Measurement of the groomed jet mass in PbPb and pp collisions at √sNN=5.02 TeV

The CMS collaboration

doi:10.1007/JHEP10(2018)161

Measurement of the groomed jet mass in PbPb and pp collisions at √sNN=5.02 TeV

The CMS collaboration

Física

University of Trento
CERN
A. Alikhanian Yerevan Institute of Physics
Institut für Hochenergiephysik der OeAW
TU Wien
Belarusian State University
University of Antwerp
Vrije Universiteit Brussel
Université Libre de Bruxelles
Ghent University
Université Paris-Saclay
Université catholique de Louvain
Centro Brasileiro de Pesquisas Fisicas
Universidade do Estado do Rio de Janeiro
Universidade Estadual de Campinas
Universidade Federal do Rio Grande do Sul
Universidade Estadual Paulista Júlio de Mesquita Filho
Universidade Federal do ABC
Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics Chinese Academy of Science
University of Chinese Academy of Sciences
Peking University
Tsinghua University
Universidad de los Andes Colombia
University of Split
Faculty of Science, University of Split
Institute Rudjer Boskovic
Institute for Theoretical and Experimental Physics
University of Cyprus
Charles University
Joint Institute for Nuclear Research, Dubna
Escuela Politecnica Nacional
Egyptian Network of High Energy Physics
Cairo University
Fayoum University
British University
Ain Shams University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
King Abdulaziz University
Université de Strasbourg
Université de Haute-Alsace
IN2P3-CNRS
Universite Claude Bernard Lyon 1
Lomonosov Moscow State University
Georgian Technical University
Tbilisi State University
RWTH Aachen University
Deutsches Elektronen-Synchrotron (DESY)
University of Hamburg
Brandenburg University of Technology
Karlsruhe Institute of Technology
NCSR Demokritos
National and Kapodistrian University of Athens
National Technical University of Athens
University of Ioannina
Eötvös Loránd University
KFKI Research Institute for Particle and Nuclear Physics
Institute for Nuclear Research
University of Debrecen
Indian Institute of Science
National Institute of Science Education and Research
Indian Institute of Technology Bhubaneswar
Institute of Physics Bhubaneswar
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Shoolini University of Biotechnology and Management Sciences
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
Visva-Bharati University
Indian Institute of Science Education and Research Pune
Institute for Research for Fundamental Sciences
Isfahan University of Technology
Islamic Azad University
University College Dublin
INFN Sezione di Bari
Université di Bari
Polytechnic University of Bari
INFN Sezione di Bologna
University of Bologna
National Institute for Nuclear Physics
University of Catania
INFN Sezione di Firenze
University of Florence
University of Siena
University of Genoa
Université di Milano-Bicocca
INFN Sezione di Napoli
Université della Basilicata
University of Naples Federico II
Università G. Marconi
INFN Sezione di Padova
University of Padua
INFN Sezione di Pavia
Université di Pavia
INFN Sezione di Perugia
Université di Perugia
INFN Sezione di Pisa
University of Pisa
Scuola Normale Superiore di Pisa
Université di Roma La Sapienza
INFN Sezione di Torino
Université di Torino
University of Eastern Piedmont
INFN Sezione di Trieste
Université di Trieste
Kyungpook National University
Chonnam National University
Hanyang University
Kyung Hee University
Korea University
Sejong University
Seoul National University
University of Seoul
Sungkyunkwan University
