We present evidence for soft gluon interference, as required by QCD. This interference is expected to manifest itself in an angular ordering of the gluons radiated within a jet. Using hadronic decays of the Z boson in the L3 detector at LEP, we compare variables sensitive to such an angular ordering, namely the energy-energy correlation asymmetry and the newly introduced particle-particle correlation asymmetry, with the predictions of various parton shower models. Only those models which incorporate the expected interference agree with the data.

Evidence for gluon interference in hadronic Z decays

MONACO, Vincenzo;
1995-01-01

Abstract

We present evidence for soft gluon interference, as required by QCD. This interference is expected to manifest itself in an angular ordering of the gluons radiated within a jet. Using hadronic decays of the Z boson in the L3 detector at LEP, we compare variables sensitive to such an angular ordering, namely the energy-energy correlation asymmetry and the newly introduced particle-particle correlation asymmetry, with the predictions of various parton shower models. Only those models which incorporate the expected interference agree with the data.
1995
353
145
154
http://www.sciencedirect.com/science/article/pii/037026939500552V#
QCD; correlazioni tra particelle
M. Acciarri;A. Adam;O. Adriani;M. Aguilar-Benitez;S. Ahlen;B. Alpat;J. Alcaraz;J. Allaby;A. Aloisio;G. Alverson;M.G. Alviggi;G. Ambrosi;Q....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/124969
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