An analysis of the properties of hadronic final states produced in electron-positron annihilation at centre-of-mass energies of 130 and 136 GeV 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 xi = - 1nx(p) (x(p) = p/p(beam)), and the strong coupling constant alpha(s). The QCD predictions are tested by comparing with corresponding measurements at E(cm) = 91.2 GeV and at lower energies.

Studies of QCD in e+e- → hadrons at Ecm = 130 and 136 GeV / Buskulic, D., Debonis, 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., Fernandezbosman, M., Garrido, L., Juste, A., Martinez, M., et al.. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 73:3(1997), pp. 409-420. [10.1007/s002880050330]

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

Creanza D;Iaselli G;
1997

Abstract

An analysis of the properties of hadronic final states produced in electron-positron annihilation at centre-of-mass energies of 130 and 136 GeV 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 xi = - 1nx(p) (x(p) = p/p(beam)), and the strong coupling constant alpha(s). The QCD predictions are tested by comparing with corresponding measurements at E(cm) = 91.2 GeV and at lower energies.
1997
Studies of QCD in e+e- → hadrons at Ecm = 130 and 136 GeV / Buskulic, D., Debonis, 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., Fernandezbosman, M., Garrido, L., Juste, A., Martinez, M., et al.. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 73:3(1997), pp. 409-420. [10.1007/s002880050330]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/4921
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