Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

A bstract The production cross sections of D 0 , D + , and $$ {\Lambda}_{\textrm{c}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity in proton–lead (p–Pb) collisions at the center-of-mass energy per nucleon pair of $$ \sqrt{s_{\textrm{NN}}} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mi>NN</mml:mi> </mml:msub> </mml:msqrt> </mml:math> = 5 . 02 TeV. Nuclear modification factors ( R pPb ) of non-prompt D 0 , D + , and $$ {\Lambda}_{\textrm{c}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> are calculated as a function of the transverse momentum ( p T ) to investigate the modification of the momentum spectra measured in p–Pb collisions with respect to those measured in proton–proton (pp) collisions at the same energy. The R pPb measurements are compatible with unity and with the measurements in the prompt charm sector, and do not show a significant p T dependence. The p T -integrated cross sections and p T -integrated R pPb of non-prompt D 0 and D + mesons are also computed by extrapolating the visible cross sections down to p T = 0. The non-prompt D-meson R pPb integrated over p T is compatible with unity and with model calculations implementing modification of the parton distribution functions of nucleons bound in nuclei with respect to free nucleons. The non-prompt $$ {\Lambda}_{\textrm{c}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> / D 0 and D + / D 0 production ratios are computed to investigate hadronisation mechanisms of beauty quarks into mesons and baryons. The measured ratios as a function of p T display a similar trend to that measured for charm hadrons in the same collision system.

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Journal
Journal of High Energy Physics
Published
2024-11-26
DOI
https://doi.org/10.1007/jhep11(2024)148
Citations
1
Primary Topic
High-Energy Particle Collisions Research
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article
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0.66

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article

Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

L. Lautner, I. Ravasenga, Adrian Horzyk, N. Rubini et al.
1 citations
Journal of High Energy Physics
High-Energy Particle Collisions Research
0.66
article

Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

L. Lautner, I. Ravasenga, Adrian Horzyk, N. Rubini, A. Borissov, M. Germain, X. Bai, P. Gasik, A. Yuncu, K. Schweda, F. Manso, A. Manea, J. G. Contreras, M. Mazzilli, L. Fabbietti, N. Agrawal, Z. Ahammed, A. Roy, I.-K. Yoo, I. G. Bearden, B. Paul, Manuel Viqueira Rodriguez, G. Luparello, A. Dubla, W. Guo, T. Virgili, R. Turrisi, R. Rath, Prasanna Kumar Sahu, Artem Kotliarov, K. Røed, D. Ruggiano, B. Zhang, I. Fokin, A. Hutson, A. Shangaraev, A. Grelli, T. Bodova, M. V. Hartung, D. Røhr, Y. W. Baek, I. Altsybeev, A. Bhasin, M. Kim, A. Kurepin, T. Tkacik, M. Gagliardi, M. M. Czarnynoga, Giulia Gioachin, M. Agnello, G. L. Usaı́, J. Castillo Castellanos, M. Planinić, C. Terrevoli, Emma Rose Yeats, D. Peresunko, Andrey Vasiliev, G. H. Hong, E. Rogochaya, V. Zaccolo, E. Grecka, G. Contin, R. Lavicka, Siyu Tang, F. Soramel, Mihaela Gabriela Besoiu, J. Wilkinson, C. Cheshkov, S. A. Bysiak, Jesús Ricardo Alvarado García, Konstantin Mikhaylov, J. W. Myrcha, H. M. Alfanda, Mihai Carabaș, M. 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Abstract

A bstract The production cross sections of D 0 , D + , and $$ {\Lambda}_{\textrm{c}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity in proton–lead (p–Pb) collisions at the center-of-mass energy per nucleon pair of $$ \sqrt{s_{\textrm{NN}}} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mi>NN</mml:mi> </mml:msub> </mml:msqrt> </mml:math> = 5 . 02 TeV. Nuclear modification factors ( R pPb ) of non-prompt D 0 , D + , and $$ {\Lambda}_{\textrm{c}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> are calculated as a function of the transverse momentum ( p T ) to investigate the modification of the momentum spectra measured in p–Pb collisions with respect to those measured in proton–proton (pp) collisions at the same energy. The R pPb measurements are compatible with unity and with the measurements in the prompt charm sector, and do not show a significant p T dependence. The p T -integrated cross sections and p T -integrated R pPb of non-prompt D 0 and D + mesons are also computed by extrapolating the visible cross sections down to p T = 0. The non-prompt D-meson R pPb integrated over p T is compatible with unity and with model calculations implementing modification of the parton distribution functions of nucleons bound in nuclei with respect to free nucleons. The non-prompt $$ {\Lambda}_{\textrm{c}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> / D 0 and D + / D 0 production ratios are computed to investigate hadronisation mechanisms of beauty quarks into mesons and baryons. The measured ratios as a function of p T display a similar trend to that measured for charm hadrons in the same collision system.

