and the ratio of measured to predicted flux was found to be $0.946\pm0.020$ ($0.992\pm0.021$) for the Huber+Mueller (ILL+Vogel) model. A 2.9~$\sigma$ deviation was found in the measured IBD positron energy spectrum compared to the predictions. In particular, an excess of events in the region of 4-6~MeV was found in the measured spectrum, with a local significance of 4.4~$\sigma$. A reactor antineutrino spectrum weighted by the IBD cross section is extracted for model-independent predictions., Comment: version published in Chinese Physics C

Published
2017

8. Limits on Active to Sterile Neutrino Oscillations from Disappearance Searches in the MINOS, Daya Bay, and Bugey-3 Experiments

Author

Rakesh Sharma, S. Childress, Wenju Huo, H. H. Zhang, D. Cao, A. Schreckenberger, N. Graf, C. D. Moore, R. Gran, Carlos Escobar, Simon Blyth, R. K. Plunkett, X. L. Ji, S. Moed Sher, Haosheng Chen, M. Z. Wang, Ming Chung Chu, D. Torretta, W. Hu, G. J. Bock, J. M. Link, N. Poonthottathil, Jen-Chieh Peng, J. K. Xia, J. Lee, R. W. Hackenburg, S. Zeng, X. Qiu, M. Dolgareva, Carl White, Z. Wang, J. Dove, Chun S. J. Pun, C. M. Castromonte, J. Joshi, J. P. Cummings, M. M. Medeiros, Michael Kramer, L. Corwin, W. J. Wu, R. D. McKeown, P. Sail, Shaomin Chen, Jun Cao, Xuefeng Ding, Z. K. Cheng, Z. P. Zhang, H. L. H. Wong, Y. X. Zhang, X. P. Ji, J. Hartnell, P. Lucas, Hanxiong Huang, S. C. Tognini, Rupert Leitner, M. Qi, Changjian Lin, Gregory J Pawloski, J. Park, L. Kang, J. K. C. Leung, Li Zhou, R. Mehdiyev, K. L. Jen, S. H. Kettell, Yaping Cheng, T. Hu, X. B. Ma, R. B. Patterson, Zhijian Zhang, T. Wise, A. B. Balantekin, S. F. Li, C. Li, Lin Yang, S. R. Mishra, C. James, Yanchu Wang, C. Rosenfeld, X. T. Zhang, M. Mooney, Vit Vorobel, K. Treskov, Dmitry V. Naumov, M. Orchanian, H. Y. Ngai, R. L. Gill, Marco Grassi, Miao He, A. E. Kreymer, D. D. Phan, N. Viaux, S. R. Hahn, Kwong Lau, P. Schreiner, Y. L. Chan, R. Toner, B. Z. Hu, R. Hatcher, D. Cronin-Hennessy, G. X. Sun, B. Rebel, H. A. Rubin, S. K. Lin, J. H. C. Lee, T. Kafka, Jinmei Liu, Jing Zhao, Alec Habig, K. Grzelak, Z. Isvan, L. Mualem, X. Y. Ma, J. Y. Xu, Wei Li, W. A. Mann, F. P. An, T. J. Carroll, P. Adamson, Yanfeng Zhang, S. J. Patton, W. Q. Gu, Y. C. Lin, Mengsu Yang, H. R. Gallagher, Maxim Gonchar, D. W. Liu, Minfang Yeh, Y. Malyshkin, A. Perch, A. Radovic, J. Schneps, I. Mitchell, Harvey B Newman, W. Tang, S. M. S. Kasahara, Marvin L Marshak, X. Wang, P. Gouffon, Liangjian Wen, S. De Rijck, R. A. Johnson, A. Holin, Guofu Cao, Guanghua Gong, X. Tian, Alexander Olshevskiy, M. Bishai, K. T. McDonald, S. Jetter, Haoqi Lu, Dejun Li, W. Flanagan, Wei