A study of photon production in hadronic e+e- annihilation

W. Bartel*, L. Becker, D. Cords, R. Felst, D. Haidt, H. Junge, G. Knies, H. Krehbiel, P. Laurikainen, R. Meinke, B. Naroska, J. Olsson, D. Schmidt, P. Steffen, G. Dietrich, J. Hagemann, G. Heinzelmann, H. Kado, K. Kawagoe, C. KleinwortM. Kuhlen, K. Meier, A. Petersen, R. Ramcke, U. Schneekloth, G. Weber, K. Ambrus, S. Bethke, A. Dieckmann, E. Elsen, J. Heintze, K. H. Hellenbrand, S. Komamiya, J. von Krogh, P. Lennert, H. Matsumura, H. Rieseberg, J. Spitzer, A. Wagner, C. Bowdery, A. Finch, F. Foster, G. Hughes, T. Nozaki, J. Nye, J. Allison, A. H. Ball, R. J. Barlow, J. Chrin, I. P. Duerdoth, T. Greenshaw, P. Hill, F. K. Loebinger, A. A. Macbeth, H. E. Mills, P. G. Murphy, K. Stephens, P. Warming, R. G. Glasser, B. Sechi-Zorn, J. A.J. Skard, S. R. Wagner, G. T. Zorn, S. L. Cartwright, D. Clarke, R. Marshall, R. P. Middleton, J. B. Whittaker, T. Kawamoto, T. Kobayashi, T. Mashimo, M. Minowa, H. Takeda, T. Takeshita, S. Yamada

*この研究の対応する著者

研究成果: Article査読

35 被引用数 (Scopus)

抄録

The production of photons in e+e-→γ+hadrons is investigated at three centre of mass energies around 14, 22 and 34 GeV. On average, photons carry 25% of the total available energy, with a multiplicity similar to the charged multiplicity. The inclusive photon spectra are found to scale with the centre of mass energy as a function of the Feynman variable x. π0 and η mesons are reconstructed from their decay photons. The slopes of the spectra are similar to that for charged pions and approximate scaling is observed for π0 production. The mean π0 and η multiplicities are given. The observed photon yield can be fully accounted for by hadron decays and initial state radiation. However, up to one extra photon per event from other sources cannot be excluded.

本文言語English
ページ(範囲)343-356
ページ数14
ジャーナルZeitschrift für Physik C Particles and Fields
28
3
DOI
出版ステータスPublished - 1985 9
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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