Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low- p T Jets from Measurements in pp and Central Pb-Pb Collisions at sNN =5.02 TeV

(ALICE Collaboration)

doi:10.1103/PhysRevLett.133.022301

Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low- p T Jets from Measurements in pp and Central Pb-Pb Collisions at sNN =5.02 TeV

(ALICE Collaboration)

Sección de Física

Université Clermont Auvergne
Czech Academy of Sciences
CERN
Sezione INFN
National Institute for Nuclear Physics
Variable Energy Cyclotron Centre
Aligarh Muslim University
Korea Institute of Science and Technology Information
Pavol Jozef Šafárik University
GSI Helmholtzzentrum für Schwerionenforschung
Central China Normal University
Universidad Nacional Autónoma de México
University of Houston
University of Bergen
Goethe University Frankfurt
Technical University of Munich
Benemérita Universidad Autónoma de Puebla
National Institute for Physics and Nuclear Engineering
University of Derby
University of Münster
Ruprecht-Karls-Universität Heidelberg
Lawrence Berkeley National Laboratory
Nantes Université
Université Grenoble Alpes
Universidade de São Paulo
University of Oslo
Yale University
Tokyo University
Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN
Sungkyunkwan University
Gangneung-Wonju National University
University of Science and Technology of China
Indian Institute of Technology Indore
CNRS-IN2P3
AGH University of Krakow
Bose Institute
University of Jammu
Università and Sezione INFN
National and Kapodistrian University of Athens
Gauhati University
Wigner Research Centre for Physics
STFC Daresbury Laboratory
University of Liverpool
University of Lund
Indian Institute of Technology Bombay
University of Copenhagen
Université de Strasbourg
Institute of Space Science (ISS)
INFN, Laboratori Nazionali Di Frascati
Faculty of Nuclear Sciences and Physical Engineering
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
University of Texas at Austin
Frankfurt Institute for Advanced Studies
University of Pavia
Oak Ridge National Laboratory
Inha University
Università di Brescia
Polytechnic University of Bari
Austrian Academy of Sciences
National Research Foundation
University of the Witwatersrand
Dipartimento di Fisica ‘E.R. Caianiello’ dell’Università
Pontifical Catholic Univ. of Peru
Universidad Autonoma de Sinaloa
National University of Science and Technology POLITEHNICA Bucharest
Université de Lyon
Homi Bhabha National Institute
Universidade Estadual de Campinas
Max Planck Institute for Physics (Werner Heisenberg Institute)
National Institute for Subatomic Physics
University of Tsukuba
Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile
University of Birmingham
Università del Piemonte Orientale and Gruppo Collegato INFN
Universidade Federal do ABC
University of California at Berkeley
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Cape Town
Warsaw University of Technology
Panjab University
Technical University of Košice
Comenius University
Hiroshima University
Politecnico di Torino
Saga University
Chicago State University
University of Kansas
Universidade Federal do Rio Grande do Sul
University of Tennessee
Nagasaki Institute of Applied Science
Wayne State University
University of Split
Institute for Subatomic Physics of Utrecht University
A. Alikhanian Yerevan Institute of Physics
Yonsei University
University of Jyväskylä
Rheinische Friedrich-Wilhelms-Universität Bonn
Western Norway University of Applied Sciences
Centro de Investigación y de Estudios AVanzados (CINVESTAV)
Ohio State University
COMSATS University Islamabad
National Research and Innovation Agency Republic of Indonesia
Pusan National University
China Institute of Atomic Energy
Suranaree University of Technology
Slovak Academy of Sciences
KTO Karatay University
Yildiz Technical University
University of Zagreb
Zentrum für Technologie und Transfer (ZTT)
Jeonbuk National University
Sejong University
California Polytechnic State University, San Luis Obispo
Sofia University St. Kliment Ohridski
National Centre for Nuclear Studies
University of South-Eastern Norway
Fudan University
University of Messina
Università degli Studi di Foggia
University of Helsinki
Chungbuk National University
China University of Geosciences
Creighton University
University of Wrocław
National Nuclear Research Center
Eberhard Karls Universität Tübingen
Nara Women's University
Bogolyubov Institute for Theoretical Physics Nasu
Institute of Physics of the Czech Academy of Sciences

