Ultrahigh energy cosmic ray composition from surface air shower and underground muon measurements at Soudan 2

N. P. Longley, C. R. Bode, P. M. Border, H. Courant, D. M. Demuth, R. N. Gray, K. Johns, S. M.S. Kasahara, M. J. Lowe, M. L. Marshak, W. H. Miller, L. Mualem, E. A. Peterson, D. M. Roback, K. Ruddick, D. J. Schmid, M. H. Schub, M. A. Shupe, V. Vassiliev, G. VillaumeS. J. Werkema, D. S. Ayres, T. H. Fields, H. M. Gallagher, M. C. Goodman, F. V. Lopez, E. N. May, L. E. Price, R. V. Seidlein, J. L. Thron, H. J. Trost, J. L. Uretsky, W. W.M. Allison, G. D. Barr, C. B. Brooks, J. H. Cobb, G. L. Giller, A. Stassinakis, M. A. Thomson, N. West, U. Wielgosz, G. J. Alner, D. J.A. Cockerill, R. J. Cotton, C. Garcia-Garcia, P. J. Litchfield, G. F. Pearce, B. Ewen, T. Kafka, J. Kochocki, W. Leeson, W. A. Mann, R. H. Milburn, A. Napier, W. Oliver, B. Saitta, J. Schneps, N. Sundaralingam, W. L. Barrett

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

The Soudan 2 experiment has performed time-coincident cosmic ray air shower and underground muon measurements. Comparisons to Monte Carlo predictions show that such measurements can make statistically significant tests of the primary composition in the knee region of the cosmic ray spectrum. The results do not support any significant increase in the average primary mass with energy in the range of 104 TeV per nucleus. Some systematic uncertainties remain, however, particularly in the Monte Carlo modeling of the cosmic ray shower.

Original languageEnglish (US)
Pages (from-to)2760-2765
Number of pages6
JournalPhysical Review D
Volume52
Issue number5
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Longley, N. P., Bode, C. R., Border, P. M., Courant, H., Demuth, D. M., Gray, R. N., Johns, K., Kasahara, S. M. S., Lowe, M. J., Marshak, M. L., Miller, W. H., Mualem, L., Peterson, E. A., Roback, D. M., Ruddick, K., Schmid, D. J., Schub, M. H., Shupe, M. A., Vassiliev, V., ... Barrett, W. L. (1995). Ultrahigh energy cosmic ray composition from surface air shower and underground muon measurements at Soudan 2. Physical Review D, 52(5), 2760-2765. https://doi.org/10.1103/PhysRevD.52.2760