Inclusive γ and π0 production cross sections and energy fractions ine+e− annihilation at 29 GeV

Autor: Aihara, H., Alston-Garnjost, M., Bakken, J. A., Barbaro-Galtieri, A., Barnes, A. V., Barnett, B. A., Bengtsson, H. -U., Blumenfeld, B. J., Bross, A. D., Buchanan, C. D., Chamberlain, O., Chiba, J., Chien, C-Y., Clark, A. R., Cordier, A., Dahl, O. I., Day, C. T., Derby, K. A., Eberhard, P. H., Fancher, D. L., Fujii, H., Fujii, T., Gabioud, B., Gary, J. W., Gorn, W., Hadley, N. J., Hauptman, J. M., Hofmann, W., Huth, J. E., Hylen, J., Iwasaki, H., Kamae, T., Kaye, H. S., Kenney, R. W., Kerth, L. T., Koda, R. I., Kofler, R. R., Kwong, K. K., Layter, J. G., Lindsey, C. S., Loken, S. C., Lu, X-Q., Lynch, G. R., Madansky, L., Madaras, R. J., Maruyama, K., Marx, J. N., Matthews, J. A. J., Melnikoff, S. O., Moses, W., Nemethy, P., Nygren, D. R., Oddone, P. J., Park, D. A., Pevsner, A., Pripstein, M., Robrish, P. R., Ronan, M. T., Ross, R. R., Rouse, F. R., Sauerwein, R. R., Shapiro, G., Shapiro, M. D., Shen, B. C., Slater, W. E., Stevenson, M. L., Stork, D. H., Ticho, H. K., Toge, N., van Daalen Wetters, R. F., van Dalen, G. J., van Tyen, R., Videau, H., Wang, E. M., Wayne, M. R., Wenzel, W. A., Yamamoto, H., Yamauchi, M., Zhang, W-M.
Zdroj: Zeitschrift für Physik C Particles and Fields; June 1985, Vol. 27 Issue: 2 p187-190, 4p
Abstrakt: Inclusive production cross sections for photons and p0's ine+e- annihilation at a center of mass energy of 29 GeV have been measured. The p0 production spectrum agrees with a corresponding measurement for p±. The ratio of the p0 inclusive rate to the average for p± is 0.92±0.14. The fractions of the total energy carried by photons and p0's are 0.244±0.016 and 0.217±0.033, respectively. The fraction of total energy carried by all stable hadrons, prompt leptons and photons is determined to be 0.938±0.045, leaving 0.062±0.045 for neutrinos.
Databáze: Supplemental Index
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