Bose-Einstein correlations are studied in semileptonic (WW --> q (q) over bar lv) and fully hadronic (WW --> q (q) over bar q (q) over bar) W-pair decays with the ALEPH detector at LEP at centre-of-mass energies of 172, 183 and 189 GeV. They are compared with those made at the Z peak after correction for the different flavour compositions. A Monte Carlo model of Bose-Einstein correlations based on the JETSET hadronization scheme was tuned to the Z data and reproduces the correlations in the WW --> q (q) over bar lv events. The same Monte Carlo reproduces the correlations in the WW --> q (q) over bar q (q) over bar channel assuming independent fragmentation of the two W's. A variant of this model with Bose-Einstein correlations between decay products of different W's is disfavoured. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

Bose-Einstein correlations in W-pair decays / Berate, R., Decamp, D., Ghez, P., Coy, C., Jezequel, S., Lees, J.p., Martin, F., Merle, E., Minard, M.n., Pietrzyk, B., Alemany, R., Bravo, S., Casado, M.p., Chmeissani, M., Crespo, J.m., Fernandez, E., Fernandez Bosman, M., Garrido, L.l., Grauges, E., Juste, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 478:1-3(2000), pp. 50-64. [10.1016/S0370-2693(00)00234-3]

Bose-Einstein correlations in W-pair decays

CREANZA, Donato Maria;IASELLI, Giuseppe;MAGGI, Giorgio Pietro;
2000

Abstract

Bose-Einstein correlations are studied in semileptonic (WW --> q (q) over bar lv) and fully hadronic (WW --> q (q) over bar q (q) over bar) W-pair decays with the ALEPH detector at LEP at centre-of-mass energies of 172, 183 and 189 GeV. They are compared with those made at the Z peak after correction for the different flavour compositions. A Monte Carlo model of Bose-Einstein correlations based on the JETSET hadronization scheme was tuned to the Z data and reproduces the correlations in the WW --> q (q) over bar lv events. The same Monte Carlo reproduces the correlations in the WW --> q (q) over bar q (q) over bar channel assuming independent fragmentation of the two W's. A variant of this model with Bose-Einstein correlations between decay products of different W's is disfavoured. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
2000
Bose-Einstein correlations in W-pair decays / Berate, R., Decamp, D., Ghez, P., Coy, C., Jezequel, S., Lees, J.p., Martin, F., Merle, E., Minard, M.n., Pietrzyk, B., Alemany, R., Bravo, S., Casado, M.p., Chmeissani, M., Crespo, J.m., Fernandez, E., Fernandez Bosman, M., Garrido, L.l., Grauges, E., Juste, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 478:1-3(2000), pp. 50-64. [10.1016/S0370-2693(00)00234-3]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/2852
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