The inclusive cross section for the production of charmed D*± mesons in two-photon processes is measured with the AMY detector at the TRISTAN e+e- collider. D*±mesons are identified from the distribution of charged-particle transverse momenta relative to the jet axis. A data sample corresponding to an integrated luminosity of 176 pb-1 at a center-of-mass energy of 58 GeV is used to determine a cross section σ(e+e- → e+e-D*±X) = 270 ± 49(stat) ± 38(syst) pb. The results are compared with theoretical expectations based on the Vector Meson Dominance, direct quark-parton model, and resolved photon processes.
|Original language||English (US)|
|Number of pages||6|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Sep 19 1996|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics