Multiplicity dependence of prompt and non-prompt J/ψ production at midrapidity in pp collisions at TeV

The ALICE collaboration

doi:10.1007/JHEP07(2026)051

Multiplicity dependence of prompt and non-prompt J/ψ production at midrapidity in pp collisions at TeV

The ALICE collaboration

Chair of Experimentalphysik - Dense and Strange Hadronic Matter

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

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

Abstract

The yields of prompt and non-prompt J/ψ and the fraction of non-prompt J/ψ are measured at midrapidity (|y| < 0.9) via the dielectron decay channel as a function of the midrapidity charged-particle multiplicity (|η| < 0.9) in pp collisions at TeV. The J/ψ yields and the multiplicity are normalized by their average value in inelastic collisions. The multiplicity-dependent yield ratio between prompt J/ψ and D⁰ is reported. The multiplicity is further divided into three azimuthal regions with respect to the J/ψ momentum: toward the J/ψ emission direction, transverse, or opposite to it. A stronger-than-linear increase of the self-normalized yields is observed for both prompt and non-prompt J/ψ production, with similar trends. This behaviour is also observed in the toward region, while a weaker increase is observed in the transverse and away regions.

Original language	English
Article number	51
Journal	Journal of High Energy Physics
Volume	2026
Issue number	7
DOIs	https://doi.org/10.1007/JHEP07(2026)051
State	Published - Jul 2026

Keywords

Hadron-Hadron Scattering
Proton-Proton Scattering
Quarkonium

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10.1007/JHEP07(2026)051

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@article{5009b4e94cd34c4ea1ad72754b296e1b,

title = "Multiplicity dependence of prompt and non-prompt J/ψ production at midrapidity in pp collisions at TeV",

abstract = "The yields of prompt and non-prompt J/ψ and the fraction of non-prompt J/ψ are measured at midrapidity (|y| < 0.9) via the dielectron decay channel as a function of the midrapidity charged-particle multiplicity (|η| < 0.9) in pp collisions at TeV. The J/ψ yields and the multiplicity are normalized by their average value in inelastic collisions. The multiplicity-dependent yield ratio between prompt J/ψ and D0 is reported. The multiplicity is further divided into three azimuthal regions with respect to the J/ψ momentum: toward the J/ψ emission direction, transverse, or opposite to it. A stronger-than-linear increase of the self-normalized yields is observed for both prompt and non-prompt J/ψ production, with similar trends. This behaviour is also observed in the toward region, while a weaker increase is observed in the transverse and away regions.",

keywords = "Hadron-Hadron Scattering, Proton-Proton Scattering, Quarkonium",

author = "\{The ALICE collaboration\} and Abdallah, \{D. A.H.\} and Abualrob, \{I. J.\} and S. Acharya and K. Agarwal and \{Aglieri Rinella\}, G. and L. Aglietta and N. Agrawal and Z. Ahammed and S. Ahmad and I. Ahuja and Z. Akbar and V. Akishina and M. Al-Turany and B. Alessandro and Alfarasyi, \{A. R.\} and \{Alfaro Molina\}, R. and B. Ali and A. Alici and J. Alme and G. Alocco and T. Alt and I. Altsybeev and C. Andrei and N. Andreou and A. Andronic and M. Angeletti and V. Anguelov and F. Antinori and P. Antonioli and N. Apadula and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and H. Baba and Babu, \{A. R.J.\} and A. Badal{\`a} and J. Bae and Y. Bae and Baek, \{Y. W.\} and X. Bai and R. Bailhache and Y. Bailung and R. Bala and A. Baldisseri and L. Fabbietti",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2026.",

year = "2026",

month = jul,

doi = "10.1007/JHEP07(2026)051",

language = "English",

volume = "2026",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "7",

}

TY - JOUR

T1 - Multiplicity dependence of prompt and non-prompt J/ψ production at midrapidity in pp collisions at TeV

AU - The ALICE collaboration

AU - Abdallah, D. A.H.

AU - Abualrob, I. J.

AU - Acharya, S.

AU - Agarwal, K.

AU - Aglieri Rinella, G.

AU - Aglietta, L.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahuja, I.

AU - Akbar, Z.

AU - Akishina, V.

AU - Al-Turany, M.

AU - Alessandro, B.

AU - Alfarasyi, A. R.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Alici, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altsybeev, I.

AU - Andrei, C.

AU - Andreou, N.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Baba, H.

AU - Babu, A. R.J.

AU - Badalà, A.

AU - Bae, J.

AU - Bae, Y.

AU - Baek, Y. W.

AU - Bai, X.

AU - Bailhache, R.

AU - Bailung, Y.

AU - Bala, R.

AU - Baldisseri, A.

AU - Fabbietti, L.

PY - 2026/7

Y1 - 2026/7

N2 - The yields of prompt and non-prompt J/ψ and the fraction of non-prompt J/ψ are measured at midrapidity (|y| < 0.9) via the dielectron decay channel as a function of the midrapidity charged-particle multiplicity (|η| < 0.9) in pp collisions at TeV. The J/ψ yields and the multiplicity are normalized by their average value in inelastic collisions. The multiplicity-dependent yield ratio between prompt J/ψ and D0 is reported. The multiplicity is further divided into three azimuthal regions with respect to the J/ψ momentum: toward the J/ψ emission direction, transverse, or opposite to it. A stronger-than-linear increase of the self-normalized yields is observed for both prompt and non-prompt J/ψ production, with similar trends. This behaviour is also observed in the toward region, while a weaker increase is observed in the transverse and away regions.

AB - The yields of prompt and non-prompt J/ψ and the fraction of non-prompt J/ψ are measured at midrapidity (|y| < 0.9) via the dielectron decay channel as a function of the midrapidity charged-particle multiplicity (|η| < 0.9) in pp collisions at TeV. The J/ψ yields and the multiplicity are normalized by their average value in inelastic collisions. The multiplicity-dependent yield ratio between prompt J/ψ and D0 is reported. The multiplicity is further divided into three azimuthal regions with respect to the J/ψ momentum: toward the J/ψ emission direction, transverse, or opposite to it. A stronger-than-linear increase of the self-normalized yields is observed for both prompt and non-prompt J/ψ production, with similar trends. This behaviour is also observed in the toward region, while a weaker increase is observed in the transverse and away regions.

KW - Hadron-Hadron Scattering

KW - Proton-Proton Scattering

KW - Quarkonium

UR - https://www.scopus.com/pages/publications/105044635495

U2 - 10.1007/JHEP07(2026)051

DO - 10.1007/JHEP07(2026)051

M3 - Article

AN - SCOPUS:105044635495

SN - 1126-6708

VL - 2026

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 7

M1 - 51

ER -

Multiplicity dependence of prompt and non-prompt J/ψ production at midrapidity in pp collisions at TeV

Abstract

Keywords

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