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Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV

Publication ,  Journal Article
Collaboration, S-K; Abe, K; Bronner, C; Hayato, Y; Ikeda, M; Imaizumi, S; Ito, H; Kameda, J; Kataoka, Y; Miura, M; Moriyama, S; Nagao, Y ...
December 14, 2020

Due to a very low production rate of electron anti-neutrinos ($\bar{\nu}_e$) via nuclear fusion in the Sun, we expect to see $\bar{\nu}_e$ from other contribution. An appearance of $\bar{\nu}_e$ in solar neutrino flux opens a new window for the new physics beyond the standard model. In particular, a spin-flavor precession process is expected to convert an electron neutrino into an electron anti-neutrino (${\nu_e\to\bar{\nu}_e}$) if neutrino has a finite magnetic moment. In this work, we have searched for solar $\bar{\nu}_e$ in the Super-Kamiokande experiment, using neutron tagging to identify their inverse beta decay signature. We identified 78 $\bar{\nu}_e$ candidates for neutrino energies of 9.3 to 17.3 MeV in 2970.1 live days with a fiducial volume of 22.5 kiloton water (183.0 kton$\cdot$year exposure). The energy spectrum has been consistent with background predictions and we thus derived a 90\% confidence level upper limit of ${3.6\times10^{-4}}$ on the $\nu_e\to\bar{\nu}_e$ conversion probability in the Sun. We used this result to evaluate the sensitivity of future experiments, notably the Super-Kamiokande Gadolinium (SK-Gd) upgrade.

Duke Scholars

Publication Date

December 14, 2020

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Collaboration, S.-K., Abe, K., Bronner, C., Hayato, Y., Ikeda, M., Imaizumi, S., … Posiadala-Zezula, M. (2020). Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV.
Collaboration, Super-Kamiokande, K. Abe, C. Bronner, Y. Hayato, M. Ikeda, S. Imaizumi, H. Ito, et al. “Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV,” December 14, 2020.
Collaboration S-K, Abe K, Bronner C, Hayato Y, Ikeda M, Imaizumi S, et al. Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV. 2020 Dec 14;
Collaboration S-K, Abe K, Bronner C, Hayato Y, Ikeda M, Imaizumi S, Ito H, Kameda J, Kataoka Y, Miura M, Moriyama S, Nagao Y, Nakahata M, Nakajima Y, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Suzuki Y, Takeda A, Takemoto Y, Takenaka A, Tanaka H, Yano T, Akutsu R, Han S, Kajita T, Okumura K, Tashiro T, Wang R, Xia J, Bravo-Berguño D, Labarga L, Marti L, Zaldivar B, Blaszczyk FDM, Kearns E, Raaf JL, Stone JL, Wan L, Wester T, Pointin BW, Bian J, Griskevich NJ, Kropp WR, Locke S, Mine S, Smy MB, Sobel HW, Takhistov V, Weatherly P, Hill J, Kim JY, Lim IT, Park RG, Bodur B, Scholberg K, Walter CW, Bernard L, Coffani A, Drapier O, Hedri SE, Giampaolo A, Gonin M, Mueller TA, Paganini P, Quilain B, Ishizuka T, Nakamura T, Jang JS, Learned JG, Anthony LHV, Sztuc AA, Uchida Y, Berardi V, Catanesi MG, Radicioni E, Calabria NF, Machado LN, Rosa GD, Collazuol G, Iacob F, Lamoureux M, Ospina N, Ludovici L, Nishimura Y, Cao S, Friend M, Hasegawa T, Ishida T, Jakkapu M, Kobayashi T, Matsubara T, Nakadaira T, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Nakano Y, Shiozawa T, Suzuki AT, Takeuchi Y, Yamamoto S, Ali A, Ashida Y, Feng J, Hirota S, Ichikawa AK, Kikawa T, Mori M, Nakaya T, Wendell RA, Yasutome Y, Fernandez P, McCauley N, Mehta P, Pritchard A, Tsui KM, Fukuda Y, Itow Y, Menjo H, Niwa T, Sato K, Tsukada M, Mijakowski P, Jung CK, Vilela C, Wilking MJ, Yanagisawa C, Harada M, Hagiwara K, Horai T, Ishino H, Ito S, Koshio Y, Ma W, Piplani N, Sakai S, Kuno Y, Barr G, Barrow D, Cook L, Goldsack A, Samani S, Simpson C, Wark D, Nova F, Boschi T, Lodovico FD, Taani M, Migenda J, Sedgwick SM, Zsoldos S, Yang JY, Jenkins SJ, Malek M, McElwee JM, Stone O, Thiesse MD, Thompson LF, Okazawa H, Kim SB, Yu I, Nishijima K, Koshiba M, Iwamoto K, Ogawa N, Yokoyama M, Martens K, Vagins MR, Izumiyama S, Kuze M, Tanaka M, Yoshida T, Inomoto M, Ishitsuka M, Matsumoto R, Ohta K, Shinoki M, Martin JF, Tanaka HA, Towstego T, Hartz M, Konaka A, Perio PD, Prouse NW, Chen S, Xu BD, Richards B, Jamieson B, Walker J, Minamino A, Pintaudi G, Sasaki R, Posiadala-Zezula M. Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV. 2020 Dec 14;

Publication Date

December 14, 2020

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences