Multiplicity dependence of f$$_{\textbf{0}}$$(980) production in pp collisions at $$\mathbf {\sqrt{s}}=$$ 13 TeV

Abstract The dependence of $$\textrm{f}_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> </mml:math> (980) production on the final-state charged-particle multiplicity is reported for proton–proton (pp) collisions at the centre-of-mass energy, $$\sqrt{s}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 13 TeV. The production of $$\textrm{f}_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> </mml:math> (980) is measured with the ALICE detector via the $$\textrm{f}_0 (980) \rightarrow \pi ^{+}\pi ^{-}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>980</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>-</mml:mo> </mml:msup> </mml:mrow> </mml:math> decay channel in a midrapidity region of $$|y|&lt;$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>|</mml:mo> <mml:mi>y</mml:mi> <mml:mo>|</mml:mo> <mml:mo>&lt;</mml:mo> </mml:mrow> </mml:math> 0.5. The evolution of the integrated yields and mean transverse momentum of f $$_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>0</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> (980) as a function of charged-particle multiplicity measured in pp at $$\sqrt{s}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 13 TeV follows the trends observed in pp at $$\sqrt{s}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 5.02 TeV and in proton–lead (p–Pb) collisions at $$\sqrt{s_{\textrm{NN}}}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mtext>NN</mml:mtext> </mml:msub> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 5.02 TeV. Particle yield ratios of $$\textrm{f}_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> </mml:math> (980) to $$\pi ^{\pm }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo> </mml:msup> </mml:math> and $$\textrm{K}^{*}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mtext>K</mml:mtext> <mml:mrow/> <mml:mrow> <mml:mrow/> <mml:mo>∗</mml:mo> </mml:mrow> </mml:mmultiscripts> </mml:math> (892) $$^{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>0</mml:mn> </mml:mmultiscripts> </mml:math> are found to decrease with increasing charged-particle multiplicity. These particle ratios are compared with calculations from the canonical statistical thermal model as a function of charged-particle multiplicity. The thermal model calculations provide a better description of the decreasing trend of particle ratios when no strange or antistrange quark composition for f $$_{0}$$ <mml:math xmlns:mml="http://www.w3.org

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The European Physical Journal C
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2026-01-26
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https://doi.org/10.1140/epjc/s10052-025-15205-7
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Particle physics theoretical and experimental studies
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article

Multiplicity dependence of f$$_{\textbf{0}}$$(980) production in pp collisions at $$\mathbf {\sqrt{s}}=$$ 13 TeV

F. Ronchetti, C. Lippmann, A. Manea, HyunJi Lim et al.
The European Physical Journal C
Particle physics theoretical and experimental studies
article

Multiplicity dependence of f$$_{\textbf{0}}$$(980) production in pp collisions at $$\mathbf {\sqrt{s}}=$$ 13 TeV

F. Ronchetti, C. Lippmann, A. Manea, HyunJi Lim, B. Zhang, A. Andronic, C. Terrevoli, K. Xiong, C. Sonnabend, J. Schukraft, Jean Faivre, A. Akindinov, R. Gupta, Subarna Thakur, Alexander Schroter, D. Mihai, Jong-Han Park, Kishor Goswami, D. Varga, C. H. A. Koster, A. Ferrero, M. Lamanna, Debaprasad Sahu, Toshihiro Gunji, C. A. Reetz, Debayan Sarkar, A. Masoni, Ján Jadlovský, S. Lambert, М. С. Селина, N. Apadula, B. Volkel, A. Bensaoula, Sabrina Pisano, S. Sawan, Shigeaki Kurita, J. Witte, C. Cicalo, C. Pinto, Anaïs Maire, M. Puccio, A. Khuntia, N. Kovačić, Niveditha Ramasubramanian, N. Funicello, Mudit Vaid, Amina Khatun, N. Tiltmann, M. Castoldi, Peter Stratmann, Valentina Akishina, Nancy Poljak, Anupama Rai, A. Matyja, Tek Chand Bhalla, J. Wiechuła, V. Manzari, L. Pinsky, Tonmoy Sharma, R. Guernane, Renu Bala, Maksymilian Wojnar, Umberto Follo, T. Gahlaut, Ryan Patrick Hannigan, P. Larionov, Ana Maria Marin, Tao Fang, Alessandro Grelli, Mario Ciacco, P. Crochet, Rishat Sultanov, M. 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article en

Abstract

Abstract The dependence of $$\textrm{f}_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> </mml:math> (980) production on the final-state charged-particle multiplicity is reported for proton–proton (pp) collisions at the centre-of-mass energy, $$\sqrt{s}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 13 TeV. The production of $$\textrm{f}_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> </mml:math> (980) is measured with the ALICE detector via the $$\textrm{f}_0 (980) \rightarrow \pi ^{+}\pi ^{-}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>980</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>-</mml:mo> </mml:msup> </mml:mrow> </mml:math> decay channel in a midrapidity region of $$|y|&lt;$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>|</mml:mo> <mml:mi>y</mml:mi> <mml:mo>|</mml:mo> <mml:mo>&lt;</mml:mo> </mml:mrow> </mml:math> 0.5. The evolution of the integrated yields and mean transverse momentum of f $$_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>0</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> (980) as a function of charged-particle multiplicity measured in pp at $$\sqrt{s}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 13 TeV follows the trends observed in pp at $$\sqrt{s}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 5.02 TeV and in proton–lead (p–Pb) collisions at $$\sqrt{s_{\textrm{NN}}}=$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mtext>NN</mml:mtext> </mml:msub> </mml:msqrt> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> 5.02 TeV. Particle yield ratios of $$\textrm{f}_{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>f</mml:mtext> <mml:mn>0</mml:mn> </mml:msub> </mml:math> (980) to $$\pi ^{\pm }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo> </mml:msup> </mml:math> and $$\textrm{K}^{*}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mtext>K</mml:mtext> <mml:mrow/> <mml:mrow> <mml:mrow/> <mml:mo>∗</mml:mo> </mml:mrow> </mml:mmultiscripts> </mml:math> (892) $$^{0}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>0</mml:mn> </mml:mmultiscripts> </mml:math> are found to decrease with increasing charged-particle multiplicity. These particle ratios are compared with calculations from the canonical statistical thermal model as a function of charged-particle multiplicity. The thermal model calculations provide a better description of the decreasing trend of particle ratios when no strange or antistrange quark composition for f $$_{0}$$ <mml:math xmlns:mml="http://www.w3.org

