Measurements of charmed meson and antimeson production asymmetries at $ \sqrt{\textrm{s}}=13.6 $ TeV

This article presents doubly differential measurements of the asymmetries in production rates between mesons containing a charm quark and those containing an anticharm quark in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13.6$ TeV using data recorded by the LHCb experiment. The asymmetries of $D^0$, $D^+$ and $D_s^+$ mesons are measured for two-dimensional intervals in transverse momentum and pseudorapidity, within the range $2.5<p_T<25.0$ GeV$/c$ and $2.0<η<4.5$. No significant production asymmetries are observed. Comparisons to the Pythia 8 and Herwig 7 event generators are also presented, and their agreement with the data is evaluated. These measurements constitute the first measurements of production asymmetries at this centre-of-mass energy of colliding beams, and the first measurements with the LHCb Run 3 detector.

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arXiv (Cornell University)
Published
2025-01-01
DOI
https://doi.org/10.18154/rwth-2026-03396
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Particle physics theoretical and experimental studies
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article
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article

Measurements of charmed meson and antimeson production asymmetries at $ \sqrt{\textrm{s}}=13.6 $ TeV

M. Martinelli, S. Sheng, H.-P. Dembinski, O. Leroy et al.
arXiv (Cornell University)
Particle physics theoretical and experimental studies
article

Measurements of charmed meson and antimeson production asymmetries at $ \sqrt{\textrm{s}}=13.6 $ TeV

M. Martinelli, S. Sheng, H.-P. Dembinski, O. Leroy, S. Jakobsen, J. Heuel, H. Tilquin, Marie Bachmayer, W. Barter, Emilio Xose Rodriguez Fernandez, G. Sarpis, S. Borghi, M. Guarise, Mark Smith, P. Ilten, G. Tonani, Emir Muhammad, Ö. Özçelik, A. Beck, D. Marangotto, V. Matiunin, M. Stefaniak, A. Grecu, C. Prouvé, W. Baldini, J. Hammerich, A. Inglessi, H. Schindler, M. Fontana, A. Okhotnikov, B. Passalacqua, J. Novoa Fernandez, M. Pló Casasús, R. Matev, A. Schopper, S. Ely, G. Mancinelli, F. Blanc, D. S. Mitzel, N. Polukhina, M. Charles, F. Ferreira Rodrigues, R. Quagliani, J. Baptista de Souza Leite, A. Konoplyannikov, L. Toscano, A. Mauri, Wenqian Huang, B. Dey, Kai Liu, S. J. Jaimes Elles, D. Nicotra, Z. Ajaltouni, W. Byczynski, P. Baladrón Rodríguez, H. Pereira Da Costa, Zakariya Aliouche, J. J. Back, Valery Zhukov, T. Miralles, F. Borgato, U. Egede, A. Pazos Álvarez, P. Billoir, M. Pappagallo, M. Pizzichemi, L. Martinazzoli, A. Biolchini, L. Congedo, C. Betancourt, L. Garrido, A. 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article en

Abstract

This article presents doubly differential measurements of the asymmetries in production rates between mesons containing a charm quark and those containing an anticharm quark in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13.6$ TeV using data recorded by the LHCb experiment. The asymmetries of $D^0$, $D^+$ and $D_s^+$ mesons are measured for two-dimensional intervals in transverse momentum and pseudorapidity, within the range $2.5<p_T<25.0$ GeV$/c$ and $2.0<η<4.5$. No significant production asymmetries are observed. Comparisons to the Pythia 8 and Herwig 7 event generators are also presented, and their agreement with the data is evaluated. These measurements constitute the first measurements of production asymmetries at this centre-of-mass energy of colliding beams, and the first measurements with the LHCb Run 3 detector.

arXiv (Cornell University)
Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Laboratoire d’Annecy de Physique des Particules (FR), Centre de physique des particules de Marseille (FR), Laboratoire de Physique Nucléaire et de Hautes Énergies (FR), CEA Paris-Saclay (FR), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR), Laboratoire Leprince-Ringuet (FR), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), RWTH Aachen University (DE)
National Science Foundation, U.S. Department of Energy, CERN, De La Salle University, UK Research and Innovation, Ministerul Cercetării, Inovării şi Digitalizării, Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei', Leverhulme Trust, European Commission, University of Bristol, University College Dublin, Deutsche Forschungsgemeinschaft, Universität Heidelberg, Agence Nationale de la Recherche, École Polytechnique Fédérale de Lausanne, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China, Vrije Universiteit Amsterdam, National Science Council, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Bundesministerium für Bildung und Forschung, Albert-Ludwigs-Universität Freiburg, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Generalitat Valenciana, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Max-Planck-Gesellschaft, Ministerstwo Edukacji i Nauki, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, National Academy of Sciences of Ukraine, Centre National de la Recherche Scientifique, Financiadora de Estudos e Projetos, Universitat de Barcelona, Université de Fribourg, Universität Zürich, Universitat Ramon Llull, Région Auvergne-Rhône-Alpes, Universidade de Santiago de Compostela, CAS Center for Excellence in Particle Physics, Max Planck Institute for Nuclear Physics, Australian Research Data Commons, Science and Technology Facilities Council, Deutsches Elektronen-Synchrotron, Agencia Estatal de Investigación, Institute of High Energy Physics, Fundamental Research Funds for the Central Universities, Institut National de Physique Nucléaire et de Physique des Particules, Institut de Ciències del Cosmos, Nuclear Physics
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Particle physics theoretical and experimental studies
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