A study on the Bose-Einstein correlations for triplets of same-sign pions is presented. The analysis is performed using proton-proton collisions at a centre-of-mass energy of s = 7 TeV, recorded by the LHCb experiment, corresponding to an integrated luminosity of 1.0 fb−1. For the first time, the results are interpreted in the core-halo model. The parameters of the model are determined in regions of charged-particle multiplicity. This measurement provides insight into the nature of hadronisation in terms of coherence, being consistent with the presence of coherent emission of pions.
Three-pion Bose-Einstein correlations measured in proton-proton collisions
Argenton M.;Balboni A.;Bolzonella R.;Calabrese R.;Capriotti L.;Cavallini V.;Couturier B.;Fiorini M.;Franzoso E.;Guarise M.;Kotriakhova S.;Luppi E.;Okamura S.;Pappalardo L. L.;Passalacqua B.;Romolini G.;Tomassetti L.;
2025
Abstract
A study on the Bose-Einstein correlations for triplets of same-sign pions is presented. The analysis is performed using proton-proton collisions at a centre-of-mass energy of s = 7 TeV, recorded by the LHCb experiment, corresponding to an integrated luminosity of 1.0 fb−1. For the first time, the results are interpreted in the core-halo model. The parameters of the model are determined in regions of charged-particle multiplicity. This measurement provides insight into the nature of hadronisation in terms of coherence, being consistent with the presence of coherent emission of pions.File in questo prodotto:
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