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The measurement of alpha_s from event shapes with the DELPHI detector at the highest LEP energies | | The DELPHI Collaboration
; J. Abdallah
; et al
; | | Date: |
2 Jun 2004 | | Journal: | Eur.Phys.J. C37 (2004) 1-23 | | Subject: | hep-ex | | Abstract: | Hadronic event shape distributions are determined from data in e+e- collisions between 183 and 207 GeV. From these the strong coupling alpha_s is extracted in O(alpha_s^2), NLLA and matched O(alpha_s^2)+NLLA theory. Hadronisation corrections evaluated with fragmentation model generators as well as an analytical power ansatz are applied. Comparing these measurements to those obtained at and around M_Z allows a combined measurement of alpha_s from all DELPHI data and a test of the energy dependence of the strong coupling. | | Source: | arXiv, hep-ex/0406011 | | Services: | Forum | Review | PDF | Favorites | |
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