A study of high transverse momentum π0's at ISR energies

K. Eggert, K. L. Giboni, W. Thomé, B. Betev, P. Darriulat, P. Dittmann, M. Holder, K. T. McDonald, H. G. Pugh, G. Vesztergombi, T. Modis, K. Tittel, V. Eckardt, H. J. Gebauer, R. Meinke, O. R. Sander, P. Seyboth

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We present a study of the transverse momentum spectrum of π0's produced at c.m. angles θ = 90° and 53° in pp collisions at √s = 23.6, 30.8, 45.1, 53.2, and 62.9 GeV. The experiment was performed with a lead-glass detector. The data can be described with the usual parametrization pT-nf{hook};(xT, θ), with n = 7.2 ± 0.2. Comparison between the 90° and 53° data further indicates no appreciable dependence on θ, at least for xT < 0.3. Two-particle inclusive cross sections for π0's produced alongside are also presented. They are observed to have a dependence upon the transverse momentum of the dipion similar to that of single-particle cross sections and with the same value of n. Two-photon decays of η mesons are observed between 3 and 4 GeV/c transverse momentum with a production cross section half of that of π0.

Original languageEnglish
Pages (from-to)49-72
Number of pages24
JournalNuclear Physics, Section B
Issue number1
Publication statusPublished - Oct 27 1975

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Eggert, K., Giboni, K. L., Thomé, W., Betev, B., Darriulat, P., Dittmann, P., Holder, M., McDonald, K. T., Pugh, H. G., Vesztergombi, G., Modis, T., Tittel, K., Eckardt, V., Gebauer, H. J., Meinke, R., Sander, O. R., & Seyboth, P. (1975). A study of high transverse momentum π0's at ISR energies. Nuclear Physics, Section B, 98(1), 49-72. https://doi.org/10.1016/0550-3213(75)90199-6