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Substructure dependence of jet cross sections at HERA and determination of alpha_s

ZEUS Collaboration, The; (2004) Substructure dependence of jet cross sections at HERA and determination of alpha_s. Nuclear Physics B , 700 (1-3) pp. 3-50. 10.1016/j.nuclphysb.2004.08.049. Green open access

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Abstract

The substructure of jets has been studied in terms of the jet shape and subjet multiplicity and these quantities used to tag gluon- and quark-initiated jets. Cross sections are presented for gluon- and quark-tagged jets which exhibit the expected behaviour of the underlying parton dynamics. The value of alpha_s(M_Z) of alpha_s(M_Z) = 0.1176 +- 0.0009 (stat.) ^{+0.0009}_{-0.0026} (exp.) ^{+0.0091}_{-0.0072} (th.) was extracted from the measurements of jet shapes in deep inelastic scattering.

Type: Article
Title: Substructure dependence of jet cross sections at HERA and determination of alpha_s
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.nuclphysb.2004.08.049
Publisher version: http://dx.doi.org/10.1016/j.nuclphysb.2004.08.049
Language: English
Additional information: The ZEUS Collaboration includes the following UCL authors: S. Boutle, J.M. Butterworth, C. Gwenlan, R. Hall-Wilton, T.W. Jones, J.H. Loizides, D. Nicholass, M.R. Sutton, C. Targett-Adams and M. Wing.
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10190
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