Measurement of D*± production in two-photon processes at TRISTAN

N. Takashimizu, T. Sasaki, H. Miyata, T. Aso, K. Miyano, N. Nakajima, K. Ohkubo, M. Sato, M. Shirai, Y. Yamashita, K. Abe, Y. Fujii, S. Igarashi, Y. Kurihara, M. H. Lee, F. Liu, A. Maki, T. Nozaki, T. Omori, H. SagawaY. Sakai, Y. Sugimoto, Y. Takaiwa, S. Terada, P. Kirk, T. J. Wang, A. Abashian, K. Gotow, L. Piilonen, S. K. Choi, C. Rosenfeld, L. Y. Zheng, R. E. Breedon, Winston Ko, R. L. Lander, J. Rowe, S. Kanda, S. L. Olsen, K. Ueno, F. Kajino, S. Schnetzer, S. Behari, S. Kobayashi, A. Murakami, S. K. Sahu, J. S. Kang, D. Y. Kim, S. S. Myung, H. S. Ahn, S. K. Kim, S. Matsumoto

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Abstract

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 languageEnglish (US)
Pages (from-to)372-378
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume381
Issue number1-3
DOIs
StatePublished - Jul 18 1996

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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