Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV

The CMS collaboration

doi:10.1007/JHEP06(2025)120

Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV

The CMS collaboration

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Scuola Superiore Meridionale
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CERN
A. Alikhanian Yerevan Institute of Physics
Yerevan State University
Austrian Academy of Sciences
TU Wien
University of Antwerp
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Bulgarian Academy of Sciences
Sofia University St. Kliment Ohridski
Universidad de Tarapacá
Beihang University
Tsinghua University
CAS - Institute of High Energy Physics
University of Chinese Academy of Sciences
China Center of Advanced Science and Technology World Laboratory
China Spallation Neutron Source
Peking University
South China Normal University
Sun Yat-Sen University
University of Science and Technology of China
Nanjing Normal University
Henan Normal University
University of Shanghai for Science and Technology
University of Iowa
CAS - Institute of Modern Physics
Zhejiang University
Universidad de los Andes Colombia
Universidad de Antioquia
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Ruder Boskovic Institute
University of Cyprus
Charles University
Escuela Politécnica Nacional
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The British University in Egypt
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Eötvös Loránd University
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University of Hyderabad
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Arak University
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University of Bologna
Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile
University of Catania
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Guglielmo Marconi University
University of Genoa
University of Milan - Bicocca
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Academy of Sciences of the Republic of Uzbekistan

科研成果: 期刊稿件 › 文章 › 同行评审

摘要

The jet axis decorrelation in inclusive jets is studied using lead-lead (PbPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The jet axis decorrelation is defined as the angular difference between two definitions of the jet axis. It is obtained by applying two recombination schemes on all the constituents of a given jet reconstructed by the anti-k_T sequential algorithm with a distance parameter of R = 0.4. The data set, corresponding to an integrated luminosity of 0.66 nb⁻¹, was collected in 2018 with the CMS detector at the CERN LHC. The jet axis decorrelations are examined across collision centrality selections and intervals of jet transverse momentum. A centrality dependent evolution of the measured distributions is observed, with a progressive narrowing seen in more central events. This narrowing could result from medium-induced modification of the internal jet structure or reflect color charge effects in energy loss. This new measurement probes jet substructure in previously unexplored kinematic domains and show great promise for providing new insights on the color charge dependence of energy loss to jet-quenching models.

源语言	英语
文章编号	120
期刊	Journal of High Energy Physics
卷	2025
期	6
DOI	https://doi.org/10.1007/JHEP06(2025)120
出版状态	已出版 - 6月 2025

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10.1007/JHEP06(2025)120

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title = "Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV",

abstract = "The jet axis decorrelation in inclusive jets is studied using lead-lead (PbPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The jet axis decorrelation is defined as the angular difference between two definitions of the jet axis. It is obtained by applying two recombination schemes on all the constituents of a given jet reconstructed by the anti-kT sequential algorithm with a distance parameter of R = 0.4. The data set, corresponding to an integrated luminosity of 0.66 nb−1, was collected in 2018 with the CMS detector at the CERN LHC. The jet axis decorrelations are examined across collision centrality selections and intervals of jet transverse momentum. A centrality dependent evolution of the measured distributions is observed, with a progressive narrowing seen in more central events. This narrowing could result from medium-induced modification of the internal jet structure or reflect color charge effects in energy loss. This new measurement probes jet substructure in previously unexplored kinematic domains and show great promise for providing new insights on the color charge dependence of energy loss to jet-quenching models.",

keywords = "Heavy Ion Experiments, Heavy-Ion Collision, Jets, Quark Gluon Plasma",

author = "\{The CMS collaboration\} and V. Chekhovsky and A. Hayrapetyan and V. Makarenko and A. Tumasyan and W. Adam and Andrejkovic, \{J. W.\} and L. Benato and T. Bergauer and S. Chatterjee and K. Damanakis and M. Dragicevic and Hussain, \{P. S.\} and M. Jeitler and N. Krammer and A. Li and D. Liko and I. Mikulec and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and M. Sonawane and W. Waltenberger and Wulz, \{C. E.\} and T. Janssen and H. Kwon and \{Van Laer\}, T. and \{Van Mechelen\}, P. and N. Breugelmans and J. D{\textquoteright}Hondt and S. Dansana and \{De Moor\}, A. and M. Delcourt and F. Heyen and Y. Hong and S. Lowette and I. Makarenko and D. M{\"u}ller and S. Tavernier and M. Tytgat and \{Van Onsem\}, \{G. P.\} and \{Van Putte\}, S. and D. Vannerom and B. Bilin and B. Clerbaux and Das, \{A. K.\} and \{De Bruyn\}, I. and \{De Lentdecker\}, G. and H. Evard and L. Favart and T. Cheng",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = jun,

doi = "10.1007/JHEP06(2025)120",

language = "英语",

volume = "2025",

journal = "Journal of High Energy Physics",

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T1 - Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV

