Test of the τ-model of Bose–Einstein correlations and reconstruction of the source function in hadronic Z-boson decay at LEP

Autor: L3 Collaboration, Achard, Pablo, Anderhub, Hans-Bruno, Barczyk, Artur, Behner, Frank, Betev, Botio L., Biland, Adrian, Bourilkov, Dimitri, De Salvo, Alessandro, Dittmar, Michael, Felcini, Marta, Freudenreich, Klaus, Grimm, Oliver, Hofer, Hans, Holzner, Gregor, Kräber, Michael, Lecomte, Pierre, Le Coultre, Pierre, Lustermann, Werner, Nessi-Tedaldi, Francesca, Ofierzynski, Radoslaw, Pauss, Felicitas, Rahal-Callot, Ghita, Ramelli, Renzo, Ren, Daning, Rykaczewski, Hans, Sakharov, Alexander S., Suter, Henry, Ulbricht, Jürgen, Viertel, Gert, Zimmermann, Bruno
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: The European Physical Journal C, 71 (5)
ISSN: 1434-6044
1434-6052
DOI: 10.3929/ethz-b-000037604
Popis: Bose–Einstein correlations of pairs of identical charged pions produced in hadronic Z decays are analyzed in terms of various parametrizations. A good description is achieved using a Lévy stable distribution in conjunction with a model where a particle’s momentum is correlated with its space–time point of production, the τ-model. Using this description and the measured rapidity and transverse momentum distributions, the space–time evolution of particle emission in two-jet events is reconstructed. However, the elongation of the particle emission region previously observed is not accommodated in the τ-model, and this is investigated using an ad hoc modification.
The European Physical Journal C, 71 (5)
ISSN:1434-6044
ISSN:1434-6052
Databáze: OpenAIRE
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