@article{e4cb931ef84a410e912315be1d76c808,
title = "Nuclear Modification Factor of Neutral Pions in the Forward and Backward Regions in p−Pb Collisions",
abstract = "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.",
author = "R Aaij and Abdelmotteleb, {A S W} and {Abellan Beteta}, C and F Abudin{\'e}n and T Ackernley and B Adeva and M Adinolfi and H Afsharnia and C Agapopoulou and Aidala, {C A} and S Aiola and Z Ajaltouni and S Akar and K Akiba and J Albrecht and F Alessio and M Alexander and {Alfonso Albero}, A and Z Aliouche and {Alvarez Cartelle}, P and S Amato and Amey, {J L} and Y Amhis and L An and L Anderlini and M Andersson and A Andreianov and M Andreotti and D Ao and F Archilli and A Artamonov and M Artuso and K Arzymatov and E Aslanides and M Atzeni and B Audurier and S Bachmann and M Bachmayer and Back, {J J} and A Bailly-Reyre and {Baladron Rodriguez}, P and V Balagura and W Baldini and {Baptista de Souza Leite}, J and M Barbetti and Barlow, {R J} and S Barsuk and W Barter and M Bartolini and F Baryshnikov and {LHCb collaboration} and Marcel Merk and Chris Pawley and {de Vries}, Jacco and Keri Vos and {C{\'a}mpora P{\'e}rez}, {Daniel Hugo}",
year = "2023",
month = jul,
day = "24",
doi = "10.1103/PhysRevLett.131.042302",
language = "English",
volume = "131",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "4",
}