An underground search for anomalous penetrating particles such as massive magnetic monopoles

T. Mashimo, S. Orito, K. Kawagoe, S. Nakamura, M. Nozaki

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

We have searched for anomalous cosmic-ray particles in a wide velocity range (3 × 10-4 < β < 1) by accurately measuring the time of flight and the dE/dx of downward and upward particle with six layers of scintillator hodoscopes placed 250 m underground. No anomalous candidate has been found other than the relativistic muons, setting an upper limit on the flux of 1.5 × 10-12 cm-12 s-2 sr-1 for magnetic monopoles in the velocity range 6 × 10-4 < β < 1. Similar upper limits on the flux are obtained also for slow massive integrally- or fractionally-charged particles and also for relativistic fractionally-charged leptons.

Original languageEnglish
Pages (from-to)327-332
Number of pages6
JournalPhysics Letters B
Volume128
Issue number5
DOIs
Publication statusPublished - Sep 1 1983
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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