The European Physical Journal CVol. 86(1)
University of Foggia (IT), Warsaw University of Technology (PL), National Agency for New Technologies, Energy and Sustainable Economic Development (IT), University of Messina (IT), Hiroshima University (JP), Goethe University Frankfurt (DE), Creighton University (US), Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT), University of Copenhagen (DK), University of Science and Technology of China (CN), Jagiellonian University (PL), Oak Ridge National Laboratory (US), Universidade Federal do Rio Grande do Sul (BR), A. Alikhanyan National Laboratory (AM), Gangneung–Wonju National University (KR), University of Bonn (DE), Gauhati University (IN), University of Jammu (IN), University of Tsukuba (JP), University of Kansas (US), University of Liverpool (GB), Lawrence Berkeley National Laboratory (US), National Academy of Sciences of Ukraine (UA), California Polytechnic State University (US), Bose Institute (IN), Indian Institute of Technology Bombay (IN), Chungbuk National University (KR), GSI Helmholtz Centre for Heavy Ion Research (DE), Aligarh Muslim University (IN), Saga University (JP), Politecnico di Torino (IT), Universidade de São Paulo (BR), University of Zagreb (HR), Universidade Estadual de Campinas (UNICAMP) (BR), Technical University of Košice (SK), University of Oslo (NO), Wayne State University (US), Lund University (SE), Nagasaki Institute of Applied Science (JP), Inha University (KR), University of the Witwatersrand (ZA), Utrecht University (NL), Yonsei University (KR), Universidad Autónoma de Sinaloa (MX), Université Clermont Auvergne (FR), Homi Bhabha National Institute (IN), National and Kapodistrian University of Athens (GR), Université de Lyon (FR), University of Pavol Jozef Šafárik (SK), Slovak Academy of Sciences (SK), University of Wrocław (PL), University of Derby (GB), Heidelberg University (DE), Fudan University (CN), University of Pavia (IT), Université Paris-Saclay (FR), Helsinki Institute of Physics (FI), University of South-Eastern Norway (NO), Daresbury Laboratory (GB), University of California System (US), Sejong University (KR), China University of Geosciences (CN), Yale University (US), Central China Normal University (CN), Yıldız Technical University (TR), Max Planck Institute for Physics (DE), Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering (RO), National Institute for Subatomic Physics (NL), China Institute of Atomic Energy (CN), National Centre for Nuclear Research (PL), Istituto Nazionale di Fisica Nucleare, Sezione di Torino (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Catania (IT), Environnement, ville, société (FR), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), HUN-REN Wigner Research Centre for Physics (HU), Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari (IT), National Nuclear Research Center (AZ), South Great Plain Regional Innovation Agency (HU), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Hospital Universitário da Universidade de São Paulo (BR), Institute of Space Science - INFLPR Subsidiary (RO), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT), Czech Academy of Sciences, Nuclear Physics Institute (CZ), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT), Stefan Meyer Institute for Subatomic Physics (AT), Max Planck Institute for Nuclear Physics (DE), Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CU), Gesellschaft Fur Mathematik Und Datenverarbeitung (DE), National Research and Innovation Agency (ID), University of Bergen (NO), University of Houston (US), Czech Technical University in Prague (CZ), Pusan National University (KR), Panjab University (IN), The Ohio State University (US), Universitatea Națională de Știință și Tehnologie Politehnica București (RO), Technical University of Munich (DE), Indian Institute of Technology Indore (IN), Pontificia Universidad Católica del Perú (PE), European Organization for Nuclear Research (CH), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (MX), AGH University of Krakow (PL), Polytechnic University of Bari (IT), Université de Strasbourg (FR), Universidade Federal do ABC (BR), Benemérita Universidad Autónoma de Puebla (MX), Chicago State University (US), Comenius University Bratislava (SK), The University of Tokyo (JP), University of Tennessee at Knoxville (US), University of Birmingham (GB), University of Brescia (IT), Jeonbuk National University (KR), University of Tübingen (DE), Suranaree University of Technology (TH), Sungkyunkwan University (KR), The University of Texas at Austin (US), Korea Institute of Science & Technology Information (KR), Universidad Nacional Autónoma de México (MX), Université Grenoble Alpes (FR), University of Split (HR), University of Jyväskylä (FI), Nantes Université (FR), Nara Women's University (JP), Polish Academy of Sciences (PL)
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Particle physics theoretical and experimental studies
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