Jet fragmentation transverse momentum measurements from di-hadron correlations in √s=7 TeV pp and √sNN=5.02 TeV p–Pb collisions

The ALICE collaboration

doi:10.1007/JHEP03(2019)169

Jet fragmentation transverse momentum measurements from di-hadron correlations in √s=7 TeV pp and √sNN=5.02 TeV p–Pb collisions

The ALICE collaboration

Chair of Experimentalphysik - Dense and Strange Hadronic Matter

European Organization for Nuclear Research
VECC Kolkata
University of California at Berkeley
Nuclear Physics Institute of the Cas
Johann Wolfgang Goethe University
Lund University
Panjab University
Politecnico di Torino
Aligarh Muslim University
Korea Institute of Science and Technology Information
Yale University
ITEP
GSI Helmholtz Center
University of Campinas
National Research Centre "Kurchatov Institute"
INFN Sez. di Torino
Central China Normal University
Universidad Nacional Autónoma de México
COMSATS University Islamabad
Centro Fermi
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
Bogolyubov Institute for Theoretical Physics Nasu
University of Bergen
University of St. Petersburg
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Birmingham
University of Münster
Heidelberg University
Creighton University
Rudjer Boskovic Institute
Dipartimento di Fisica 'G. Galilei' and INFN
University of Houston
Lawrence Berkeley National Laboratory
l'institut du thorax
University of Oslo
Cluster of Excellence E-conversion
Laboratori Nazionali Del Sud
Gangneung-Wonju National University
Inha University
University of Jammu
Université Paris-Saclay Centre d’ Études de Saclay (CEA)
University of Bonn
Homi Bhabha National Institute
Hungarian Academy of Sciences
STFC Daresbury Laboratory
Institut de Neurosciences de la Timone, Centre National de la Recherche Scientifique - Aix-Marseille University
Wayne State University
Joint Inst. for Nuclear Research
The Indian Institute of Technology Bombay
Pontifical Catholic University of Peru San Miguel
Niels Bohr Institutet
the University of Utrecht
Institut Pluridisciplinaire Hubert Curien
Benemerita Universidad Autonoma de Puebla
Universidad Autonoma de Sinaloa
National Research Nuclear University MEPhI
Petersburg Nuclear Phys. Inst.
University of Tennessee
Gauhati University
INFN, Laboratori Nazionali Di Frascati
Czech Technical University in Prague
Technical University of Munich
Bose Institute
University of Texas at Austin
University of Pavia
P. J. Safarik University
University of Brescia
University of Liverpool
University of São Paulo
University of Helsinki and Helsinki Institute of Physics
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Russian Federal Nuclear Center (VNIIEF)
Stefan Meyer Institut für Subatomare Physik (SMI)
Tsukuba University
National Research Foundation
Ohio State University
Technical University of Košice
Science Park 105
INFN- Sezione di Trieste
Sezione INFN di Cagliari
University of Jyväskylä
Université Claude Bernard Lyon 1
University of Cape Town
University of Grenoble Alpes
CNRS/IN2P3 and Université Paris 11
Department of Physics
Oak Ridge National Laboratory
University of Eastern Piedmont
UFABC
Instituto de Ciencias Nucleares de la UNAM
Warsaw Institute of Technology
Institute of Space Sciences
Indian Institute of Technology Indore
Sezione INFN di Roma La Sapienza
Frankfurt Institute for Advanced Studies
National Center for Nuclear Research (NCBJ)
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Zagreb
Pusan National University
Institute for High Energy Physics (IHEP)
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Institute for Nuclear Research of the Russian Academy of Sciences
University of Athens
Chicago State University
UFRGS
University of Split
A.I. Alikhanyan National Science Laboratory (YerPhi)
University of Tokyo
Nagasaki Institute of Applied Science
Western Norway University of Applied Sciences
CINVESTAV
Sejong University
Institute of Experimental Physics Slovak Academy of Sciences
Yonsei University
KTO Karatay University
Zentrum für Technologietransfer und Telekommunikation (ZTT)
Chonbuk National University
California Polytechnic State University, San Luis Obispo
Suranaree University of Technology
University of South-Eastern Norway
China Institute of Atomic Energy
Moscow State University
Institute of Physics of the Czech Academy of Sciences
University of Foggia
Dipartimento di Fisica
Comenius University
Budker Institute of Nuclear Physics (SB RAS)
University of Rajasthan
Wrocław University
National Nuclear Research Center
University of Tübingen
Hiroshima University
Nara Women's University
Shanghai Institute of Applied Physics, Chinese Academy of Sciences
Indonesian Institute of Sciences
University of the Witwatersrand, Johannesburg
University of Science and Technology of China

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10 Scopus citations

Abstract

The transverse structure of jets was studied via jet fragmentation transverse momentum (j_T) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at the LHC. The highest transverse momentum particle in each event is used as the trigger particle and the region 3 < p_Tt < 15GeV/c is explored in this study. The measured distributions show a clear narrow Gaussian component and a wide non-Gaussian one. Based on Pythia simulations, the narrow component can be related to non-perturbative hadronization and the wide component to quantum chromodynamical splitting. The width of the narrow component shows a weak dependence on the transverse momentum of the trigger particle, in agreement with the expectation of universality of the hadronization process. On the other hand, the width of the wide component shows a rising trend suggesting increased branching for higher transverse momentum. The results obtained in pp collisions at s=7 TeV and in p–Pb collisions at sNN=5.02 TeV are compatible within uncertainties and hence no significant cold nuclear matter effects are observed. The results are compared to previous measurements from CCOR and PHENIX as well as to Pythia 8 and Herwig 7 simulations.[Figure not available: see fulltext.].

Original language	English
Article number	169
Journal	Journal of High Energy Physics
Volume	2019
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2019)169
State	Published - 1 Mar 2019

Keywords

Hadron-Hadron scattering (experiments)

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10.1007/JHEP03(2019)169

Cite this

@article{47d16f73736f4e42a2da8278d2d7f85e,

title = "Jet fragmentation transverse momentum measurements from di-hadron correlations in √s=7 TeV pp and √sNN=5.02 TeV p–Pb collisions",

abstract = "The transverse structure of jets was studied via jet fragmentation transverse momentum (jT) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at the LHC. The highest transverse momentum particle in each event is used as the trigger particle and the region 3 < pTt < 15GeV/c is explored in this study. The measured distributions show a clear narrow Gaussian component and a wide non-Gaussian one. Based on Pythia simulations, the narrow component can be related to non-perturbative hadronization and the wide component to quantum chromodynamical splitting. The width of the narrow component shows a weak dependence on the transverse momentum of the trigger particle, in agreement with the expectation of universality of the hadronization process. On the other hand, the width of the wide component shows a rising trend suggesting increased branching for higher transverse momentum. The results obtained in pp collisions at s=7 TeV and in p–Pb collisions at sNN=5.02 TeV are compatible within uncertainties and hence no significant cold nuclear matter effects are observed. The results are compared to previous measurements from CCOR and PHENIX as well as to Pythia 8 and Herwig 7 simulations.[Figure not available: see fulltext.].",

keywords = "Hadron-Hadron scattering (experiments)",

author = "\{The ALICE collaboration\} and S. Acharya and Acosta, \{F. T.\} and D. Adamov{\'a} and Adhya, \{S. P.\} and A. Adler and J. Adolfsson and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} and Albuquerque, \{D. S.D.\} and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and Anaam, \{M. N.\} and C. Andrei and D. Andreou and Andrews, \{H. A.\} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and R. Anwar and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and M. Arratia and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and L. Fabbietti",

note = "Publisher Copyright: {\textcopyright} 2019, The Author(s).",

year = "2019",

month = mar,

day = "1",

doi = "10.1007/JHEP03(2019)169",

language = "English",

volume = "2019",

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issn = "1126-6708",

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T1 - Jet fragmentation transverse momentum measurements from di-hadron correlations in √s=7 TeV pp and √sNN=5.02 TeV p–Pb collisions

AU - The ALICE collaboration

AU - Acharya, S.

AU - Acosta, F. T.

AU - Adamová, D.

AU - Adhya, S. P.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arratia, M.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Fabbietti, L.

PY - 2019/3/1

Y1 - 2019/3/1

N2 - The transverse structure of jets was studied via jet fragmentation transverse momentum (jT) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at the LHC. The highest transverse momentum particle in each event is used as the trigger particle and the region 3 < pTt < 15GeV/c is explored in this study. The measured distributions show a clear narrow Gaussian component and a wide non-Gaussian one. Based on Pythia simulations, the narrow component can be related to non-perturbative hadronization and the wide component to quantum chromodynamical splitting. The width of the narrow component shows a weak dependence on the transverse momentum of the trigger particle, in agreement with the expectation of universality of the hadronization process. On the other hand, the width of the wide component shows a rising trend suggesting increased branching for higher transverse momentum. The results obtained in pp collisions at s=7 TeV and in p–Pb collisions at sNN=5.02 TeV are compatible within uncertainties and hence no significant cold nuclear matter effects are observed. The results are compared to previous measurements from CCOR and PHENIX as well as to Pythia 8 and Herwig 7 simulations.[Figure not available: see fulltext.].

AB - The transverse structure of jets was studied via jet fragmentation transverse momentum (jT) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at the LHC. The highest transverse momentum particle in each event is used as the trigger particle and the region 3 < pTt < 15GeV/c is explored in this study. The measured distributions show a clear narrow Gaussian component and a wide non-Gaussian one. Based on Pythia simulations, the narrow component can be related to non-perturbative hadronization and the wide component to quantum chromodynamical splitting. The width of the narrow component shows a weak dependence on the transverse momentum of the trigger particle, in agreement with the expectation of universality of the hadronization process. On the other hand, the width of the wide component shows a rising trend suggesting increased branching for higher transverse momentum. The results obtained in pp collisions at s=7 TeV and in p–Pb collisions at sNN=5.02 TeV are compatible within uncertainties and hence no significant cold nuclear matter effects are observed. The results are compared to previous measurements from CCOR and PHENIX as well as to Pythia 8 and Herwig 7 simulations.[Figure not available: see fulltext.].

KW - Hadron-Hadron scattering (experiments)

UR - https://www.scopus.com/pages/publications/85063688537

U2 - 10.1007/JHEP03(2019)169

DO - 10.1007/JHEP03(2019)169

M3 - Article

AN - SCOPUS:85063688537

SN - 1126-6708

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 3

M1 - 169

ER -

Jet fragmentation transverse momentum measurements from di-hadron correlations in √s=7 TeV pp and √sNN=5.02 TeV p–Pb collisions

Abstract

Keywords

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