Medium-Induced Modification of Z -Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector

ATLAS Collaboration; G Aad; Torsten Åkesson; Simona Bocchetta; Eric Edward Corrigan; Caterina Doglioni; Jannik Geisen; Kristian Gregersen; Eva Brottmann Hansen; Vincent Hedberg; Göran Jarlskog; Edgar Kellermann; Balazs Konya; Else Lytken; Katja Mankinen; Caterina Marcon; Ulf Mjörnmark; Geoffrey André Adrien Mullier; Ruth Pöttgen; Trine Poulsen; Eleni Skorda; Oxana Smirnova; L Zwalinski

doi:10.1103/PhysRevLett.126.072301

Medium-Induced Modification of Z -Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector

ATLAS Collaboration, G Aad, Torsten Åkesson, Simona Bocchetta, Eric Edward Corrigan, Caterina Doglioni, Jannik Geisen, Kristian Gregersen, Eva Brottmann Hansen, Vincent Hedberg, Göran Jarlskog, Edgar Kellermann, Balazs Konya, Else Lytken, Katja Mankinen, Caterina Marcon, Ulf Mjörnmark, Geoffrey André Adrien Mullier, Ruth Pöttgen, Trine PoulsenEleni Skorda, Oxana Smirnova, L Zwalinski

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Abstract

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. © 2021 CERN.

Original language	English
Article number	072301
Journal	Physical Review Letters
Volume	126
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.126.072301
Publication status	Published - 2021

Subject classification (UKÄ)

Subatomic Physics

Free keywords

Bosons
Charged particles
Colliding beam accelerators
Energy dissipation
ATLAS detectors
Induced energy
Large Hadron Collider
Quark-gluon plasma
Theoretical calculations
Transverse momenta
Z Bosons
Lead compounds

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10.1103/PhysRevLett.126.072301

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ATLAS Collaboration, Aad, G., Åkesson, T., Bocchetta, S., Corrigan, E. E., Doglioni, C., Geisen, J., Gregersen, K., Brottmann Hansen, E., Hedberg, V., Jarlskog, G., Kellermann, E., Konya, B., Lytken, E., Mankinen, K., Marcon, C., Mjörnmark, U., Mullier, G. A. A., Pöttgen, R., ... Zwalinski, L. (2021). Medium-Induced Modification of Z -Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector. Physical Review Letters, 126(7), Article 072301. https://doi.org/10.1103/PhysRevLett.126.072301

@article{665f55228ea349778b978971730e2d90,

title = "Medium-Induced Modification of Z -Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector",

abstract = "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. {\textcopyright} 2021 CERN.",

keywords = "Bosons, Charged particles, Colliding beam accelerators, Energy dissipation, ATLAS detectors, Induced energy, Large Hadron Collider, Quark-gluon plasma, Theoretical calculations, Transverse momenta, Z Bosons, Lead compounds",

author = "{ATLAS Collaboration} and G Aad and Torsten {\AA}kesson and Simona Bocchetta and Corrigan, {Eric Edward} and Caterina Doglioni and Jannik Geisen and Kristian Gregersen and {Brottmann Hansen}, Eva and Vincent Hedberg and G{\"o}ran Jarlskog and Edgar Kellermann and Balazs Konya and Else Lytken and Katja Mankinen and Caterina Marcon and Ulf Mj{\"o}rnmark and Mullier, {Geoffrey Andr{\'e} Adrien} and Ruth P{\"o}ttgen and Trine Poulsen and Eleni Skorda and Oxana Smirnova and L Zwalinski",

year = "2021",

doi = "10.1103/PhysRevLett.126.072301",

language = "English",

volume = "126",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

number = "7",

}

ATLAS Collaboration, Aad, G, Åkesson, T, Bocchetta, S, Corrigan, EE, Doglioni, C, Geisen, J, Gregersen, K, Brottmann Hansen, E, Hedberg, V , Jarlskog, G, Kellermann, E, Konya, B , Lytken, E, Mankinen, K, Marcon, C, Mjörnmark, U, Mullier, GAA, Pöttgen, R, Poulsen, T, Skorda, E, Smirnova, O & Zwalinski, L 2021, 'Medium-Induced Modification of Z -Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector', Physical Review Letters, vol. 126, no. 7, 072301. https://doi.org/10.1103/PhysRevLett.126.072301

TY - JOUR

T1 - Medium-Induced Modification of Z -Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector

AU - ATLAS Collaboration

AU - Aad, G

AU - Åkesson, Torsten

AU - Bocchetta, Simona

AU - Corrigan, Eric Edward

AU - Doglioni, Caterina

AU - Geisen, Jannik

AU - Gregersen, Kristian

AU - Brottmann Hansen, Eva

AU - Hedberg, Vincent

AU - Jarlskog, Göran

AU - Kellermann, Edgar

AU - Konya, Balazs

AU - Lytken, Else

AU - Mankinen, Katja

AU - Marcon, Caterina

AU - Mjörnmark, Ulf

AU - Mullier, Geoffrey André Adrien

AU - Pöttgen, Ruth

AU - Poulsen, Trine

AU - Skorda, Eleni

AU - Smirnova, Oxana

AU - Zwalinski, L

PY - 2021

Y1 - 2021

N2 - 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. © 2021 CERN.

AB - 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. © 2021 CERN.

KW - Bosons

KW - Charged particles

KW - Colliding beam accelerators

KW - Energy dissipation

KW - ATLAS detectors

KW - Induced energy

KW - Large Hadron Collider

KW - Quark-gluon plasma

KW - Theoretical calculations

KW - Transverse momenta

KW - Z Bosons

KW - Lead compounds

U2 - 10.1103/PhysRevLett.126.072301

DO - 10.1103/PhysRevLett.126.072301

M3 - Article

C2 - 33666476

SN - 1079-7114

VL - 126

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

M1 - 072301

ER -

Medium-Induced Modification of Z -Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector

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Subject classification (UKÄ)

Free keywords

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