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We have carried out an inclusive measurement of K 0 (K 0 ) production in two-photon processes at TRISTAN. The mean s was 58 GeV and the integrated luminosity was 199 pb -1 . High-statistics K s samples were obtained under such conditions as no-, anti-electron, and remnant-jet tags. The remnant-jet tag, in particular, allowed us, for the first time, to measure...
We have studied open charm production in γγ collisions with the TOPAZ detector at the TRISTAN e + e - collider. In this study, charm quarks were identified by electrons (and positrons) from semi-leptonic decays of charmed hadrons. The data corresponded to an integrated luminosity of 95.3 pb -1 at a center-of-mass energy of 58 GeV. The results are presented as the cross...
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