Measurements of ψ(2S) and χc1(3872) production within fully reconstructed jets

LHCb Collaboration

doi:10.1140/epjc/s10052-025-13852-4

Measurements of ψ(2S) and χc1(3872) production within fully reconstructed jets

LHCb Collaboration

CERN
Swiss Federal Institute of Technology Lausanne
National Institute for Nuclear Physics
University of Padua
CAS - Institute of High Energy Physics
University of Chinese Academy of Sciences
University of Valencia
RWTH Aachen University
Central China Normal University
Tsinghua University
University of Warwick
Peking University
Heidelberg University
University of Oxford
Hunan University
University of Bologna
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Max Planck Institute for Nuclear Physics
University of Manchester
Université Paris-Saclay
University of Maryland, College Park
University of Genoa
Imperial College London
Consejo Nacional de Rectores (CONARE)
South China Normal University
Syracuse University
University of Cambridge
National Centre for Nuclear Research
Rutherford Appleton Laboratory
University of Bristol
University of Edinburgh
Massachusetts Institute of Technology
University of Cincinnati
TU Dortmund University
University of Birmingham
University of Glasgow
University of A Coruna
Monash University
Wuhan University
Université Savoie Mont Blanc
Maastricht University
CPPM
Sorbonne Université
University of Liverpool
Ramon Llull University
University of Barcelona
University of Urbino
Instituto Galego de Física de Altas Enerxías (IGFAE)
University of Zurich
National Institute for Subatomic Physics
University of Alcalá
Los Alamos National Laboratory
Vrije Universiteit Amsterdam
AGH University of Krakow
Centro Brasileiro de Pesquisas Físicas
University of Milan
University of Ferrara
Université Clermont Auvergne
University of Siena
Universidade Federal do Rio de Janeiro
University of Bari
University of Michigan, Ann Arbor
University of Bonn
University of Basilicata
University of Groningen
University of Milan - Bicocca
University of Cagliari
Eötvös Loránd University
Laboratoire Leprince-Ringuet
Uppsala University
Universidad Nacional de Colombia
Scuola Normale Superiore di Pisa
University of Bergamo
Pontifícia Universidade Católica do Rio de Janeiro
University of Pisa
NASU - Institute of Nuclear Research
Horia Hulubei National Institute of Physics and Nuclear Engineering
Ruhr University Bochum
University College Dublin
University of Perugia
Lanzhou University
Henan University
Cracow University of Technology
NASU - Kharkov Institute of Physics and Technology
Universidade de Brasília
Lamarr Institute for Machine Learning and Artificial Intelligence
Centro Federal de Educação Tecnológica Celso Suckow da Fonseca
National Autonomous University of Honduras
Facultad de Ciencias Fisicas
University of Rome Tor Vergata

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2 Citas (Scopus)

Resumen

This paper presents the first measurement of ψ(2S) and χc1(3872) meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the J/ψ(→μ+μ-)π+π- final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of 13TeV in 2016, corresponding to an integrated luminosity of 1.64\,fb-1. The fragmentation function, presented as the ratio of the quarkonium-tag transverse momentum to the full jet transverse momentum (pT(tag)/pT(jet)), is measured differentially in pT(jet) and pT(tag) bins. The distributions are separated into promptly produced quarkonia from proton-proton collisions and quarkonia produced from displaced b-hadron decays. While the displaced quarkonia fragmentation functions are in general well described by parton-shower predictions, the prompt quarkonium distributions differ significantly from fixed-order non-relativistic QCD (NRQCD) predictions followed by a QCD parton shower.

Idioma original	Inglés
Número de artículo	562
Publicación	European Physical Journal C
Volumen	85
N.º	5
DOI	https://doi.org/10.1140/epjc/s10052-025-13852-4
Estado	Publicada - may 2025
Publicado de forma externa	Sí

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@article{baf77949015c4bb8a90c063d29142ce2,

title = "Measurements of ψ(2S) and χc1(3872) production within fully reconstructed jets",

abstract = "This paper presents the first measurement of ψ(2S) and χc1(3872) meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the J/ψ(→μ+μ-)π+π- final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of 13TeV in 2016, corresponding to an integrated luminosity of 1.64\textbackslash{},fb-1. The fragmentation function, presented as the ratio of the quarkonium-tag transverse momentum to the full jet transverse momentum (pT(tag)/pT(jet)), is measured differentially in pT(jet) and pT(tag) bins. The distributions are separated into promptly produced quarkonia from proton-proton collisions and quarkonia produced from displaced b-hadron decays. While the displaced quarkonia fragmentation functions are in general well described by parton-shower predictions, the prompt quarkonium distributions differ significantly from fixed-order non-relativistic QCD (NRQCD) predictions followed by a QCD parton shower.",

