Energy-energy correlations in hadronic final states from Z0 decays
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Energy-energy correlations in hadronic final states from Z0 decays

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Energy-energy correlations in hadronic final states from Z0 decays

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DELPHI Collaboration; Allen, Paul; Alted Abad, Francesc Josep; Benlloch Baviera, José María; Castillo Giménez, María Victoria Perfil; Contreras González, José Luis; Ferrer Soria, Antonio Perfil; Fuster Verdú, Juan A. Perfil; Fez Laso, M. D. M. de; Hernández Rey, Juan José Perfil; Higón Rodríguez, Emilio Perfil; Lozano Bahilo, José Julio; Llosá Reig, Rafael; Sanchis Peris, Enrique; Sebastiá Cortés, Angel; Sánchez Rojo, María Ester; Sánchez Martínez, Javier; Valls Ferrer, Juan Antonio; Velasco González, Jorge; Zúñiga Román, Juan
This document is a artículoDate1990
We have studied the energy-energy angular correlations in hadronic final states from Z 0 decay using the DELPHI detector at LEP. From a comparison with Monte Carlo calculations based on the exact second order QCD matrix element and string fragmentation we find that Λ (5) MS =104 +25 -20 ( stat. ) +25 -20( syst. ) +30 00 ) theor. ) . MeV, which corresponds to α s (91 GeV)=0.106±0.003(stat.)±0.003(syst.) +0.003 -0.000 (theor). The theoretical error stems from different choices for the renormalization scale of α s . In the Monte Carlo simulation the scale of α s as well as the fragmentation parameters have been optimized to described reasonably well all aspects of multihadron production.

    DELPHI Collaboration Allen, Paul Alted Abad, Francesc Josep Benlloch Baviera, José María Castillo Giménez, María Victoria Contreras González, José Luis Ferrer Soria, Antonio Fuster Verdú, Juan A. Fez Laso, M. D. M. de Hernández Rey, Juan José Higón Rodríguez, Emilio Lozano Bahilo, José Julio Llosá Reig, Rafael Sanchis Peris, Enrique Sebastiá Cortés, Angel Sánchez Rojo, María Ester Sánchez Martínez, Javier Valls Ferrer, Juan Antonio Velasco González, Jorge Zúñiga Román, Juan 1990 Energy-energy correlations in hadronic final states from Z0 decays Physics Letters B 252 1 149 158
http://dx.doi.org/10.1016/0370-2693(90)91097-U
distribuido bajo licencia Creative Commons de Reconocimiento-NoComercial 3.0 No adaptada

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