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Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low-p_{T} Jets from Measurements in pp and Central Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV.
Acharya, S; Adamová, D; Aglieri Rinella, G; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, S U; Ahuja, I; Akindinov, A; Al-Turany, M; Aleksandrov, D; Alessandro, B; Alfanda, H M; Alfaro Molina, R; Ali, B; Alici, A; Alizadehvandchali, N; Alkin, A; Alme, J; Alocco, G; Alt, T; Altamura, A R; Altsybeev, I; Alvarado, J R; Anaam, M N; Andrei, C; Andreou, N; Andronic, A; Anguelov, V; Antinori, F; Antonioli, P; Apadula, N; Aphecetche, L; Appelshäuser, H; Arata, C; Arcelli, S; Aresti, M; Arnaldi, R; Arneiro, J G M C A; Arsene, I C; Arslandok, M; Augustinus, A; Averbeck, R; Azmi, M D; Baba, H; Badalà, A; Bae, J; Baek, Y W; Bai, X.
Afiliação
  • Acharya S; Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
  • Adamová D; Nuclear Physics Institute of the Czech Academy of Sciences, Husinec-Rez, Czech Republic.
  • Aglieri Rinella G; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Agnello M; Dipartimento DISAT del Politecnico and Sezione INFN, Turin, Italy.
  • Agrawal N; INFN, Sezione di Bologna, Bologna, Italy.
  • Ahammed Z; Variable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, India.
  • Ahmad S; Department of Physics, Aligarh Muslim University, Aligarh, India.
  • Ahn SU; Korea Institute of Science and Technology Information, Daejeon, Republic of Korea.
  • Ahuja I; Faculty of Science, P.J. Safárik University, Kǒsice, Slovak Republic.
  • Akindinov A; Affiliated with an institute covered by a cooperation agreement with CERN.
  • Al-Turany M; Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany.
  • Aleksandrov D; Affiliated with an institute covered by a cooperation agreement with CERN.
  • Alessandro B; INFN, Sezione di Torino, Turin, Italy.
  • Alfanda HM; Central China Normal University, Wuhan, China.
  • Alfaro Molina R; Instituto de Física, Universidad Nacional Autónoma de México, Mexico City, Mexico.
  • Ali B; Department of Physics, Aligarh Muslim University, Aligarh, India.
  • Alici A; Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, Italy.
  • Alizadehvandchali N; University of Houston, Houston, Texas, USA.
  • Alkin A; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Alme J; Department of Physics and Technology, University of Bergen, Bergen, Norway.
  • Alocco G; INFN, Sezione di Cagliari, Cagliari, Italy.
  • Alt T; Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany.
  • Altamura AR; INFN, Sezione di Bari, Bari, Italy.
  • Altsybeev I; Physik Department, Technische Universität München, Munich, Germany.
  • Alvarado JR; High Energy Physics Group, Universidad Autónoma de Puebla, Puebla, Mexico.
  • Anaam MN; Central China Normal University, Wuhan, China.
  • Andrei C; Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania.
  • Andreou N; University of Derby, Derby, United Kingdom.
  • Andronic A; Universität Münster, Institut für Kernphysik, Münster, Germany.
  • Anguelov V; Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
  • Antinori F; INFN, Sezione di Padova, Padova, Italy.
  • Antonioli P; INFN, Sezione di Bologna, Bologna, Italy.
  • Apadula N; Lawrence Berkeley National Laboratory, Berkeley, California, USA.
  • Aphecetche L; SUBATECH, IMT Atlantique, Nantes Université, CNRS-IN2P3, Nantes, France.
  • Appelshäuser H; Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany.
  • Arata C; Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS-IN2P3, Grenoble, France.
  • Arcelli S; Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, Italy.
  • Aresti M; Dipartimento di Fisica dell'Università and Sezione INFN, Cagliari, Italy.
  • Arnaldi R; INFN, Sezione di Torino, Turin, Italy.
  • Arneiro JGMCA; Universidade de São Paulo (USP), São Paulo, Brazi.
  • Arsene IC; Department of Physics, University of Oslo, Oslo, Norway.
  • Arslandok M; Yale University, New Haven, Connecticut, USA.
  • Augustinus A; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Averbeck R; Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany.
  • Azmi MD; Department of Physics, Aligarh Muslim University, Aligarh, India.
  • Baba H; University of Tokyo, Tokyo, Japan.
  • Badalà A; INFN, Sezione di Catania, Catania, Italy.
  • Bae J; Sungkyunkwan University, Suwon City, Republic of Korea.
  • Baek YW; Gangneung-Wonju National University, Gangneung, Republic of Korea.
  • Bai X; University of Science and Technology of China, Hefei, China.
Phys Rev Lett ; 133(2): 022301, 2024 Jul 12.
Article em En | MEDLINE | ID: mdl-39073970
ABSTRACT
The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high p_{T}) hadron trigger in proton-proton and central Pb-Pb collisions at sqrt[s_{NN}]=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 7separation π/2<Δφ<π. The measurements exhibit a marked medium-induced jet yield enhancement at low p_{T} 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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article