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A search for new massive particles |
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| Authors: | R Vidal SW Herb LM Lederman HD Snyder JK Yoh CN Brown WR Innes RD Kephart K Ueno T Yamanouchi DM Kaplan AS Ito H Jöstlein W Smith |
| Institution: | Columbia University, New York, NY 10027, USA;Fermi National Accelerator Laboratory, Batavia, IL 60510, USA;State niversity of New York atStony Brook, Stony Brook, NY 11794, USA;University of California, Berkeley, CA 94720, USA |
| Abstract: | We have searched for an almost stable, charged particle produced in 400 GeV proton-nucleus collisions. A total of 5 × 1010 light secondary particles were sampled in a secondary beam of 70 GeV/c momentum. If a 4.5 to 6.0 GeV mass particle is produced with a cross section comparable with the production cross section of the upsilon then this experiment places an upper limit on the lifetime of such a particle of about 5 × 10?8 s. |
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