Journal of High Energy PhysicsVol. 2024(11)
Université Claude Bernard Lyon 1 (FR), 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), Variable Energy Cyclotron Centre (IN), Oak Ridge National Laboratory (US), Centre National de la Recherche Scientifique (FR), 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 Trieste (IT), 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), University of Cape Town (ZA), Saha Institute of Nuclear Physics (IN), Indian Institute of Technology Bombay (IN), National Institute of Science Education and Research (IN), Chungbuk National University (KR), GSI Helmholtz Centre for Heavy Ion Research (DE), Aligarh Muslim University (IN), Saga University (JP), Politecnico di Torino (IT), Western Norway University of Applied Sciences (NO), 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), University of Pavol Jozef Šafárik (SK), Slovak Academy of Sciences (SK), University of Wrocław (PL), University of Derby (GB), Heidelberg University (DE), University of Münster (DE), Fudan University (CN), University of Pavia (IT), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Université Paris-Saclay (FR), University of Tennessee System (US), Helsinki Institute of Physics (FI), University of South-Eastern Norway (NO), Frankfurt Institute for Advanced Studies (DE), Daresbury Laboratory (GB), University of California System (US), Sejong University (KR), United Nations University Institute for Sustainability and Peace (JP), China University of Geosciences (CN), Yale University (US), Institute of Physics, Bhubaneshwar (IN), Central China Normal University (CN), Yıldız Technical University (TR), Max Planck Institute for Physics (DE), Institute of Experimental Physics of the Slovak Academy of Sciences (SK), 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), Technologie- und Förderzentrum im Kompetenzzentrum für Nachwachsende Rohstoffe (DE), National Centre for Nuclear Research (PL), Institut de Physique (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Torino (IT), Laboratoire de Physique de Clermont Auvergne (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Institute of Nuclear Physics, Polish Academy of Sciences (PL), Laboratoire de Physique Subatomique et des Technologies Associées (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Pavia (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Catania (IT), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), HUN-REN Wigner Research Centre for Physics (HU), IMT Atlantique (FR), CEA Paris-Saclay (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari (IT), National Nuclear Research Center (AZ), Institut National de Physique Nucléaire et de Physique des Particules (FR), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR), South Great Plain Regional Innovation Agency (HU), Laboratoire de Physique Subatomique et de Cosmologie (FR), 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), KTO Karatay University (TR), Bogolyubov Institute for Theoretical Physics (UA), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CU), 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), Sofia University "St. Kliment Ohridski" (BG), 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), National Research Foundation (ZA), 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), University of California, Berkeley (US), Nantes Université (FR), Nara Women's University (JP), Polish Academy of Sciences (PL)
National Science Foundation, U.S. Department of Energy, České Vysoké Učení Technické v Praze, Villum Fonden, Slovenská Akadémia Vied, CERN, Høgskulen på Vestlandet, Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei', Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu, Badan Riset dan Inovasi Nasional, European Commission, National Research Foundation, Department of Science and Technology, Ministry of Science and Technology, India, Council of Scientific and Industrial Research, India, University Grants Commission, Ministry of Education, Culture, Sports, Science and Technology, Danmarks Grundforskningsfond, Fundação de Amparo à Pesquisa do Estado de São Paulo, National Natural Science Foundation of China, Österreichischen Akademie der Wissenschaften, Grantová Agentura České Republiky, Universiteit Utrecht, Ministry of Education of the People's Republic of China, Bundesministerium für Bildung und Forschung, Austrian Science Fund, Inha University, Consejo Nacional de Ciencia y Tecnología, Ministerstvo školstva, vedy, výskumu a športu Slovenskej republiky, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Fudan University, General Secretariat for Research and Technology, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Korea Institute of Science and Technology, Korea Institute of Science and Technology Information, National Research Foundation of Korea, National Science and Technology Development Agency, Akademie Věd České Republiky, Suranaree University of Technology, Vetenskapsrådet, Hrvatska Zaklada za Znanost, Università degli Studi di Pavia, Centre National de la Recherche Scientifique, Financiadora de Estudos e Projetos, Danmarks Frie Forskningsfond, Universidade Federal do Rio Grande do Sul, Norges Forskningsråd, Gauhati University, Goethe-Universität Frankfurt am Main, Universidad Nacional Autónoma de México, Indian Institute of Technology Bombay, Gangneung-Wonju National University, State Committee of Science, Fondo de Cooperación Internacional en Ciencia y Tecnología, Rheinische Friedrich-Wilhelms-Universität Bonn, Indian Institute of Technology Indore, Pontificia Universidad Católica del Perú, Istituto Nazionale di Fisica Nucleare, Homi Bhabha National Institute, Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear, Science and Technology Facilities Council, Japan Society for the Promotion of Science, Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México, GSI Helmholtzzentrum für Schwerionenforschung, Institut National de Physique Nucléaire et de Physique des Particules, Wigner Fizikai Kutatóközpont, Magyar Tudományos Akadémia, National Research, Development and Innovation Office, High Energy Physics, Nuclear Physics, FP7 International Cooperation
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High-Energy Particle Collisions Research
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