Global transverse energy distributions in relativistic nuclear collisions at 14.6A GeV/c

T. Abbott, Y. Akiba, D. Alburger, D. Beavis, L. Birstein, M. A. Bloomer, P. D. Bond, C. Chasman, Z. Chen, Y. Y. Chu, B. A. Cole, J. B. Costales, H. J. Crawford, J. B. Cumming, R. Debbe, E. Duek, J. Engelage, S. Y. Fung, L. Grodzins, S. GushueH. Hamagaki, O. Hansen, R. S. Hayano, S. Hayashi, S. Homma, H. Z. Huang, Y. Ikeda, I. Juricic, J. Kang, S. Katcoff, S. Kaufman, K. Kimura, K. Kitamura, K. Kurita, R. J. Ledoux, M. J. LeVine, Y. Miake, R. J. Morse, B. Moskowitz, S. Nagamiya, J. Olness, C. G. Parsons, L. P. Remsberg, H. Sakurai, M. Sarabura, A. Shor, P. Stankus, S. G. Steadman, G. S.F. Stephans, T. Sugitate, M. Tanaka, M. J. Tannenbaum, M. Torikoshi, J. H. Van Dijk, F. Videbaek, M. Vient, P. Vincent, E. Vulgaris, V. Vutsadakis, W. A. Watson, H. E. Wegner, D. S. Woodruff, Y. D. Wu, W. Zajc

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Abstract

A systematic set of measurements of the global transverse energy distributions, d/dET and dET/d, from beams of protons, O16 and Si28 at 14.6A GeV/c, incident on targets ranging from Be to Au is presented. The detector was a semicircular array of lead-glass blocks, covering polar angles 9°<<32°, whose total response provides a good measure of the produced particle yield in the central rapidity region of these reactions. Proton-nucleus spectra exhibit a similar shape on the high-energy tail, independent of target, suggesting that produced particles in such events arise mostly from the first collision of the projectile proton. For targets heavier than Cu, the high-energy edges of the oxygen-nucleus spectra, and of the silicon-nucleus spectra, reach ratios consistent with the geometry of central collisions. Angular distributions, dET/d, are characterized by Gaussian fits, and an acceptance-independent form of the differential cross section is found, based on the maximum value of dET/d. The projectile dependence of nucleus-nucleus spectra is studied in terms of two very different models: simple energy scaling and the wounded projectile nucleon model of p+A convolutions.

Original languageEnglish
Pages (from-to)2933-2951
Number of pages19
JournalPhysical Review C
Volume45
Issue number6
DOIs
Publication statusPublished - 1992

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Abbott, T., Akiba, Y., Alburger, D., Beavis, D., Birstein, L., Bloomer, M. A., Bond, P. D., Chasman, C., Chen, Z., Chu, Y. Y., Cole, B. A., Costales, J. B., Crawford, H. J., Cumming, J. B., Debbe, R., Duek, E., Engelage, J., Fung, S. Y., Grodzins, L., ... Zajc, W. (1992). Global transverse energy distributions in relativistic nuclear collisions at 14.6A GeV/c. Physical Review C, 45(6), 2933-2951. https://doi.org/10.1103/PhysRevC.45.2933