Wang, B. Roskovec, Jiawen Zhang, Zengcai V. Guo, Y. K. Hor, L. Guo, J. Cheng, Chao Zhang, Jianglai Liu, E. T. Worcester, Z. Lv, F. Z. Qi, H. L. Zhuang, E. Falk, Haijun Yang, J. de Arcos, J. Urheim, Guisen Li, J. J. Cherwinka, G. M. Irwin, Zhiyong Zhang, Honghan Gong, Z. Y. Deng, C. E. Tull, N. Y. Wang, Jinjuan Ren, B. Viren, J. H. Cheng, G. J. Feldman, L. S. Littenberg, C. H. Wu, Zhi Ning, I. Anghel, M. A. Thomson, D. Naples, Stanley G. Wojcicki, Li Chang, Y. Xu, E. C. Huang, Karol Lang, Q. W. Zhao, F. Li, B. R. Littlejohn, H. Y. Wei, Yi-Fang Zhao, G. Koizumi, Qingming Ma, V. Pec, R. L. Talaga, J. J. Ling, Yufeng Li, J. O'Connor, J. Hylen, Y. B. Hsiung, R. J. Nichol, W. L. Zhong, M. C. Goodman, M. V. Frohne, T. Kwok, N. Tagg, N. Mayer, J. B. Jiao, R. A. Gomes, M. C. Sanchez, M. V. Diwan, Guey-Lin Lin, Jonathan S. Lu, Z. Ye, R. B. Pahlka, Qinglong Wu, G.D. Barr, Junwei Huang, Leigh H. Whitehead, Kam Biu Luk, Chunjie Wang, M. Y. Gabrielyan, Siew Cheng Wong, Tian Xue, W. R. Cen, R. T. Lei, K. M. Heeger, J. R. Meier, Xin Qian, Juergen Thomas, Y. K. Heng, Z. M. Wang, Q. J. Li, S. V. Cao, J. A. Nowak, Ran Han, Jiaheng Zou, S. Hans, Mengyun Guan, J. A. Musser, Xiao-yan Li, A. Higuera, X. T. Huang, J. M. Paley, K. Whisnant, Zhi-zhong Xing, Joao A B Coelho, Juan Pedro Ochoa-Ricoux, H. R. Band, K. V. Tsang, H. Liang, Yixue Chen, M. Kordosky, Andrew Blake, J. L. Sun, Artem Chukanov, Lawrence Pinsky, A. Timmons, N. Raper, Richard Rosero, J. F. Chang, Changgen Yang, C. Lu, J. L. Xu, L. H. Whitehead, Ning Zhou, Y. Chang, Shanfeng Li, J. J. Evans, M. M. Pfützner, D. E. Jaffe, Y. Nakajima, Yi Chen, R. C. Webb, M. W. Kwok, L. Lebanowski, Y. Y. Ding, D. M. Xia, J. K. De Jong, S. Phan-Budd, A. Sousa, K. K. Kwan, N. E. Devenish, P. J. Litchfield, R. P. Guo, G. Tzanakos, C. L. McGivern, S. Kohn, S. Germani, Warner A. Miller, A. V. Devan, Bing-Lin Young, D. Bogert, A. Aurisano, W. R. Edwards, E. Naumova, D. A. Dwyer, T. J. Langford, H. M. Steiner, P. Vahle, Y. Q. Ma, Patrick Huber, Shengxin Lin, D. A. Martinez Caicedo, J. K. Nelson, R. G. Wang, D. A. Jensen, Liang Zhan, M. D. Messier, A. C. Weber, X. C. Ruan, Qingmin Zhang, Q. Y. Chen, Jim Napolitano, Xiaohu Guo, M. T. Yang, Hao Pan, C. W. Loh, Z. Y. Yu, Zhibing Li, M. Ye, D. Taychenachev, G. Hussain, J. Todd, P. Jaffke, and R. Chen

Subjects
Physics, Particle physics, Sterile neutrino, Liquid Scintillator Neutrino Detector, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, High Energy Physics - Experiment (hep-ex), MINOS, 0103 physical sciences, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, 010306 general physics, Neutrino oscillation, Electron neutrino, QC
Abstract

