@article{68b54325ea134ad2b406de74e122f5ee,
title = "Search for exotic neutrino-electron interactions using solar neutrinos in XMASS-I",
abstract = "We have searched for exotic neutrino-electron interactions that could be produced by a neutrino millicharge, by a neutrino magnetic moment, or by dark photons using solar neutrinos in the XMASS-I liquid xenon detector. We observed no significant signals in 711 days of data. We obtain an upper limit for neutrino millicharge of 5.4×10−12e at 90% confidence level assuming all three species of neutrino have common millicharge. We also set flavor-dependent limits assuming the respective neutrino flavor is the only one carrying a millicharge, 7.3×10−12e for νe, 1.1×10−11e for νμ, and 1.1×10−11e for ντ. These limits are the most stringent yet obtained from direct measurements. We also obtain an upper limit for the neutrino magnetic moment of 1.8×10−10 Bohr magnetons. In addition, we obtain upper limits for the coupling constant of dark photons in the U(1)B−L model of 1.3×10−6 if the dark photon mass is 1×10−3 MeV/c2, and 8.8×10−5 if it is 10 MeV/c2.",
keywords = "Dark photon, Liquid xenon, Low background, Magnetic moment, Millicharge, Neutrino",
author = "K. Abe and Y. Chen and K. Hiraide and K. Ichimura and S. Imaizumi and N. Kato and K. Kobayashi and M. Kobayashi and S. Moriyama and M. Nakahata and K. Sato and H. Sekiya and T. Suzuki and A. Takeda and S. Tasaka and M. Yamashita and Yang, {B. S.} and Kim, {N. Y.} and Kim, {Y. D.} and Kim, {Y. H.} and R. Ishii and Y. Itow and K. Kanzawa and K. Martens and A. Mason and Y. Suzuki and K. Miuchi and Y. Takeuchi and Lee, {K. B.} and Lee, {M. K.} and Y. Fukuda and H. Ogawa and Y. Kishimoto and K. Nishijima and K. Fushimi and Xu, {B. D.} and S. Nakamura",
note = "Funding Information: We thank Masahiro Ibe and Tsutomu Kakizaki for useful discussion about theoretical framework. Also we thank Yusuke Koshio for survival probability calculation for solar neutrino. We gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology , the joint research program of the Institute for Cosmic Ray Research (ICRR), the University of Tokyo , Institute for Basic Science ( IBS-R017-G1-2020-a00 ), Grant-in-Aid for Scientific Research, JSPS KAKENHI Grant No. 19GS0204 , 26104004 , and 19H05805 and partially by the National Research Foundation of Korea Grant funded by the Korean Government ( NRF-2011-220-C00006 ). Funding Information: We thank Masahiro Ibe and Tsutomu Kakizaki for useful discussion about theoretical framework. Also we thank Yusuke Koshio for survival probability calculation for solar neutrino. We gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the joint research program of the Institute for Cosmic Ray Research (ICRR), the University of Tokyo, Institute for Basic Science (IBS-R017-G1-2020-a00), Grant-in-Aid for Scientific Research, JSPS KAKENHI Grant No. 19GS0204, 26104004, and 19H05805 and partially by the National Research Foundation of Korea Grant funded by the Korean Government (NRF-2011-220-C00006). Publisher Copyright: {\textcopyright} 2020 The Author(s)",
year = "2020",
month = oct,
day = "10",
doi = "10.1016/j.physletb.2020.135741",
language = "English",
volume = "809",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}