TY - JOUR
T1 - Search for supermassive relics
AU - Nakamura, S.
AU - Kawagoe, K.
AU - Yamamoto, K.
AU - Orito, S.
AU - Ichinose, H.
AU - Doke, T.
AU - Hayashi, T.
AU - Tawara, H.
AU - Ogura, K.
PY - 1987/1/15
Y1 - 1987/1/15
N2 - 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.
AB - 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.
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U2 - 10.1016/0370-2693(87)90985-3
DO - 10.1016/0370-2693(87)90985-3
M3 - Article
AN - SCOPUS:45949126231
VL - 183
SP - 395
EP - 399
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 3-4
ER -