Searches for a light sterile neutrino have been performed independently by the MINOS and the Daya Bay experiments using the muon (anti)neutrino and electron antineutrino disappearance channels, respectively. In this Letter, results from both experiments are combined with those from the Bugey-3 reactor neutrino experiment to constrain oscillations into light sterile neutrinos. The three experiments are sensitive to complementary regions of parameter space, enabling the combined analysis to probe regions allowed by the LSND and MiniBooNE experiments in a minimally extended four-neutrino flavor framework. Stringent limits on $\sin^2 2\theta_{\mu e}$ are set over 6 orders of magnitude in the sterile mass-squared splitting $\Delta m^2_{41}$. The sterile-neutrino mixing phase space allowed by the LSND and MiniBooNE experiments is excluded for $\Delta m^2_{41} < 0.8$ eV$^2$ at 95% CL$_s$., Comment: 8 pages, 4 figures, published in Physical Review Letters. Data release found at http://www-numi.fnal.gov/PublicInfo/forscientists.html and at https://wiki.bnl.gov/dayabay/index.php?title=Daya_Bay%27s_Sterile_Neutrino_Results_in_2016

Published
2016
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9. Limits on Active to Sterile Neutrino Oscillations from Disappearance Searches in the MINOS, Daya Bay, and Bugey-3 Experiments