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12 Scopus citations

Abstract

The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high pT) hadron trigger in proton-proton and central Pb-Pb collisions at sNN=5.02 TeV. A data-driven statistical method is used to mitigate the large uncorrelated background in central Pb-Pb collisions. Recoil jet distributions are reported for jet resolution parameter R=0.2, 0.4, and 0.5 in the range 7<pT,jet<140 GeV/c and trigger-recoil jet azimuthal separation π/2<Δφ<π. The measurements exhibit a marked medium-induced jet yield enhancement at low pT and at large azimuthal deviation from Δφ∼π. The enhancement is characterized by its dependence on Δφ, which has a slope that differs from zero by 4.7σ. Comparisons to model calculations incorporating different formulations of jet quenching are reported. These comparisons indicate that the observed yield enhancement arises from the response of the QGP medium to jet propagation.

Original language	English
Article number	022301
Journal	Physical Review Letters
Volume	133
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.133.022301
State	Published - 12 Jul 2024

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10.1103/PhysRevLett.133.022301

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@article{035a6e339fa047ee9615e685b1021a20,

title = "Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low- p T Jets from Measurements in pp and Central Pb-Pb Collisions at sNN =5.02 TeV",

abstract = "The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high pT) hadron trigger in proton-proton and central Pb-Pb collisions at sNN=5.02 TeV. A data-driven statistical method is used to mitigate the large uncorrelated background in central Pb-Pb collisions. Recoil jet distributions are reported for jet resolution parameter R=0.2, 0.4, and 0.5 in the range 7",

author = "\{(ALICE Collaboration)\} and S. Acharya and D. Adamov{\'a} and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and I. Ahuja and A. Akindinov and M. Al-Turany and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and B. Ali and A. Alici and N. Alizadehvandchali and A. Alkin and J. Alme and G. Alocco and T. Alt and Altamura, \{A. R.\} and I. Altsybeev and Alvarado, \{J. R.\} and Anaam, \{M. N.\} and C. Andrei and N. Andreou and A. Andronic and V. Anguelov and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and C. Arata and S. Arcelli and M. Aresti and R. Arnaldi and Arneiro, \{J. G.M.C.A.\} and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and H. Baba and A. Badal{\`a} and J. Bae and \{Bazo Alba\}, \{J. L.\} and Gago, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} 2024 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by CERN.",

year = "2024",

month = jul,

day = "12",

doi = "10.1103/PhysRevLett.133.022301",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "2",

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TY - JOUR

T1 - Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low- p T Jets from Measurements in pp and Central Pb-Pb Collisions at sNN =5.02 TeV

AU - (ALICE Collaboration)

AU - Acharya, S.

AU - Adamová, D.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Alici, A.

AU - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altamura, A. R.

AU - Altsybeev, I.

AU - Alvarado, J. R.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, N.

AU - Andronic, A.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arata, C.

AU - Arcelli, S.

AU - Aresti, M.

AU - Arnaldi, R.

AU - Arneiro, J. G.M.C.A.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Baba, H.

AU - Badalà, A.

AU - Bae, J.

AU - Bazo Alba, J. L.

AU - Gago, A. M.

N1 - Publisher Copyright: © 2024 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by CERN.

PY - 2024/7/12

Y1 - 2024/7/12

N2 - The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high pT) hadron trigger in proton-proton and central Pb-Pb collisions at sNN=5.02 TeV. A data-driven statistical method is used to mitigate the large uncorrelated background in central Pb-Pb collisions. Recoil jet distributions are reported for jet resolution parameter R=0.2, 0.4, and 0.5 in the range 7

AB - The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high pT) hadron trigger in proton-proton and central Pb-Pb collisions at sNN=5.02 TeV. A data-driven statistical method is used to mitigate the large uncorrelated background in central Pb-Pb collisions. Recoil jet distributions are reported for jet resolution parameter R=0.2, 0.4, and 0.5 in the range 7

UR - https://www.scopus.com/pages/publications/85198282865

U2 - 10.1103/PhysRevLett.133.022301

DO - 10.1103/PhysRevLett.133.022301

M3 - Article

C2 - 39073970

AN - SCOPUS:85198282865

SN - 0031-9007

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 022301

ER -

Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low- p T Jets from Measurements in pp and Central Pb-Pb Collisions at sNN =5.02 TeV

Abstract

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