@misc{10481/85508, year = {2023}, month = {8}, url = {https://hdl.handle.net/10481/85508}, abstract = {Jet quenching is the process of color-charged partons losing energy via interactions with quark-gluon plasma droplets created in heavy-ion collisions. The collective expansion of such droplets is well described by viscous hydrodynamics. Similar evidence of collectivity is consistently observed in smaller collision systems, including pp and p þ Pb collisions. In contrast, while jet quenching is observed in Pb þ Pb collisions, no evidence has been found in these small systems to date, raising fundamental questions about the nature of the system created in these collisions. The ATLAS experiment at the Large Hadron Collider has measured the yield of charged hadrons correlated with reconstructed jets in 0.36 nb−1 of p þ Pb and 3.6 pb−1 of pp collisions at 5.02 TeV. The yields of charged hadrons with pch T > 0.5 GeV near and opposite in azimuth to jets with pjet T > 30 or 60 GeV, and the ratios of these yields between p þ Pb and pp collisions, IpPb, are reported. The collision centrality of p þ Pb events is categorized by the energy deposited by forward neutrons from the struck nucleus. The IpPb values are consistent with unity within a few percent for hadrons with pch T > 4 GeV at all centralities. These data provide new, strong constraints that preclude almost any parton energy loss in central p þ Pb collisions.}, organization = {BSF-NSF}, organization = {CEA-DRF}, organization = {Cantons of Bern and Geneva}, organization = {DNSRC IN2P3-CNRS}, organization = {EU-ESF}, organization = {GenT Programmes Generalitat Valenciana, Spain}, organization = {GridKA}, organization = {INFN-CNAF}, organization = {La Caixa Banking Foundation}, organization = {MIZŠ}, organization = {MNE}, organization = {NDGF}, organization = {NDGF}, organization = {Norwegian Financial Mechanism 2014-2021}, organization = {PROMETEO}, organization = {RGC}, organization = {UNCE SCI/013}, organization = {UNCE SCI/013}, organization = {Wallenberg Foundation}, organization = {U.S. Department of Energy}, organization = {Alexander von Humboldt-Stiftung}, organization = {Alabama Space Grant Consortium}, organization = {Brookhaven National Laboratory}, organization = {CRC Health Group}, organization = {Canarie}, organization = {Karlsruhe Institute of Technology}, organization = {H2020 Marie Skłodowska-Curie Actions}, organization = {Multiple Sclerosis Scientific Research Foundation}, organization = {CERN}, organization = {Compute Canada}, organization = {Göran Gustafssons Stiftelser}, organization = {Natural Sciences and Engineering Research Council of Canada}, organization = {National Research Council Canada}, organization = {Canada Foundation for Innovation}, organization = {Science and Technology Facilities Council}, organization = {Leverhulme Trust}, organization = {European Research Council}, organization = {European Cooperation in Science and Technology}, organization = {Australian Research Council}, organization = {National Stroke Foundation}, organization = {Neurosurgical Research Foundation}, organization = {Helmholtz-Gemeinschaft}, organization = {Helmholtz-Gemeinschaft}, organization = {Minerva Foundation}, organization = {Deutsche Forschungsgemeinschaft}, organization = {Agence Nationale de la Recherche}, organization = {Japan Society for the Promotion of Science}, organization = {Ministry of Education, Culture, Sports, Science and Technology}, organization = {Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung}, organization = {Danmarks Grundforskningsfond}, organization = {Fundação de Amparo à Pesquisa do Estado de São Paulo}, organization = {National Natural Science Foundation of China}, organization = {Fundação para a Ciência e a Tecnologia}, organization = {Bundesministerium für Bildung und Forschung}, organization = {Chinese Academy of Sciences}, organization = {Austrian Science Fund}, organization = {Generalitat de Catalunya}, organization = {Ministry of Science and Technology of the People's Republic of China}, organization = {Agencia Nacional de Promoción Científica y Tecnológica}, organization = {Nederlandse Organisatie voor Wetenschappelijk Onderzoek}, organization = {Bundesministerium für Wissenschaft, Forschung und Wirtschaft}, organization = {Conselho Nacional de Desenvolvimento Científico e Tecnológico}, organization = {Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science}, organization = {Israel Science Foundation}, organization = {Instituto Nazionale di Fisica Nucleare}, organization = {Narodowe Centrum Nauki}, organization = {Javna Agencija za Raziskovalno Dejavnost RS}, organization = {Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja}, organization = {Ministerio de Ciencia e Innovación}, organization = {Centre National pour la Recherche Scientifique et Technique}, organization = {Staatssekretariat für Bildung, Forschung und Innovation}, organization = {Horizon 2020}, organization = {British Columbia Knowledge Development Fund}, organization = {European Regional Development Fund}, organization = {Defence Science Institute}, organization = {Narodowa Agencja Wymiany Akademickiej}, organization = {Institutul de Fizică Atomică}, organization = {Agencia Nacional de Investigación y Desarroll}, organization = {Royal Society of South Australia}, publisher = {American Physical Society}, title = {Strong Constraints on Jet Quenching in Centrality-Dependent p + Pb Collisions at 5.02 TeV from ATLAS}, doi = {10.1103/PhysRevLett.131.072301}, author = {Atlas Collaboration and Aguilar Saavedra, Juan Antonio and Rodríguez Chala, Mikael}, }