Pion-pair production from γγ interactions at PEP and the radiative width of the fo meson

A. Courau, R. P. Johnson, S. S. Sherman, W. B. Atwood, P. H. Baillon, B. C. Barish, G. R. Bonneaud, G. J. Donaldson, R. Dubois, M. M. Duro, E. E. Elsen, S. G. Gao, Y. Z. Huang, G. M. Irwin, H. Kichimi, J. Kirkby, D. E. Klem, D. E. Koop, J. Ludwig, G. B. MillsA. Ogawa, T. Pal, D. Perret-Gallix, R. Pitthan, D. L. Pollard, C. Y. Prescott, L. Z. Rivkin, L. S. Rochester, W. Ruckstuhl, M. Sakuda, E. J. Siskind, R. Stroynowski, S. Q. Wang, S. G. Wojcicki, H. Yamamoto, W. G. Yan, C. C. Young

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Results are presented of an untagged e+e- → e+e- + π+π- experiment performed at PEP with the DELCO detector. In the invariant-mass range 0.7 ≤ Wππ < 2.0 GeV/c2, the QED e+e- background is identified and eliminated, and both the π+π- predictions and the μ+μ- and K+K- background substractions are normalized to the measurement of the e e+e- events. The results agree with a simple model of superposition and interference of the f0 (1270) resonance, produced with helicity 2, with a Born-term continuum. From a fit of the model to the data, the radiative width of the f0 is determined to be Γf 0→γγ = 2.70 ± 0.21 keV.

Original languageEnglish
Pages (from-to)227-231
Number of pages5
JournalPhysics Letters B
Volume147
Issue number1-3
DOIs
Publication statusPublished - Nov 1 1984

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Pion-pair production from γγ interactions at PEP and the radiative width of the f<sup>o</sup> meson'. Together they form a unique fingerprint.

Cite this