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

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CERN
Wayne State University
University of Houston
National Institute for Nuclear Physics
Variable Energy Cyclotron Centre India
Aligarh Muslim University
Pavol Jozef Šafárik University
National Research and Innovation Agency Republic of Indonesia
Goethe University Frankfurt
GSI Helmholtz Centre for Heavy Ion Research
Suranaree University of Technology
Universidad Nacional Autónoma de México
University of Bergen
Technical University of Munich
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Derby
University of Münster
Heidelberg University
Lawrence Berkeley National Laboratory
University of Oslo
Yale University
The University of Tokyo
Sungkyunkwan University
University of Science and Technology of China
Institut de Physique des 2 Infinis de Lyon
University of Jammu
Université Paris-Saclay

Research output: Contribution to journal › 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 - 2026.07

Keywords

Hadron-Hadron Scattering
Proton-Proton Scattering
Quarkonium

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10.1007/JHEP07(2026)051

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@article{7757ed2999f340fd8ee8e795005e6a0f,

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 Kim, \{E. J.\}",

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 = "1029-8479",

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 - Kim, E. J.

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 - Journal article

AN - SCOPUS:105044635495

SN - 1029-8479

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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