Author

Adamson, P. An, F. P. Anghel, I. Aurisano, A. and Balantekin, A. B. Band, H. R. Barr, G. Bishai, M. Blake, A. Blyth, S. Bock, G. J. Bogert, D. Cao, D. Cao, G. F. Cao, J. Cao, S. V. Carroll, T. J. Castromonte, C. M. and Cen, W. R. Chan, Y. L. Chang, J. F. Chang, L. C. and Chang, Y. Chen, H. S. Chen, Q. Y. Chen, R. Chen, S. M. and Chen, Y. Chen, Y. X. Cheng, J. Cheng, J. -H. Cheng, Y. P. Cheng, Z. K. Cherwinka, J. J. Childress, S. Chu, M. C. Chukanov, A. Coelho, J. A. B. Corwin, L. and Cronin-Hennessy, D. Cummings, J. P. de Arcos, J. De Rijck, S. Deng, Z. Y. Devan, A. V. Devenish, N. E. Ding, X. F. and Ding, Y. Y. Diwan, M. V. Dolgareva, M. Dove, J. and Dwyer, D. A. Edwards, W. R. Escobar, C. O. Evans, J. J. and Falk, E. Feldman, G. J. Flanagan, W. Frohne, M. V. and Gabrielyan, M. Gallagher, H. R. Germani, S. Gill, R. and Gomes, R. A. Gonchar, M. Gong, G. H. Gong, H. Goodman, M. C. Gouffon, P. Graf, N. Gran, R. Grassi, M. and Grzelak, K. Gu, W. Q. Guan, M. Y. Guo, L. Guo, R. P. and Guo, X. H. Guo, Z. Habig, A. Hackenburg, R. W. Hahn, S. R. Han, R. Hans, S. Hartnell, J. Hatcher, R. He, M. and Heeger, K. M. Heng, Y. K. Higuera, A. Holin, A. Hor, Y. K. Hsiung, Y. B. Hu, B. Z. Hu, T. Hu, W. Huang, E. C. Huang, H. X. Huang, J. Huang, X. T. Huber, P. and Huo, W. Hussain, G. Hylen, J. Irwin, G. M. Isvan, Z. and Jaffe, D. E. Jaffke, P. James, C. Jen, K. L. Jensen, D. and Jetter, S. Ji, X. L. Ji, X. P. Jiao, J. B. Johnson, R. A. de Jong, J. K. Joshi, J. Kafka, T. Kang, L. and Kasahara, S. M. S. Kettell, S. H. Kohn, S. Koizumi, G. and Kordosky, M. Kramer, M. Kreymer, A. Kwan, K. K. Kwok, M. W. Kwok, T. Lang, K. Langford, T. J. Lau, K. and Lebanowski, L. Lee, J. Lee, J. H. C. Lei, R. T. Leitner, R. Leung, J. K. C. Li, C. Li, D. J. Li, F. Li, G. S. and Li, Q. J. Li, S. Li, S. C. Li, W. D. Li, X. N. and Li, Y. F. Li, Z. B. Liang, H. Lin, C. J. Lin, G. L. and Lin, S. Lin, S. K. Lin, Y. -C. Ling, J. J. Link, J. M. and Litchfield, P. J. Littenberg, L. Littlejohn, B. R. Liu, D. W. Liu, J. C. Liu, J. L. Loh, C. W. Lu, C. Lu, H. Q. Lu, J. S. Lucas, P. Luk, K. B. Lv, Z. Ma, Q. M. and Ma, X. B. Ma, X. Y. Ma, Y. Q. Malyshkin, Y. Mann, W. A. Marshak, M. L. Caicedo, D. A. Martinez Mayer, N. and McDonald, K. T. McGivern, C. McKeown, R. D. Medeiros, M. M. and Mehdiyev, R. Meier, J. R. Messier, M. D. Miller, W. H. and Mishra, S. R. Mitchell, I. Mooney, M. Moore, C. D. and Mualem, L. Musser, J. Nakajima, Y. Naples, D. and Napolitano, J. Naumov, D. Naumova, E. Nelson, J. K. and Newman, H. B. Ngai, H. Y. Nichol, R. J. Ning, Z. Nowak, J. A. O'Connor, J. Ochoa-Ricoux, J. P. Olshevskiy, A. and Orchanian, M. Pahlka, R. B. Paley, J. Pan, H. -R. Park, J. Patterson, R. B. Patton, S. Pawloski, G. Pec, V. and Peng, J. C. Perch, A. Pfuetzner, M. M. Phan, D. D. and Phan-Budd, S. Pinsky, L. Plunkett, R. K. Poonthottathil, N. and Pun, C. S. J. Qi, F. Z. Qi, M. Qian, X. Qiu, X. and Radovic, A. Raper, N. Rebel, B. Ren, J. Rosenfeld, C. and Rosero, R. Roskovec, B. Ruan, X. C. Rubin, H. A. and Sail, P. Sanchez, M. C. Schneps, J. Schreckenberger, A. and Schreiner, P. Sharma, R. Sher, S. Moed Sousa, A. and Steiner, H. Sun, G. X. Sun, J. L. Tagg, N. Talaga, R. L. and Tang, W. Taychenachev, D. Thomas, J. Thomson, M. A. and Tian, X. Timmons, A. Todd, J. Tognini, S. C. Toner, R. and Torretta, D. Treskov, K. Tsang, K. V. Tull, C. E. and Tzanakos, G. Urheim, J. Vahle, P. Viaux, N. Viren, B. and Vorobel, V. Wang, C. H. Wang, M. Wang, N. Y. Wang, R. G. Wang, W. Wang, X. Wang, Y. F. Wang, Z. Wang, Z. M. Webb, R. C. Weber, A. Wei, H. Y. Wen, L. J. and Whisnant, K. White, C. Whitehead, L. Whitehead, L. H. and Wise, T. Wojcicki, S. G. Wong, H. L. H. Wong, S. C. F. and Worcester, E. Wu, C. -H. Wu, Q. Wu, W. J. Xia, D. M. and Xia, J. K. Xing, Z. Z. Xu, J. L. Xu, J. Y. Xu, Y. and Xue, T. Yang, C. G. Yang, H. Yang, L. Yang, M. S. and Yang, M. T. Ye, M. Ye, Z. Yeh, M. Young, B. L. Yu, Z. Y. Zeng, S. Zhan, L. Zhang, C. Zhang, H. H. and Zhang, J. W. Zhang, Q. M. Zhang, X. T. Zhang, Y. M. and Zhang, Y. X. Zhang, Z. J. Zhang, Z. P. Zhang, Z. Y. and Zhao, J. Zhao, Q. W. Zhao, Y. B. Zhong, W. L. Zhou, L. and Zhou, N. Zhuang, H. L. Zou, J. H. Daya Bay Collaboration and MINOS Collaboration

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract

Searches for a light sterile neutrino have been performed independently by the MINOS and the Daya Bay experiments using the muon (anti) neutrino and electron antineutrino disappearance channels, respectively. In this Letter, results from both experiments are combined with those from the Bugey-3 reactor neutrino experiment to constrain oscillations into light sterile neutrinos. The three experiments are sensitive to complementary regions of parameter space, enabling the combined analysis to probe regions allowed by the Liquid Scintillator Neutrino Detector (LSND) and MiniBooNE experiments in a minimally extended four-neutrino flavor framework. Stringent limits on sin(2) 2 theta(mu e) are set over 6 orders of magnitude in the sterile mass-squared splitting Delta m(41)(2). The sterile-neutrino mixing phase space allowed by the LSND and MiniBooNE experiments is excluded for Delta m(41)(2) < 0.8 eV(2) at 95% CLs.