AU - The CMS collaboration

AU - Chekhovsky, V.

AU - Hayrapetyan, A.

AU - Makarenko, V.

AU - Tumasyan, A.

AU - Adam, W.

AU - Andrejkovic, J. W.

AU - Benato, L.

AU - Bergauer, T.

AU - Chatterjee, S.

AU - Damanakis, K.

AU - Dragicevic, M.

AU - Hussain, P. S.

AU - Jeitler, M.

AU - Krammer, N.

AU - Li, A.

AU - Liko, D.

AU - Mikulec, I.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Sonawane, M.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Janssen, T.

AU - Kwon, H.

AU - Van Laer, T.

AU - Van Mechelen, P.

AU - Breugelmans, N.

AU - D’Hondt, J.

AU - Dansana, S.

AU - De Moor, A.

AU - Delcourt, M.

AU - Heyen, F.

AU - Hong, Y.

AU - Lowette, S.

AU - Makarenko, I.

AU - Müller, D.

AU - Tavernier, S.

AU - Tytgat, M.

AU - Van Onsem, G. P.

AU - Van Putte, S.

AU - Vannerom, D.

AU - Bilin, B.

AU - Clerbaux, B.

AU - Das, A. K.

AU - De Bruyn, I.

AU - De Lentdecker, G.

AU - Evard, H.

AU - Favart, L.

AU - Cheng, T.

PY - 2025/6

Y1 - 2025/6

N2 - The jet axis decorrelation in inclusive jets is studied using lead-lead (PbPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The jet axis decorrelation is defined as the angular difference between two definitions of the jet axis. It is obtained by applying two recombination schemes on all the constituents of a given jet reconstructed by the anti-kT sequential algorithm with a distance parameter of R = 0.4. The data set, corresponding to an integrated luminosity of 0.66 nb−1, was collected in 2018 with the CMS detector at the CERN LHC. The jet axis decorrelations are examined across collision centrality selections and intervals of jet transverse momentum. A centrality dependent evolution of the measured distributions is observed, with a progressive narrowing seen in more central events. This narrowing could result from medium-induced modification of the internal jet structure or reflect color charge effects in energy loss. This new measurement probes jet substructure in previously unexplored kinematic domains and show great promise for providing new insights on the color charge dependence of energy loss to jet-quenching models.

AB - The jet axis decorrelation in inclusive jets is studied using lead-lead (PbPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The jet axis decorrelation is defined as the angular difference between two definitions of the jet axis. It is obtained by applying two recombination schemes on all the constituents of a given jet reconstructed by the anti-kT sequential algorithm with a distance parameter of R = 0.4. The data set, corresponding to an integrated luminosity of 0.66 nb−1, was collected in 2018 with the CMS detector at the CERN LHC. The jet axis decorrelations are examined across collision centrality selections and intervals of jet transverse momentum. A centrality dependent evolution of the measured distributions is observed, with a progressive narrowing seen in more central events. This narrowing could result from medium-induced modification of the internal jet structure or reflect color charge effects in energy loss. This new measurement probes jet substructure in previously unexplored kinematic domains and show great promise for providing new insights on the color charge dependence of energy loss to jet-quenching models.

KW - Heavy Ion Experiments

KW - Heavy-Ion Collision

KW - Jets

KW - Quark Gluon Plasma

UR - https://www.scopus.com/pages/publications/105012488211

U2 - 10.1007/JHEP06(2025)120

DO - 10.1007/JHEP06(2025)120

M3 - 文章

AN - SCOPUS:105012488211

SN - 1029-8479

VL - 2025

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 6

M1 - 120

ER -

Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV

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