Measurement Of The Strong Coupling Alpha(S) From The Three-Jet Rate In E(+)E(-)-Annihilation Using Jade Data

J Schieck,Siegfried Bethke,S Kluth,C Pahl, Z Trocsany, J Allison,K Ambrus, J C M Armitage,J T Baines,A H Ball,G Bamford,R J Barlow,W Bartel,Lore Becker,A J Bell,C K Bowdery,T Canzler,S Cartwright,J T M Chrin,D J Clarke,D Cords, D C Darvill,A Dieckmann,G Dietrich,P Dittmann,H Drumm,I P Duerdoth, G Eckerlin,R Eichler,E Elsen,R Felst,A J Finch,F Foster,R G Glasser,I Glendinning,M C Goddard, T Greenshaw,J Hagemann,D Haidt,J F Hassard, R Hedgecock,J Heintze, G Heinzelmann,K H Hellenbrand,M Helm,R D Heuer,P Hill, G K Hughes,M Imori,H Junge,H Kado, J Kanzaki,S Kawabata,K Kawagoe, T Kawamoto,B T King, C Kleinwort,G Knies, Takahiro Kobayashi, S Komamiya,Masanori Koshiba,H Krehbiel,M Kuhlen,P Laurikainen,P Lennert, K Loebinger,A A Macbeth,N Magnussen, R Marshall,Tomoji Mashimo,Hideo Matsumura,H Mccann,Karlheinz Meier,R Meinke, Roy Middleton,H E Mills,M Minowa, P Murphy,B Naroska,Takayuki Nozaki,M Nozaki

EUROPEAN PHYSICAL JOURNAL C（2013）

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摘要

We present a measurement of the strong coupling alpha(S) using the three-jet rate measured with the Durham algorithm in e(+)e(-)-annihilation using data of the JADE experiment at centre-of-mass energies between 14 and 44 GeV. Recent theoretical improvements provide predictions of the three-jet rate in e(+)e(-)-annihilation at next-to-next-to-leading order. In this paper a measurement of the three-jet rate is used to determine the strong coupling aS from a comparison to next-to-next-to-leading order predictions matched with next-to-leading logarithmic approximations and yields a value for the strong couplingalpha(S)(M-Z0) = 0.1199 +/- 0.0010(stat) +/- 0.0021(exp) +/- 0.0054(had) +/- 0.0007(theo),consistent with the world average.

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