Vilnius University
Universiti Malaya
International Islamic University of Malaysia
Malaysian Nuclear Agency
Universidad de Sonora
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Consejo Nacional de Ciencia y Tecnologia Mexico
Universidad Iberoamericana (UIA)
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosí
University of Auckland
University of Canterbury
Quaid-I-Azam University
National Centre for Nuclear Research
University of Warsaw
Warsaw University of Technology
Laboratório de Instrumentação e Fisica Experimental de Partículas
National Research Nuclear University ‘Moscow Engineering Physics Institute’ (MEPhI)
RAS - Institute for Nuclear Research
Petersburg Nuclear Physics Institute (PNPI)
St. Petersburg State Polytechnical University
University of Florida
Moscow Institute of Physics and Technology
RAS - P.N. Lebedev Physics Institute
California Institute of Technology
Novosibirsk State University
RAS - Budker Institute of Nuclear Physics
Institute for High Energy Physics
National Research Tomsk Polytechnic University
University of Belgrade
University of Belgrade
CIEMAT
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Universidad de Cantabria
Riga Technical University
Paul Scherrer Institut
University of Zurich
ETH Zurich
Austrian Academy of Sciences
National Central University
National Taiwan University
Chulalongkorn University
Cukurova University
Adiyaman University
Istanbul Aydin University
Mersin University
Piri Reis University
Gaziosmanpasa University
Middle East Technical University (METU)
Ozyegin University
Izmir Institute of Technology
Bogazici University
Marmara University
Kafkas University
Istanbul Bilgi University
Istanbul Technical University
Hacettepe University
Institute for Scintillation Materials of National Academy of Science of Ukraine
NASU - Kharkov Institute of Physics and Technology
University of Bristol
Rutherford Appleton Laboratory
University of Southampton
Imperial College London
Monash University
Brunel University London
Baylor University
Catholic University of America
University of Alabama
Boston University
Brown University
Bethel University
Karamanoğlu Mehmetbey University
University of California, Davis
University of California at Los Angeles
University of California at Riverside
University of California at San Diego
Utah Valley University
University of California at Santa Barbara
Carnegie Mellon University
University of Colorado at Boulder
Cornell University
Fermi National Accelerator Laboratory
Purdue University
Florida International University
Florida State University
Florida Institute of Technology
University of Illinois at Chicago
University of Iowa
Beykent University
Bingol University
Sinop University
Mimar Sinan Guzel Sanatlar University
Johns Hopkins University
University of Kansas
Kansas State University
Lawrence Livermore National Laboratory
University of Maryland, College Park
Massachusetts Institute of Technology
University of Minnesota-Twin Cities
University of Mississippi
University of Nebraska-Lincoln
State University of New York at Buffalo
Northeastern University
Northwestern University
University of Notre Dame
Ohio State University
Princeton University
University of Puerto Rico
Purdue University Calumet
Rice University
University of Rochester
Rutgers University–New Brunswick
University of Tennessee
Texas AandM University
Texas A&M University at Qatar
Texas Tech University
Vanderbilt University
University of Virginia
Wayne State University
University of Wisconsin-Madison

