Alfonso Albero, AlejandroGarcia Moreno, PaulaGarrido Beltrán, LluísGironella Gironell, PereGomez Fernandez, SergioGraugés Pous, EugeniLobo Salvia, AniolLópez Huertas, AlbertManera Escalero, RafelMarin Benito, CarlaMauricio Ferre, JoanVazquez Gomez, RicardoLHCb Collaboration2025-06-062025-06-0620231126-6708https://hdl.handle.net/2445/221427Correlations of same-sign charged pions are analysed using proton-lead collision data collected by the LHCb experiment at a nucleon-nucleon centre-of-mass energy of 5.02 TeV, corresponding to an integrated luminosity of 1.06 nb−1 . Bose-Einstein correlations are observed in the form of an enhancement of pair production for same-sign charged pions with a small four-momentum diference. The dependence of the correlation radius and the intercept parameter on the reconstructed charged-particle multiplicity is investigated. The measured correlation radii scale linearly with the cube root of the reconstructed charged-particle multiplicity, being compatible with predictions of hydrodynamic models on the collision system evolution.29 p.application/pdfengcc-by (c) Alfonso Albero, A. et al., 2023http://creativecommons.org/licenses/by/4.0/Física de partículesCol·lisions (Física nuclear)HadronsParticle physicsCollisions (Nuclear physics)Hadronsinfo:eu-repo/semantics/article7570792025-06-06info:eu-repo/semantics/openAccess