Strong constraints on jet quenching in centrality-dependent p + Pb collisions at 5.02 TeV from ATLAS

0577499 - FZÚ 2024 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2900 authors
Strong constraints on jet quenching in centrality-dependent p + Pb collisions at 5.02 TeV from ATLAS.
Physical Review Letters. Roč. 131, č. 7 (2023), č. článku 072301. ISSN 0031-9007. E-ISSN 1079-7114
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : quark gluon: plasma * pp: scattering * GeV * hadron
OECD category: Particles and field physics
Impact factor: 8.6, year: 2022
Method of publishing: Open access

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+Pb collisions. In contrast, while jet quenching is observed in Pb+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+Pb and 3.6  pb-1 of pp collisions at 5.02 TeV. The yields of charged hadrons with pTch>0.5  GeV near and opposite in azimuth to jets with pTjet>30 or 60 GeV, and the ratios of these yields between p+Pb and pp collisions, IpPb, are reported.
Permanent Link: https://hdl.handle.net/11104/0346623