We have measured the probability, (n) over bar(g --> c (c) over tilde), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods have been applied to events with a three-jet topology. One method relies an tagging charmed hadrons by identifying a lepton in the lowest energy jet. The other method uses a neural network based on global event shape parameters. Combining both methods, we measure (n) over bar(g --> c (c) over bar) = [2.45 +/- 0.29 + 0.53]%. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays / Acciarri, M., Achard, P., Adriani, O., AGUILAR BENITEZ, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M.g., Ambrosi, G., Anderhub, H., Andreev, V.p., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., Balandras, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 476:(2000), pp. 243-255. [10.1016/S0370-2693(00)00163-5]

Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays

BAGNAIA, Paolo;BARONE, Luciano Maria;FACCINI R;FERRONI, Fernando;GENTILE, Simonetta;GIAGU, Stefano;LUCI, Claudio;ORGANTINI, Giovanni;PARAMATTI, Riccardo;
2000

Abstract

We have measured the probability, (n) over bar(g --> c (c) over tilde), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods have been applied to events with a three-jet topology. One method relies an tagging charmed hadrons by identifying a lepton in the lowest energy jet. The other method uses a neural network based on global event shape parameters. Combining both methods, we measure (n) over bar(g --> c (c) over bar) = [2.45 +/- 0.29 + 0.53]%. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
2000
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays / Acciarri, M., Achard, P., Adriani, O., AGUILAR BENITEZ, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M.g., Ambrosi, G., Anderhub, H., Andreev, V.p., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., Balandras, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 476:(2000), pp. 243-255. [10.1016/S0370-2693(00)00163-5]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/248174
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