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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/221300
Nuclear Modification Factor of Neutral Pions in the Forward and Backward Regions in p-Pb Collisions
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The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of 8.16 TeV with the LHCb detector. The π0 production cross section is measured differentially in transverse momentum (pT) for 1.5 < pT < 10.0 GeV and in center-of-mass pseudorapidity (ηc:m:) regions 2.5 < ηc:m: < 3.5 (forward) and −4.0 < ηc:m: < −3.0 (backward) defined relative to the proton beam direction. The forward measurement shows a sizable suppression of π0 production, while the backward measurement shows the first evidence of π0 enhancement in proton-lead collisions at the LHC. Together, these measurements provide precise constraints on models of nuclear structure and particle production in high-energy nuclear collisions.
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ALFONSO ALBERO, Alejandro, GARCIA MORENO, Paula, GARRIDO BELTRÁN, Lluís, GIRONELLA GIRONELL, Pere, GOMEZ FERNANDEZ, Sergio, GRAUGÉS POUS, Eugeni, LOBO SALVIA, Aniol, MARIN BENITO, Carla, MAURICIO FERRE, Joan, VAZQUEZ GOMEZ, Ricardo, LHCb Collaboration. Nuclear Modification Factor of Neutral Pions in the Forward and Backward Regions in p-Pb Collisions. _Physical Review Letters_. 2023. Vol. 131, núm. 4. [consulta: 25 de febrer de 2026]. ISSN: 0031-9007. [Disponible a: https://hdl.handle.net/2445/221300]