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Medium-induced modification of Z-tagged charged particle yields in Pb + Pb collisions at 5.02 TeV with the ATLAS detector

The yield of charged particles opposite to a Z boson with large transverse momentum (pT) is measured in 260 pb−1 of pp and 1.7 nb−1 of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The Z boson tag is used to select hard-scattered par...

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Hauptverfasser: Aad, Georges (Verfasst von) , Andrei, George Victor (Verfasst von) , Bartels, Falk (Verfasst von) , Bolz, Arthur (Verfasst von) , Czurylo, Marta (Verfasst von) , Dittmeier, Sebastian (Verfasst von) , Dunford, Monica (Verfasst von) , Ferreira de Lima, Danilo Enoque (Verfasst von) , Franchino, Silvia (Verfasst von) , Jongmanns, Jan (Verfasst von) , Klassen, Martin (Verfasst von) , Krishnan, Anjali (Verfasst von) , Mkrtchyan, Tigran (Verfasst von) , Napolitano, Fabrizio (Verfasst von) , Ott, Philipp (Verfasst von) , Schöning, André (Verfasst von) , Schultz-Coulon, Hans-Christian (Verfasst von) , Spieker, Thomas (Verfasst von) , Stamen, Rainer (Verfasst von) , Starovoitov, Pavel (Verfasst von) , Vigani, Luigi (Verfasst von) , Weber, Sebastian (Verfasst von) , Wessels, Martin (Verfasst von) , Yue, Xiaoguang (Verfasst von)
Körperschaft: ATLAS Collaboration (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 19 February 2021
In: Physical review letters
Year: 2021, Jahrgang: 126, Heft: 7, Pages: 1-20
ISSN:1079-7114
DOI:10.1103/PhysRevLett.126.072301
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.126.072301
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.126.072301
Volltext
Verfasserangaben:The ATLAS Collaboration
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Zusammenfassung:The yield of charged particles opposite to a Z boson with large transverse momentum (pT) is measured in 260 pb−1 of pp and 1.7 nb−1 of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The Z boson tag is used to select hard-scattered partons with specific kinematics, and to observe how their showers are modified as they propagate through the quark-gluon plasma created in Pb+Pb collisions. Compared with pp collisions, charged-particle yields in Pb+Pb collisions show significant modifications as a function of charged-particle pT in a way that depends on event centrality and Z boson pT. The data are compared with a variety of theoretical calculations and provide new information about the medium-induced energy loss of partons in a pT regime difficult to measure through other channels.
Beschreibung:Gesehen am 12.03.2021
Beschreibung:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.126.072301

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