Published
2016

10. Synthesis and transport properties of Si-doped In2O3(ZnO)3 superlattice nanobelts.

Author

J. Y. Zhang, Y. Lang, Z. Q. Chu, X. Liu, L. L. Wu, and X. T. Zhang

Subjects
ZINC oxide, INDIUM compounds, SUPERLATTICES, CHEMICAL vapor deposition, TRANSMISSION electron microscopy, ELECTRIC potential, SILICON, NANOTECHNOLOGY, CONDUCTION bands
Abstract

Si-doped In2O3(ZnO)3superlattice nanobelts were synthesized viachemical vapor deposition. The transmission electron microscopy result indicates that the nanobelts have a superlattice structure. The introduced Si in In2O3(ZnO)3nanobelts could exist as SiZnas donor dopants, leading to a low resistivity of 6.25 × 10−3Ω cm. The transport properties of the nanobelts were measured. A nonlinear I–Vcharacteristic is found in a voltage span of 0.4–1.5 V, which is likely attributed to the superlattice structure with statistical potential distribution around the conduction band edge. [ABSTRACT FROM AUTHOR]

Published
2011
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11. High-yield synthesis of In2−xGaxO3(ZnO)3nanobelts with a planar superlattice structure.

Author

L. L. Wu, F. W. Liu, Z. Q. Chu, Y. Liang, H. Y. Xu, H. Q. Lu, X. T. Zhang, Quan Li, and S. K. Hark

Subjects
NANOSTRUCTURES, ZINC oxide, INORGANIC synthesis, X-ray diffraction, CROSS-sectional method, WURTZITE, SUPERLATTICES
Abstract

Homologous compound In2−xGaxO3(ZnO)3(x 0.18) nanobelts were successfully synthesized in high yield by a simple thermal vapour method for the first time. Two sets of peaks appear in X-ray diffraction pattern. One is attributed to wurtzite ZnO, while the other is indexed to rhombohedral In2−xGaxO3(ZnO)3(x 0.18) with lattice constants a= 0.335 nm and c= 4.24 ± 0.01 nm within experimental errors. Cross-section high-resolution transmission electron microscopy observations and XRD data confirmed the formation of a planar superlattice structure in the nanobelts, which consists of alternate stacking of In–O layers and In1−xGax/Zn–O blocks along the [0001] direction, which is normal to the growth direction, leading to the (0001) plane as a surface. [ABSTRACT FROM AUTHOR]

Published
2010
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12. Wurtzite ZnSe nanowires: growth, photoluminescence, and single-wire Raman properties.

Author

C X Shan, Z Liu, X T Zhang, C C Wong, and S K Hark

Subjects
NANOWIRES, RAMAN effect, TRANSMISSION electron microscopy, PHOTOLUMINESCENCE
Abstract

Wurtzite ZnSe nanowires were prepared on GaAs substrates in a metal-organic chemical vapour deposition system. Electron microscopy shows that they are smooth and uniform in size. Both transmission electron microscopy and x-ray diffraction reveal the wurtzite structure of the nanowires, which grows along the direction. Raman scattering studies on individual nanowires were performed in the back-scattering geometry at room temperature. Besides the commonly observed longitudinal and transverse optical phonon modes, a possible surface mode located at 233?cm?1is also observed in the Raman spectrum. A peak located at 2.841?eV was clearly observed in the photoluminescence spectra of the nanowires, which can be assigned to near band edge emissions of wurtzite ZnSe. [ABSTRACT FROM AUTHOR]

Published
2006
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13. Co3O4 hollow nanospheres/carbon-assembled mesoporous polyhedron with internal bubbles encapsulating TiO2 nanosphere for high-performance lithium ion batteries.