author = "\{LHCb Collaboration\} and G. Zunica and D. Zuliani and Q. Zou and J. Zhuo and V. Zhukov and X. Zhu and X. Zhu and Zhu, \{L. Z.\} and V. Zhovkovska and Y. Zhou and X. Zhou and T. Zhou and Y. Zheng and Zheng, \{X. Z.\} and Zheng, \{S. Z.\} and A. Zhelezov and A. Zharkova and Y. Zhao and Zhang, \{Y. Z.\} and Y. Zhang and S. Zhang and S. Zhang and L. Zhang and J. Zhang and D. Zhang and C. Zhang and M. Zeng and C. Zeng and F. Zenesini and M. Zdybal and M. Zavertyaev and E. Zaffaroni and Y. Yuan and X. Yuan and J. Yu and Yu, \{C. Y.\} and X. Yin and H. Yin and H. Yeung and V. Yeroshenko and Z. Yang and Z. Yang and Y. Yang and X. Yang and S. Yang and K. Yang and D. Yang and Z. Xu and \{Castro Godinez\}, J. and \{Calderon Ramirez\}, S.",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = may,

doi = "10.1140/epjc/s10052-025-13852-4",

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

volume = "85",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "5",

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TY - JOUR

T1 - Measurements of ψ(2S) and χc1(3872) production within fully reconstructed jets

AU - LHCb Collaboration

AU - Zunica, G.

AU - Zuliani, D.

AU - Zou, Q.

AU - Zhuo, J.

AU - Zhukov, V.

AU - Zhu, X.

AU - Zhu, L. Z.

AU - Zhovkovska, V.

AU - Zhou, Y.

AU - Zhou, X.

AU - Zhou, T.

AU - Zheng, Y.

AU - Zheng, X. Z.

AU - Zheng, S. Z.

AU - Zhelezov, A.

AU - Zharkova, A.

AU - Zhao, Y.

AU - Zhang, Y. Z.

AU - Zhang, Y.

AU - Zhang, S.

AU - Zhang, L.

AU - Zhang, J.

AU - Zhang, D.

AU - Zhang, C.

AU - Zeng, M.

AU - Zeng, C.

AU - Zenesini, F.

AU - Zdybal, M.

AU - Zavertyaev, M.

AU - Zaffaroni, E.

AU - Yuan, Y.

AU - Yuan, X.

AU - Yu, J.

AU - Yu, C. Y.

AU - Yin, X.

AU - Yin, H.

AU - Yeung, H.

AU - Yeroshenko, V.

AU - Yang, Z.

AU - Yang, Y.

AU - Yang, X.

AU - Yang, S.

AU - Yang, K.

AU - Yang, D.

AU - Xu, Z.

AU - Castro Godinez, J.

AU - Calderon Ramirez, S.

PY - 2025/5

Y1 - 2025/5

N2 - This paper presents the first measurement of ψ(2S) and χc1(3872) meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the J/ψ(→μ+μ-)π+π- final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of 13TeV in 2016, corresponding to an integrated luminosity of 1.64\,fb-1. The fragmentation function, presented as the ratio of the quarkonium-tag transverse momentum to the full jet transverse momentum (pT(tag)/pT(jet)), is measured differentially in pT(jet) and pT(tag) bins. The distributions are separated into promptly produced quarkonia from proton-proton collisions and quarkonia produced from displaced b-hadron decays. While the displaced quarkonia fragmentation functions are in general well described by parton-shower predictions, the prompt quarkonium distributions differ significantly from fixed-order non-relativistic QCD (NRQCD) predictions followed by a QCD parton shower.

AB - This paper presents the first measurement of ψ(2S) and χc1(3872) meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the J/ψ(→μ+μ-)π+π- final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of 13TeV in 2016, corresponding to an integrated luminosity of 1.64\,fb-1. The fragmentation function, presented as the ratio of the quarkonium-tag transverse momentum to the full jet transverse momentum (pT(tag)/pT(jet)), is measured differentially in pT(jet) and pT(tag) bins. The distributions are separated into promptly produced quarkonia from proton-proton collisions and quarkonia produced from displaced b-hadron decays. While the displaced quarkonia fragmentation functions are in general well described by parton-shower predictions, the prompt quarkonium distributions differ significantly from fixed-order non-relativistic QCD (NRQCD) predictions followed by a QCD parton shower.

UR - https://www.scopus.com/pages/publications/105012445764

U2 - 10.1140/epjc/s10052-025-13852-4

DO - 10.1140/epjc/s10052-025-13852-4

M3 - Artículo

AN - SCOPUS:105012445764

SN - 1434-6044

VL - 85

JO - European Physical Journal C

JF - European Physical Journal C

IS - 5

M1 - 562

ER -

Measurements of ψ(2S) and χc1(3872) production within fully reconstructed jets

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