Abstract
The processγγπ+π− has been measured with complete particle identification. Cross-sections are presented from near threshold up to the region of thef(1270). In the mass range 0.5–0.7 GeV, crosssections are lower than the Born term predictions and show no evidence for an ε(600). The two-photon width of thef(1270) is found to be in agreement with previous results.
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Deceased
Supported by the BMFT, Federal Republic of Germany
Partially supported by Norwegian Council for Science and Humanities
Rome University, partially supported by I.N.F.N., Sezione di Roma, Italy
Supported by the U.K. Science and Engineering Research Council
Partially supported by the Department of Energy, USA
Partially supported by the Israeli Academy of Sciences and Humanities—Basic Research Foundation
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PLUTO Collaboration., Berger, C., Deuter, A. et al. Pion pair production in photon-photon interactions. Z. Phys. C - Particles and Fields 26, 199–207 (1984). https://doi.org/10.1007/BF01421755
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DOI: https://doi.org/10.1007/BF01421755