Elsevier

Physics Letters B

Volume 215, Issue 1, 8 December 1988, Pages 175-185
Physics Letters B

Measurement of the strong coupling constant αs from a study of W Bosons produced in association with jets

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Abstract

The UA2 experiment at the CERN pp Collider has identified a total sample of 251 W→eν events. Among this sample 221 events are found without jets and 29 with one jet. The yield of one-jet events relative to that of zero-jet events provides a measurement of the strong coupling constant: αs(Mw2)=0.13±0.03(stat)±0.03±(syst1)±0.02(syst2), where syst1 represents the experimental systematic error and syst2 is an estimate of the theoretical uncertainty.

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  • Cited by (18)

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    1

    On leave from Scuola Normale Superiore, I-56100 Pisa, Italy and INFN, I-06100 Perugia, Italy.

    2

    Present address: Fermilab, Batavia, IL 60510, USA.

    3

    Present address: Istituto di Fisica dell' Università di Palermo, I-90133 Palermo, Italy.

    4

    Present address: Hasler Ltd., 3000 Bern, Switzerland.

    5

    Also at Dipartimento di Fisica dell' Università di Perugia, I-06100 Perugia, Italy.

    6

    Present address: Dipartimento di Scienze Fisiche, Università di Cagliari, I-09100 Cagliari, Italy.

    7

    On leave from INFN, I-27100 Pavia, Italy.

    8

    Present address: Università di Bologna, I-40126 Bologna, Italy.

    9

    Also at Università di Milano, I-20133 Milan, Italy.

    10

    Present address: Physics Department, Suny at Stony Brook, Stony Brook, NY 11794, USA.

    11

    Present address: SLAC, Stanford, CA 94305, USA.

    12

    School of Physics, University of Melbourne, Parkville, Victoria 3052, Australia.

    13

    Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.

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