Event shape and determination of αs at LEP

Banerjee, Sunanda (2004) Event shape and determination of αs at LEP The European Physical Journal C - Particles and Fields, 33 (1). pp. 410-412. ISSN 1434-6044

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Official URL: http://www.springerlink.com/content/1jjabem8r112mk...

Related URL: http://dx.doi.org/10.1140/epjcd/s2004-03-1653-0


The 4 LEP experiments have reanalysed their data on event shape variables for e+e- → hadrons to determine the strong coupling constant αs. A consistent treatment of these measurements and a better understanding of the theoretical uncertainties by the LEP QCD working group yields the result α s (MZ) = 0.1202 ± 0.0003 (stat) ± 0.0009 (exp) ± 0.0009 (hadr) ± 0.0047 (theo).

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