Measurement of charm production in two photon processes using inclusive lepton events at TRISTAN

Measurements of open charm production in photon-photon collisions made with the AMY detector at TRISTAN are reported. Charmed hadrons were identified by detecting the high momentum muons or electrons from their semileptonic decays. The data sample corresponds to an integrated luminosity of 275 pb −1 at an average center of mass energy of 58 GeV. Results are presented in the form of cross sections of inclusive leptons from charm for both muons and electrons. The measured cross section is 1.8 standard deviations higher than theoretical predictions based on the direct and photon-gluon fusion process, where the mass of charm quark is assumed to be 1.6 GeV.

electron positron: colliding beams
colliding beams: electron positron
electron positron: inelastic scattering
inelastic scattering: electron positron
exchange: two-photon
two-photon: exchange
photon photon: inclusive reaction
charmed meson: photoproduction
photoproduction: charmed meson
charmed meson: semileptonic decay

References(29)

Figures(0)

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