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High-Altitude Time-of-Flight Search for Non-Weakly Interacting Dark Matter in Cosmic Rays

McGuire, P. and Bowen, T. and Barbier, L. M. and Christian, E. R. and Golden, R. L. and Kimbell, B. and Labrador, A. W. and Mewaldt, R. A. and Menn, W. and Mitchell, J. W. and Reimer, O. and Schindler, S. M. and Simon, M. and Stochaj, S. J. and Streitmatter, R. E. (1993) High-Altitude Time-of-Flight Search for Non-Weakly Interacting Dark Matter in Cosmic Rays. In: Proceedings of the 23rd International Cosmic Ray Conference. Vol.4. World Scientific , Singapore, pp. 621-624.

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Supermassive electrically- or strongly-charged particles might constitute the missing matter in the galaxy. These particles would be non-relativistic, but nevertheless if these hypothetical particles have high enough mass, they might have enough momentum to be detectable below 5 g/cm^2 of atmosphere. We apply the time-of-flight technique to search for these hypothetical slow-moving, supermassive, highly-interacting particles at balloon altitude. We present un-cut histograms and a scatterplot of actual flight data, showing that we can account for most of the events as accidental coincidences. We can reject most (if not all) of these accidental coincidences by requiring a 4-counter coincidence, and by requiring very small changes in velocity in the interior detectors.

Item Type:Book Section
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URLURL TypeDescription
Christian, E. R.0000-0003-2134-3937
Labrador, A. W.0000-0001-9178-5349
Mewaldt, R. A.0000-0003-2178-9111
Additional Information:Copyright University of Calgary. Provided by the NASA Astrophysics Data System. We would like to thank T. Metcalfe, P. Halverson, R. Norton, A. Pifer, L.Russo, J. Pando, R. Hall, D. Righter, R. Park, G. Albritton, S. Holder, M. Simon, 0. Reimer, W. Menn, B.Kimbell, R. Golden, and "Max" for their assistance in preparing for the balloon flight, and the University of Arizona Experimental Elementary Particles Group for access to their more-than-adequate VAX-cluster for post-flight data analysis. A U.S. Dept. of Education/NSF fellowship supported P. McGuire for much of the pre-flight preparations. This work is also supported by NSF Grant 91-21427.
Group:Space Radiation Laboratory
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Space Radiation Laboratory1993-20
Record Number:CaltechAUTHORS:20141021-163735747
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50649
Deposited By: Deborah Miles
Deposited On:24 Oct 2014 16:04
Last Modified:09 Mar 2020 13:18

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