Author

L Wang, Y F Yuan, X T Zhang, Q Chen, and S Y Guo

Subjects
LITHIUM-ion batteries, POLYHEDRA, BUBBLES, ELECTRON diffusion, SPACE (Architecture), CHARGE exchange
Abstract

Co3O4 hollow nanospheres 15 nm in the diameter were assembled to the mesoporous polyhedron together with carbon. Within the Co3O4 polyhedrons, the bubbles 300–500 nm in diameter were uniformly generated. Every bubble further encapsulated one TiO2 nanosphere, forming a unique sphere-bubble structure. The specific surface area and the pore volume were calculated to be 97.85 and 0.31 cm3 g−1. When evaluated as anode material for lithium ion batteries, the as-prepared material exhibited superior lithium storage properties with high specific capacity, excellent cycling stability and good rate capability. After 400 cycles, the discharge capacity of 609 mAh g−1 was still delivered at current density of 335 mA g−1. Even at a high current density of 2000 mA g−1, the reversible capacity reached 296 mAh g−1. The outstanding electrochemical performance was attributed to the unique hybrid structure, which avoids nanomaterial aggregation, promotes ion diffusion and electron transfer, accommodates volume change of Co3O4 during (de)lithiation process, enhances structure strength, cycling stability and space utilization ratio of the hollow material. [ABSTRACT FROM AUTHOR]

Published
2019
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15. Growth of novel ZnO nanohelices modified by SiO2-sheathed ZnO discs.

Author

H Gao, X T Zhang, M Y Zhou, Z G Zhang, and X Z Wang

Subjects
*EVAPORATION (Chemistry), *NANOWIRES, *CRYSTALS, *ZINC oxide
Abstract

Disc-modified nanohelices (DNHs) of ZnO were synthesized by thermal evaporation. The ZnO DNHs are constructed by nanowires which are regularly attached with discs. The axis of the DNH structure is along the ZnO[0001] direction. The pitch distance, the mean diameter, and the thickness of the nanowires are uniform for each ZnO DNH. Within one period there are 12 discs symmetrically attached on the surfaces of the nanowires. The discs are composed of nanometre-sized ZnO crystal cores and amorphous SiO2shells. The mechanism of formation of the nanostructures is also discussed. [ABSTRACT FROM AUTHOR]

Published
2007

16. Observation of superconductivity and anomalous electrical resistivity in single-crystal Ir3Te8.

Author

L. Li, T. F. Qi, L. S. Lin, X. X. Wu, X. T. Zhang, Butrouna, K., V. S. Cao, Y. H. Zhang, Jiangping Hu, S. J. Yuan, Schlottmann, P., De Long, L. E., and G. Cao

Subjects
*SUPERCONDUCTIVITY, *ELECTRIC conductivity, *SINGLE crystals, *PARAMAGNETISM, *PHASE transitions
Abstract

We observe an unusual combination of normal and superconducting state properties without any signature of strong spin fluctuations in single-crystal Ir3Te8. The electrical resistivity does not saturate by 700 K but exhibits a low-resistivity ratio, and it exhibits two extended linear regimes (approximately 20-330 and 370-700 K) with the same slope, separated by a small hysteretic interval marking a strong first-order phase transition from cubic to rhombohedral lattice symmetry at Ts = 350 K. The electronic heat-capacity coefficient (11 mJ mol-1 K-2) is consistent with a net diamagnetic, rather than a Pauli paramagnetic, normal state that yields to superconductivity below a critical temperature Tc = 1.8 K. The size of the heat-capacity jump near Tc indicates bulk superconductivity. [ABSTRACT FROM AUTHOR]

Published
2013
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17. Spatio-temporal distribution and biotechnological potential of culturable yeasts in the intertidal sediments and seawater of Aoshan Bay, China.

