Two-particle Bose–Einstein momentum correlation functions are studied for charged-hadron pairs in lead-lead collisions at a center-of-mass energy per nucleon pair of √ sNN = 5.02 TeV. The data sample, containing 4.27 × 109 minimum bias events corresponding to an integrated luminosity of 0.607nb−1, was collected by the CMSexperimentin2018.Theexperimental results are discussed in terms of a Lévy-type source distribution. The parameters of this distribution are extracted as functions of particle pair average transverse mass and collision centrality. These parameters include the Lévy index or shape parameter α, the Lévy scale parameter R, and the correlation strength parameter λ. The source shape, characterized by α, is found to be neither Cauchy nor Gaussian, implying the need for a full Lévy analysis. Similarly to what was previously found for systems characterized by Gaussian source radii, a hydrodynamical scaling is observed for the Lévy R parameter. The λ parameter is studied in terms of the core-halo model.

Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Damanakis, K., et al. (2024). Two-particle Bose-Einstein correlations and their Lévy parameters in PbPb collisions at √sNN = 5.02 TeV. PHYSICAL REVIEW C, 109(2), 1-24 [10.1103/physrevc.109.024914].

Two-particle Bose-Einstein correlations and their Lévy parameters in PbPb collisions at √sNN = 5.02 TeV

Battilana, C.;Bonacorsi, D.;Borgonovi, L.;Brigliadori, L.;Capiluppi, P.;Castro, A.;Cuffiani, M.;Diotalevi, T.;Fanfani, A.;Giommi, L.;Guiducci, L.;Navarria, F. L.;Primavera, F.;Rossi, A. M.;Rovelli, T.;Siroli, G. P.;
2024

Abstract

Two-particle Bose–Einstein momentum correlation functions are studied for charged-hadron pairs in lead-lead collisions at a center-of-mass energy per nucleon pair of √ sNN = 5.02 TeV. The data sample, containing 4.27 × 109 minimum bias events corresponding to an integrated luminosity of 0.607nb−1, was collected by the CMSexperimentin2018.Theexperimental results are discussed in terms of a Lévy-type source distribution. The parameters of this distribution are extracted as functions of particle pair average transverse mass and collision centrality. These parameters include the Lévy index or shape parameter α, the Lévy scale parameter R, and the correlation strength parameter λ. The source shape, characterized by α, is found to be neither Cauchy nor Gaussian, implying the need for a full Lévy analysis. Similarly to what was previously found for systems characterized by Gaussian source radii, a hydrodynamical scaling is observed for the Lévy R parameter. The λ parameter is studied in terms of the core-halo model.
2024
Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Damanakis, K., et al. (2024). Two-particle Bose-Einstein correlations and their Lévy parameters in PbPb collisions at √sNN = 5.02 TeV. PHYSICAL REVIEW C, 109(2), 1-24 [10.1103/physrevc.109.024914].
Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hussain, P. S.; Jeit...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1003362
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