Studies of QCD in e+e- → hadrons at Ecm = 130 and 136 GeV

D. Buskulic, I. De Bonis, D. Decamp, P. Ghez, C. Goy, J. P. Lees, A. Lucotte, M. N. Minard, P. Odier, B. Pietrzyk, M. P. Casado, M. Chmeissani, J. M. Crespo, M. Delfino, I. Efthymiopoulos, E. Fernandez, M. Fernandez-Bosnian, Ll Garrido, A. Juste, M. MartinezS. Orteu, A. Pacheco, C. Padilla, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, F. Teubert, A. Colaleo, D. Creanza, M. De Palma, G. Gelao, M. Girone, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, R. Alemany, A. O. Bazarko, M. Cattaneo, P. Comas, P. Coyle, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, G. Lutters, E. B. Martin, P. Mato, A. Minten, R. Miquel, Ll M. Mir, L. Moneta, T. Oest, J. F. Pusztaszeri, F. Ranjard, P. Rensing, L. Rolandi, D. Schlatter, M. Schmelling, O. Schneider, W. Tejessy, I. R. Tomalin, A. Venturi, H. Wachsmuth, A. Wagner, Z. Ajaltouni, A. Barrès, C. Boyer, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil

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Abstract

An analysis of the properties of hadronic final states produced in electron-positron annihilation at centre-of-mass energies of 130 and 136GeV is presented. The measurements are based on a data sample of 5.7 pb-1 collected in November 1995 with the ALEPH detector at LEP. Inclusive charged particle distributions, jet rates and event-shape distributions are measured and the results are compared with the predictions of QCD-based models. From the measured distributions quantities are determined for which the dependence on the centre-of-mass energy can be predicted by QCD, including the mean multiplicity of charged particles, the peak position of the inclusive distribution of ξ = -In xp (xp = p/pbeam), and the strong coupling constant αs. The QCD predictions are tested by comparing with corresponding measurements at Ecm = 91.2GeV and at lower energies. © Springer-Verlag 1997.
Original languageEnglish
Pages (from-to)409-420
JournalZeitschrift fur Physik C-Particles and Fields
Volume73
Issue number3
DOIs
Publication statusPublished - 1 Feb 1997

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    Buskulic, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Lucotte, A., Minard, M. N., Odier, P., Pietrzyk, B., Casado, M. P., Chmeissani, M., Crespo, J. M., Delfino, M., Efthymiopoulos, I., Fernandez, E., Fernandez-Bosnian, M., Garrido, L., Juste, A., ... Monteil, S. (1997). Studies of QCD in e+e- → hadrons at Ecm = 130 and 136 GeV. Zeitschrift fur Physik C-Particles and Fields, 73(3), 409-420. https://doi.org/10.1007/s002880050330