Author

Xue S-J, Liu J, Zhao F-Y, Zhang X-T, Zhu Z-Q, and Zhang J-Y

Subjects
China, Biodiversity, Biotechnology, Spatio-Temporal Analysis, Ecosystem, Microbiota, Geologic Sediments microbiology, Seawater microbiology, Yeasts genetics, Yeasts classification, Yeasts isolation & purification, Yeasts metabolism, Bays microbiology
Abstract

Marine yeasts play a crucial role in marine microbial ecology, facilitating the biogeochemical cycling of carbon and nitrogen in marine ecosystems, while also serving as important reservoirs of bioactive compounds with extensive applications in pharmaceuticals, agriculture, and various industries. Intertidal flats, characterized by their complex ecological dynamics, are postulated to harbor a wealth of yeast resources. This study employed a culture-dependent approach to assess the diversity, spatio-temporal distribution, and biotechnological potential of yeast communities residing within the intertidal sediments and seawater of Aoshan Bay. A total of 392 yeast strains were identified from 20 distinct genera, encompassing 43 recognized species and four candidate novel species. Notably, 17 of these species were identified as novel occurrences in marine environments, underscoring the rich yeast biodiversity of the Aoshan Bay ecosystem, with Candida emerging as the dominant genus in both sedimentary and aqueous habitats. Yeast community composition exhibited significant spatial and temporal variation, with peak diversity and abundance observed in autumn, the subtidal zone, and the surface soil layer. No clear pattern, however, emerged linking these shifts to specific changes in community composition, highlighting the complex interactions between microbial communities, environmental variables, and anthropogenic disturbance. Although several yeast species isolated here have been previously recognized for their biotechnological potential, their diverse and abundant extracellular enzyme profiles were characterized, further highlighting their crucial role in organic matter decomposition and nutrient cycling within the tidal ecosystem, as well as their potential applicability in the food, fine chemical, textile, and pharmaceutical industries.IMPORTANCEThis study presents groundbreaking insights into the yeast diversity of Aoshan Bay, offering invaluable information on their spatial and temporal distribution patterns, as well as their biotechnological potential in the tidal environment. The findings reveal that the eutrophic intertidal flat is a rich repository of yeasts with abundant extracellular enzymatic activity and an important role in nutrient cycling and decomposition processes. Also, these yeasts serve as crucial indicators of ecosystem health and function and are excellent candidates for biotechnological and industrial applications. Collectively, this study not only expands our knowledge of the diversity and distribution of intertidal yeasts but also highlights their promising potential for biotechnological applications., Competing Interests: The authors declare no conflict of interest.

Published
2024
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18. Effects of antibiotic and disinfectant exposure on the mouse gut microbiome and immune function.

Author

Xu W-B, Wang Y-F, Meng S-Y, Zhang X-T, Wang Y-R, and Liu Z-Y

Subjects
Animals, Mice, Gram-Positive Bacteria drug effects, Gram-Negative Bacteria drug effects, Bacteria drug effects, Bacteria classification, Bacteria genetics, Bacteria isolation & purification, Gastrointestinal Microbiome drug effects, Disinfectants pharmacology, Disinfectants adverse effects, Anti-Bacterial Agents pharmacology, Anti-Bacterial Agents adverse effects
Abstract

This study explores the effects of disinfectant and antibiotic exposure on gut health, focusing on gut microbiota balance and gut immune function. Our analysis indicates that disinfectants increase the proportion of Gram-positive bacteria, particularly increasing Staphylococcus levels, while antibiotics increase the proportion of Gram-negative bacteria, especially Bacteroides levels. These changes disrupt microbial harmony and affect the gut microbiome's functional capacity. Additionally, our research reveals that both disinfectants and antibiotics reduce colon length and cause mucosal damage. A significant finding is the downregulation of NLRC4 , a key immune system regulator in the gut, accompanied by changes in immune factor expression. This interaction between chemical exposure and immune system dysfunction increases susceptibility to inflammatory bowel disease and other gut conditions. Given the importance of disinfectants in disease prevention, this study advocates for a balanced approach to their use, aiming to protect public health while minimizing adverse effects on the gut microbiome and immune function., Importance: Disinfectants are extensively employed across various sectors, such as the food sector. Disinfectants are widely used in various sectors, including the food processing industry, animal husbandry, households, and pharmaceuticals. Their extensive application risks environmental contamination, impacting water and soil quality. However, the effect of disinfectant exposure on the gut microbiome and the immune function of animals remains a significant, unresolved issue with profound public health implications. This highlights the need for increased scrutiny and more regulated use of disinfectants to mitigate unintended consequences on gut health and maintain immune system integrity., Competing Interests: The authors declare no conflict of interest.

Published
2024
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