Search for jet quenching effects in high-multiplicity pp collisions at (Formula presented.) TeV via di-jet acoplanarity

The ALICE collaboration

doi:10.1007/JHEP05(2024)229

Search for jet quenching effects in high-multiplicity pp collisions at (Formula presented.) TeV via di-jet acoplanarity

The ALICE collaboration

Chair of Experimentalphysik - Dense and Strange Hadronic Matter

European Organization for Nuclear Research
LAIC, Université d'Auvergne
Nuclear Physics Institute of the Cas
INFN Sez. di Torino
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
VECC Kolkata
Aligarh Muslim University
Korea Institute of Science and Technology Information
P. J. Safarik University
GSI Helmholtz Center
Central China Normal University
Universidad Nacional Autónoma de México
University of Houston
University of Bergen
Sezione INFN di Cagliari
Johann Wolfgang Goethe University
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Technical University of Munich
Benemerita Universidad Autonoma de Puebla
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Derby
University of Münster
Heidelberg University
Dipartimento di Fisica 'G. Galilei' and INFN
Lawrence Berkeley National Laboratory
l'institut du thorax
University of Grenoble Alpes
University of São Paulo
University of Oslo
Yale University
University of Tokyo
Laboratori Nazionali Del Sud
Sungkyunkwan University
Gangneung-Wonju National University
University of Science and Technology of China
Indian Institute of Technology Indore
University Paris-Sud
Univ of Mining and Metallurgy
Bose Institute
University of Jammu
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
University of Athens
Gauhati University
Wigner Research Centre for Physics
STFC Daresbury Laboratory
University of Liverpool
Lund University
The Indian Institute of Technology Bombay
Pontifical Catholic University of Peru San Miguel
Niels Bohr Institutet
Institut Pluridisciplinaire Hubert Curien
Institute of Space Sciences
INFN, Laboratori Nazionali Di Frascati
Czech Technical University in Prague
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
University of Texas at Austin
Frankfurt Institute for Advanced Studies
University of Pavia
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
Oak Ridge National Laboratory
Inha University
University of Brescia
Politecnico di Bari
INFN- Sezione di Trieste
Stefan Meyer Institut für Subatomare Physik (SMI)
National Research Foundation
University of the Witwatersrand, Johannesburg
Sezione INFN di Roma La Sapienza
Universidad Autonoma de Sinaloa
University Politehnica of Bucharest
University of Lyon
Homi Bhabha National Institute
University of Campinas
Max-Planck-Institut für Physik
Science Park 105
Tsukuba University
Energy and Sustainable Economic Development (ENEA)
University of Birmingham
University of Eastern Piedmont
UFABC
University of California at Berkeley
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Cape Town
Warsaw Institute of Technology
Panjab University
Technical University of Košice
Comenius University
Hiroshima University
Politecnico di Torino
Saga University
Chicago State University
University of Kansas
UFRGS
University of Tennessee
Nagasaki Institute of Applied Science
Wayne State University
University of Split
the University of Utrecht
A.I. Alikhanyan National Science Laboratory (YerPhi)
Yonsei University
University of Jyväskylä
University of Bonn
Western Norway University of Applied Sciences
CINVESTAV
Ohio State University
COMSATS University Islamabad
BRIN
Pusan National University
China Institute of Atomic Energy
Instituto de Ciencias Nucleares de la UNAM
Suranaree University of Technology
Institute of Experimental Physics Slovak Academy of Sciences
KTO Karatay University
Yildiz Technical University
University of Zagreb
Zentrum für Technologie und Transfer (ZTT)
Chonbuk National University
Sejong University
California Polytechnic State University, San Luis Obispo
Sofia University
National Center for Nuclear Research (NCBJ)
University of South-Eastern Norway
Fudan University
Multimedia and Distributed Systems Laboratory
University of Foggia
University of Helsinki and Helsinki Institute of Physics
Chungbuk National University
China University of Geosciences
Creighton University
Wrocław University
National Nuclear Research Center
University of Tübingen
Nara Women's University
Bogolyubov Institute for Theoretical Physics Nasu
Institute of Physics of the Czech Academy of Sciences

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

18 Scopus citations

Abstract

The ALICE Collaboration reports a search for jet quenching effects in high-multiplicity (HM) proton-proton collisions at s = 13 TeV, using the semi-inclusive azimuthal-difference distribution ∆φ of charged-particle jets recoiling from a high transverse momentum (high-p_T,trig) trigger hadron. Jet quenching may broaden the ∆φ distribution measured in HM events compared to that in minimum bias (MB) events. The measurement employs a p_T,trig-differential observable for data-driven suppression of the contribution of multiple partonic interactions, which is the dominant background. While azimuthal broadening is indeed observed in HM compared to MB events, similar broadening for HM events is observed for simulations based on the PYTHIA 8 Monte Carlo generator, which does not incorporate jet quenching. Detailed analysis of these data and simulations show that the azimuthal broadening is due to bias of the HM selection towards events with multiple jets in the final state. The identification of this bias has implications for all jet quenching searches where selection is made on the event activity.

Original language	English
Article number	229
Journal	Journal of High Energy Physics
Volume	2024
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2024)229
State	Published - May 2024

Keywords

Hadron-Hadron Scattering
Jets
Quark Gluon Plasma

Access to Document

10.1007/JHEP05(2024)229

Cite this

@article{ec80117834f84533827c0ba5652597d0,

title = "Search for jet quenching effects in high-multiplicity pp collisions at (Formula presented.) TeV via di-jet acoplanarity",

abstract = "The ALICE Collaboration reports a search for jet quenching effects in high-multiplicity (HM) proton-proton collisions at s = 13 TeV, using the semi-inclusive azimuthal-difference distribution ∆φ of charged-particle jets recoiling from a high transverse momentum (high-pT,trig) trigger hadron. Jet quenching may broaden the ∆φ distribution measured in HM events compared to that in minimum bias (MB) events. The measurement employs a pT,trig-differential observable for data-driven suppression of the contribution of multiple partonic interactions, which is the dominant background. While azimuthal broadening is indeed observed in HM compared to MB events, similar broadening for HM events is observed for simulations based on the PYTHIA 8 Monte Carlo generator, which does not incorporate jet quenching. Detailed analysis of these data and simulations show that the azimuthal broadening is due to bias of the HM selection towards events with multiple jets in the final state. The identification of this bias has implications for all jet quenching searches where selection is made on the event activity.",

keywords = "Hadron-Hadron Scattering, Jets, Quark Gluon Plasma",

author = "\{The 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 Baek, \{Y. W.\} and L. Fabbietti",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = may,

doi = "10.1007/JHEP05(2024)229",

language = "English",

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "5",

}

TY - JOUR

T1 - Search for jet quenching effects in high-multiplicity pp collisions at (Formula presented.) TeV via di-jet acoplanarity

AU - The 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 - Baek, Y. W.

AU - Fabbietti, L.

PY - 2024/5

Y1 - 2024/5

N2 - The ALICE Collaboration reports a search for jet quenching effects in high-multiplicity (HM) proton-proton collisions at s = 13 TeV, using the semi-inclusive azimuthal-difference distribution ∆φ of charged-particle jets recoiling from a high transverse momentum (high-pT,trig) trigger hadron. Jet quenching may broaden the ∆φ distribution measured in HM events compared to that in minimum bias (MB) events. The measurement employs a pT,trig-differential observable for data-driven suppression of the contribution of multiple partonic interactions, which is the dominant background. While azimuthal broadening is indeed observed in HM compared to MB events, similar broadening for HM events is observed for simulations based on the PYTHIA 8 Monte Carlo generator, which does not incorporate jet quenching. Detailed analysis of these data and simulations show that the azimuthal broadening is due to bias of the HM selection towards events with multiple jets in the final state. The identification of this bias has implications for all jet quenching searches where selection is made on the event activity.

AB - The ALICE Collaboration reports a search for jet quenching effects in high-multiplicity (HM) proton-proton collisions at s = 13 TeV, using the semi-inclusive azimuthal-difference distribution ∆φ of charged-particle jets recoiling from a high transverse momentum (high-pT,trig) trigger hadron. Jet quenching may broaden the ∆φ distribution measured in HM events compared to that in minimum bias (MB) events. The measurement employs a pT,trig-differential observable for data-driven suppression of the contribution of multiple partonic interactions, which is the dominant background. While azimuthal broadening is indeed observed in HM compared to MB events, similar broadening for HM events is observed for simulations based on the PYTHIA 8 Monte Carlo generator, which does not incorporate jet quenching. Detailed analysis of these data and simulations show that the azimuthal broadening is due to bias of the HM selection towards events with multiple jets in the final state. The identification of this bias has implications for all jet quenching searches where selection is made on the event activity.

KW - Hadron-Hadron Scattering

KW - Jets

KW - Quark Gluon Plasma

UR - https://www.scopus.com/pages/publications/85203806494

U2 - 10.1007/JHEP05(2024)229

DO - 10.1007/JHEP05(2024)229

M3 - Article

AN - SCOPUS:85203806494

SN - 1126-6708

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

M1 - 229

ER -

Search for jet quenching effects in high-multiplicity pp collisions at (Formula presented.) TeV via di-jet acoplanarity

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this