UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Test of the flavour independence of alpha(s) using next-to-leading order calculations for heavy quarks

Abbiendi, G; Ackerstaff, K; Alexander, G; Allison, J; Altekamp, N; Anderson, KJ; Anderson, S; ... OPAL Collaboration, ; + view all (1999) Test of the flavour independence of alpha(s) using next-to-leading order calculations for heavy quarks. EUR PHYS J C , 11 (4) 643 - 659.

Full text not available from this repository.

Abstract

We present a test of the flavour independence of the strong coupling constant for charm and bottom quarks with respect to light (uds) quarks, based on a hadronic event sample obtained with the OPAL detector at LEP. Five observables related to global event shapes were used to measure ct, in three flavour tagged samples (uds, c and b). The event shape distributions were fitted by O(alpha(s)(2)) calculations of jet production taking into account mass effects for the c and b quarks. We find:alpha(s)(c)/alpha(s)(uds) = 0.997 +/- 0.038 (stat.) +/- 0.030 (syst.) +/- 0.012 (theory) and alpha(s)(b)/alpha(s)(uds) = 0.993 +/- 0.008 (stat.) +/- 0.006 (syst.) +/- 0.011 (theory).

Type: Article
Title: Test of the flavour independence of alpha(s) using next-to-leading order calculations for heavy quarks
Keywords: Z(0) RESONANCE, D-ASTERISK(+/-) MESONS, MICROVERTEX DETECTOR, E+E-ANNIHILATION, QCD, LEP, LEPTONS, EVENTS, MULTIPLICITY, SIMULATION
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1303394
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item