Search for supermassive relics

S. Nakamura; Kiyotomo Kawagoe; K. Yamamoto; S. Orito; H. Ichinose; T. Doke; T. Hayashi; H. Tawara; K. Ogura

doi:10.1016/0370-2693(87)90985-3

Search for supermassive relics

S. Nakamura, Kiyotomo Kawagoe, K. Yamamoto, S. Orito, H. Ichinose, T. Doke, T. Hayashi, H. Tawara, K. Ogura

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Abstract

We have conducted an underground search for supermassive relic particles by an 80 m² array consisting of three layers of track detector CR-39. The non-observation of penetrating tracks places the velocity-dependent flux upper limits down to 2 × 10^-14 cm^-2 s ^-1 sr^-1 for various electrically or magnetically charged particles under assumptions on their energy losses in the low- velocity region. Assuming that the nuclear recoils are effective to the track formation of CR-39, this experiment sets the best flux limits for such relic particles in the velocity region 4 × 10^-5 <β<2 × 10^-4.

Original language	English
Pages (from-to)	395-399
Number of pages	5
Journal	Physics Letters B
Volume	183
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(87)90985-3
Publication status	Published - Jan 15 1987
Externally published	Yes

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All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Cite this

Nakamura, S., Kawagoe, K., Yamamoto, K., Orito, S., Ichinose, H., Doke, T., ... Ogura, K. (1987). Search for supermassive relics. Physics Letters B, 183(3-4), 395-399. https://doi.org/10.1016/0370-2693(87)90985-3

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AU - Nakamura, S.

AU - Kawagoe, Kiyotomo

AU - Yamamoto, K.

AU - Orito, S.

AU - Ichinose, H.

AU - Doke, T.

AU - Hayashi, T.

AU - Tawara, H.

AU - Ogura, K.

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10.1016/0370-2693(87)90985-3