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Search for dinucleon decay into pions at Super-Kamiokande

Publication ,  Journal Article
Gustafson, J; Abe, K; Haga, Y; Hayato, Y; Ikeda, M; Iyogi, K; Kameda, J; Kishimoto, Y; Miura, M; Moriyama, S; Nakahata, M; Nakajima, T ...
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
2015

© 2015 American Physical Society.A search for dinucleon decay into pions with the Super-Kamiokande detector has been performed with an exposure of 282.1 kiloton-years. Dinucleon decay is a process that violates baryon number by two units. We present the first search for dinucleon decay to pions in a large water-Cherenkov detector. The modes O16(pp)→C14π+π+, O16(pn)→N14π+π0, and O16(nn)→O14π0π0 are investigated. No significant excess in the Super-Kamiokande data has been found, so a lower limit on the lifetime of the process per oxygen nucleus is determined. These limits are τpp→π+π+>7.22×1031years, τpn→π+π0>1.70×1032years, and τnn→π0π0>4.04×1032years. The lower limits on each mode are about 2 orders of magnitude better than previous limits from searches for dinucleon decay in iron.

Duke Scholars

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

ISSN

1550-7998

Publication Date

2015

Volume

91

Issue

7

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

APA
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ICMJE
MLA
NLM
Gustafson, J., Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., … Wilkes, R. J. (2015). Search for dinucleon decay into pions at Super-Kamiokande. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91(7). https://doi.org/10.1103/PhysRevD.91.072009
Gustafson, J., K. Abe, Y. Haga, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, et al. “Search for dinucleon decay into pions at Super-Kamiokande.” Physical Review D - Particles, Fields, Gravitation and Cosmology 91, no. 7 (2015). https://doi.org/10.1103/PhysRevD.91.072009.
Gustafson J, Abe K, Haga Y, Hayato Y, Ikeda M, Iyogi K, et al. Search for dinucleon decay into pions at Super-Kamiokande. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015;91(7).
Gustafson, J., et al. “Search for dinucleon decay into pions at Super-Kamiokande.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 91, no. 7, 2015. Scival, doi:10.1103/PhysRevD.91.072009.
Gustafson J, Abe K, Haga Y, Hayato Y, Ikeda M, Iyogi K, Kameda J, Kishimoto Y, Miura M, Moriyama S, Nakahata M, Nakajima T, Nakano Y, Nakayama S, Orii A, Sekiya H, Shiozawa M, Takeda A, Tanaka H, Tomura T, Wendell RA, Irvine T, Kajita T, Kametani I, Kaneyuki K, Nishimura Y, Richard E, Okumura K, Labarga L, Fernandez P, Berkman S, Tanaka HA, Tobayama S, Kearns E, Raaf JL, Stone JL, Sulak LR, Goldhaber M, Carminati G, Kropp WR, Mine S, Weatherly P, Renshaw A, Smy MB, Sobel HW, Takhistov V, Ganezer KS, Hartfiel BL, Hill J, Hong N, Kim JY, Lim IT, Akiri T, Himmel A, Scholberg K, Walter CW, Wongjirad T, Ishizuka T, Tasaka S, Jang JS, Learned JG, Matsuno S, Smith SN, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Suzuki AT, Takeuchi Y, Yano T, Hirota S, Huang K, Ieki K, Kikawa T, Minamino A, Nakaya T, Suzuki K, Takahashi S, Fukuda Y, Choi K, Itow Y, Mitsuka G, Suzuki T, Mijakowski P, Hignight J, Imber J, Jung CK, Palomino JL, Yanagisawa C, Ishino H, Kayano T, Kibayashi A, Koshio Y, Mori T, Sakuda M, Kuno Y, Tacik R, Kim SB, Okazawa H, Choi Y, Nishijima K, Koshiba M, Suda Y, Totsuka Y, Yokoyama M, Bronner C, Martens K, Marti L, Suzuki Y, Vagins MR, Martin JF, Perio PD, Konaka A, Wilking MJ, Chen S, Zhang Y, Wilkes RJ. Search for dinucleon decay into pions at Super-Kamiokande. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015;91(7).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

ISSN

1550-7998

Publication Date

2015

Volume

91

Issue

7

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences