Gamma and pizero production in e/sup +/e/sup -/ annihilation. [4. 9 to 7. 4 GeV (c. m. )]

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Inclusive cross sections of ..gamma..'s and ..pi../sup 0/ mesons in hadronic events produced by electron-positron annihilation for the center-of-mass energy range 4.9 to 7.4 GeV are presented. Scale invariance of the inclusive spectra is exhibited in this energy range, and their normalization and shape are seen to be consistent with those of spectra arising from the decay of the ..pi../sup 0/. The fraction of center-of-mass energy carried away by the ..gamma..'s at high energies is found to be < E/sub ..gamma..//E/sub c.m./> = 0.24 +- 0.01. The ..pi../sup 0/ inclusive cross section is seen to be consistent in normalization and ... continued below

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Pages: 129

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Fong, A. January 1, 1980.

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  • Lawrence Berkeley Laboratory
    Publisher Info: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
    Place of Publication: Berkeley, California

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Description

Inclusive cross sections of ..gamma..'s and ..pi../sup 0/ mesons in hadronic events produced by electron-positron annihilation for the center-of-mass energy range 4.9 to 7.4 GeV are presented. Scale invariance of the inclusive spectra is exhibited in this energy range, and their normalization and shape are seen to be consistent with those of spectra arising from the decay of the ..pi../sup 0/. The fraction of center-of-mass energy carried away by the ..gamma..'s at high energies is found to be < E/sub ..gamma..//E/sub c.m./> = 0.24 +- 0.01. The ..pi../sup 0/ inclusive cross section is seen to be consistent in normalization and shape with half the charged-..pi.. cross section between x = 0.15 and 0.75, with an integrated inclusive cross-section ratio of sigma(..pi../sup 0/)/(sigma(..pi../sup +/) + sigma(..pi../sup -/)) = 0.48 +- 0.05. 60 figures, 7 tables.

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Pages: 129

Notes

Dep. NTIS, PC A07/MF A01.

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  • Other Information: Thesis

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  • Report No.: LBL-10389
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/5520391 | External Link
  • Office of Scientific & Technical Information Report Number: 5520391
  • Archival Resource Key: ark:/67531/metadc1092309

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  • January 1, 1980

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 24, 2018, 4:39 p.m.

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Fong, A. Gamma and pizero production in e/sup +/e/sup -/ annihilation. [4. 9 to 7. 4 GeV (c. m. )], report, January 1, 1980; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1092309/: accessed October 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.