7 v 1 2 7 A ug 2 00 3 KK photoproduction and S − P wave interference
نویسندگان
چکیده
Results of a new analysis of the K+K− photoproduction at two photon energies Eγ = 4 GeV and 5.65 GeV with a particular emphasis on the S-wave production are presented. We show that the proper treatment of all the helicity components of the Sand P -waves enables one to eliminate the reported discrepancies in extraction of the S-wave photoproduction cross section from experimental data.
منابع مشابه
x / 02 08 02 7 v 1 1 7 A ug 2 00 2 Observation of a 1750 MeV / c 2 Enhancement in the Diffractive Photoproduction of K + K −
Using the FOCUS spectrometer with photon beam energies between 20 and 160 GeV, we confirm the existence of a diffractively photoproduced enhancement in KK at 1750 MeV/c with nearly 100 times the statistics of previous experiments. Assuming this enhancement to be a single resonance with a Breit-Wigner mass shape, we determine its mass to be 1753.5± 1.5± 2.3 MeV/c and its width to be 122.2± 6.2±8...
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Results of a new analysis of the K+K− photoproduction at two photon energies Eγ = 4 GeV and 5.65 GeV with a particular emphasis on the S-wave production are presented. We show that the proper treatment of all the helicity components of the Sand P -waves enables one to eliminate the reported discrepancies in the extraction of the Swave photoproduction cross section from experimental data.
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