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Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions 

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Correlations 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.

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Journal of High Energy Physics, 2023, vol. 2023, num.172, p. 1-29

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions 