SEARCH FOR NUCLEARITES USING TLS DETECTOR AT SEA LEVEL

T.Wada [1], Y.Akitsu [1], K.Iwata [6], S.Lan [1], M.Nakagawa [4], T.Nakatsuka [2], K. Okei [1], O.Saavedra [7], N.Takahashi [5], S.Tsuji [3], J.Ryou [1], I.Yamamoto [4],

Y. Yamashita [1]

1.Department of Physics, Okayama University, Okayama 700-8530, Japan2.Okayama Shoka University, Okayama 700-8601, Japan3.Department of Information Sciences, Kawasaki Medical School, Kurashiki 701-0192, Japan4.Okayama University of Science, Okayama 700-0005, Japan5.Hirosaki University, Hirosaki 036-8561, Japan6.Nara Medical University, Kashihara 6340813 Japan7.General Physics Department, University of Torino , 10125 Torino, Italy

ⅩⅢ ISVECRI 6-12 September 2004 at the NESTOR Institute

A. De Rujula &S. L. GrashowNature 312 1984

Our results (TL-stacks) 5.6x10-14 cm-2s-1sr-1

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At Gran Sasso ( M > 1015 GeV/c2) MACRO (0.1> β > 1.1× 10-4 ) 1.0x10-15 cm-2s-1sr-1

Our results (TL-stacks) 5.6x10-14 cm-2s-1sr-

1

ConclusionThe 90% CL upper limit for the negative result β＝ 10-3

At sea level

GWD ( M >3×1011 GeV/c2) Astone et al. 1.8×10-12 cm-2s-1sr-1

This work ( M >2×1012 GeV/c2) 3.9×10-13 cm-2s-1sr-1