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

A measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially removes soft constituents of a jet until a pair of hard subjets is found. The resulting groomed jets can be used to study modifications to the parton shower evolution in the presence of the hot and dense medium created in heavy ion collisions. Predictions of groomed jet properties from the pythia and herwig++ event generators agree with the measurements in pp collisions. When comparing the results from the most central PbPb collisions to pp data, a hint of an increase of jets with large jet mass is observed, which could originate from additional medium-induced radiation at a large angle from the jet axis. However, no modification of the groomed mass of the core of the jet is observed for all PbPb centrality classes. The PbPb results are also compared to predictions from the jewel and q-pythia event generators, which predict a large modification of the groomed mass not observed in the data.[Figure not available: see fulltext.]

Original language	English
Article number	161
Journal	Journal of High Energy Physics
Volume	2018
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2018)161
State	Published - 1 Oct 2018

Keywords

Hadron-Hadron scattering (experiments)
Jet physics
Quark Gluon Plasma
Relativistic heavy ion physics

Access to Document

10.1007/JHEP10(2018)161

Cite this

@article{1f0365b739b14ed5a455caab7074a31c,

title = "Measurement of the groomed jet mass in PbPb and pp collisions at √sNN=5.02 TeV",

abstract = "A measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially removes soft constituents of a jet until a pair of hard subjets is found. The resulting groomed jets can be used to study modifications to the parton shower evolution in the presence of the hot and dense medium created in heavy ion collisions. Predictions of groomed jet properties from the pythia and herwig++ event generators agree with the measurements in pp collisions. When comparing the results from the most central PbPb collisions to pp data, a hint of an increase of jets with large jet mass is observed, which could originate from additional medium-induced radiation at a large angle from the jet axis. However, no modification of the groomed mass of the core of the jet is observed for all PbPb centrality classes. The PbPb results are also compared to predictions from the jewel and q-pythia event generators, which predict a large modification of the groomed mass not observed in the data.[Figure not available: see fulltext.]",

keywords = "Hadron-Hadron scattering (experiments), Jet physics, Quark Gluon Plasma, Relativistic heavy ion physics",

author = "\{The CMS collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and \{Escalante Del Valle\}, A. and M. Flechl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and J. Hrubec and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and A. Taurok and W. Waltenberger and J. Wittmann and Wulz, \{C. E.\} and M. Zarucki and V. Chekhovsky and V. Mossolov and \{Suarez Gonzalez\}, J. and \{De Wolf\}, \{E. A.\} and \{Di Croce\}, D. and X. Janssen and J. Lauwers and M. Pieters and \{Van De Klundert\}, M. and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Van Remortel\}, N. and \{Abu Zeid\}, S. and F. Blekman and J. D{\textquoteright}Hondt and \{De Bruyn\}, I. and \{De Clercq\}, J. and K. Deroover and \{Carrera Jarrin\}, E.",

note = "Publisher Copyright: {\textcopyright} 2018, The Author(s).",

year = "2018",

month = oct,

day = "1",

doi = "10.1007/JHEP10(2018)161",

language = "Ingl{\'e}s",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "10",

}

TY - JOUR

T1 - Measurement of the groomed jet mass in PbPb and pp collisions at √sNN=5.02 TeV

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Taurok, A.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lauwers, J.

AU - Pieters, M.

AU - Van De Klundert, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Abu Zeid, S.

AU - Blekman, F.

AU - D’Hondt, J.

AU - De Bruyn, I.

AU - De Clercq, J.

AU - Deroover, K.

AU - Carrera Jarrin, E.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - A measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially removes soft constituents of a jet until a pair of hard subjets is found. The resulting groomed jets can be used to study modifications to the parton shower evolution in the presence of the hot and dense medium created in heavy ion collisions. Predictions of groomed jet properties from the pythia and herwig++ event generators agree with the measurements in pp collisions. When comparing the results from the most central PbPb collisions to pp data, a hint of an increase of jets with large jet mass is observed, which could originate from additional medium-induced radiation at a large angle from the jet axis. However, no modification of the groomed mass of the core of the jet is observed for all PbPb centrality classes. The PbPb results are also compared to predictions from the jewel and q-pythia event generators, which predict a large modification of the groomed mass not observed in the data.[Figure not available: see fulltext.]

AB - A measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially removes soft constituents of a jet until a pair of hard subjets is found. The resulting groomed jets can be used to study modifications to the parton shower evolution in the presence of the hot and dense medium created in heavy ion collisions. Predictions of groomed jet properties from the pythia and herwig++ event generators agree with the measurements in pp collisions. When comparing the results from the most central PbPb collisions to pp data, a hint of an increase of jets with large jet mass is observed, which could originate from additional medium-induced radiation at a large angle from the jet axis. However, no modification of the groomed mass of the core of the jet is observed for all PbPb centrality classes. The PbPb results are also compared to predictions from the jewel and q-pythia event generators, which predict a large modification of the groomed mass not observed in the data.[Figure not available: see fulltext.]

KW - Hadron-Hadron scattering (experiments)

KW - Jet physics

KW - Quark Gluon Plasma

KW - Relativistic heavy ion physics

UR - https://www.scopus.com/pages/publications/85056121335

U2 - 10.1007/JHEP10(2018)161

DO - 10.1007/JHEP10(2018)161

M3 - Artículo

AN - SCOPUS:85056121335

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 161

ER -

Measurement of the groomed jet mass in PbPb and pp collisions at √sNN=5.02 TeV

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this