Abstract
Measurements of the production of electrons from heavy-flavour hadron decays in pp collisions at s = 13 TeV at midrapidity with the ALICE detector are presented down to a transverse momentum (p T) of 0.2 GeV/c and up to p T = 35 GeV/c, which is the largest momentum range probed for inclusive electron measurements in ALICE. In p-Pb collisions, the production cross section and the nuclear modification factor of electrons from heavy-flavour hadron decays are measured in the p T range 0.5 < p T < 26 GeV/c at sNN = 8.16 TeV. The nuclear modification factor is found to be consistent with unity within the statistical and systematic uncertainties. In both collision systems, first measurements of the yields of electrons from heavy-flavour hadron decays in different multiplicity intervals normalised to the multiplicity-integrated yield (self-normalised yield) at midrapidity are reported as a function of the self-normalised charged-particle multiplicity estimated at midrapidity. The self-normalised yields in pp and p-Pb collisions grow faster than linear with the self-normalised multiplicity. A strong p T dependence is observed in pp collisions, where the yield of high-p T electrons increases faster as a function of multiplicity than the one of low-p T electrons. The measurement in p-Pb collisions shows no p T dependence within uncertainties. The self-normalised yields in pp and p-Pb collisions are compared with measurements of other heavy-flavour, light-flavour, and strange particles, and with Monte Carlo simulations. [Figure not available: see fulltext.]
Original language | English |
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Article number | 6 |
Journal | Journal of High Energy Physics |
Volume | 2023 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2023 |
Funding
The ALICE Collaboration would like to thank all its engineers and technicians for their invaluable contributions to the construction of the experiment and the CERN accelerator teams for the outstanding performance of the LHC complex. The ALICE Collaboration gratefully acknowledges the resources and support provided by all Grid centres and the Worldwide LHC Computing Grid (WLCG) collaboration. The ALICE Collaboration acknowledges the following funding agencies for their support in building and running the ALICE detector: A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation (ANSL), State Committee of Science and World Federation of Scientists (WFS), Armenia; Austrian Academy of Sciences, Austrian Science Fund (FWF): [M 2467-N36] and Nationalstiftung für Forschung, Technologie und Entwicklung, Austria; Ministry of Communications and High Technologies, National Nuclear Research Center, Azerbaijan; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Financiadora de Estudos e Projetos (Finep), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) and Universidade Federal do Rio Grande do Sul (UFRGS), Brazil; Bulgarian Ministry of Education and Science, within the National Roadmap for Research Infrastructures 2020–2027 (object CERN), Bulgaria; Ministry of Education of China (MOEC), Ministry of Science & Technology of China (MSTC) and National Natural Science Foundation of China (NSFC), China; Ministry of Science and Education and Croatian Science Foundation, Croatia; Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Cubaenergía, Cuba; Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic; The Danish Council for Independent Research | Natural Sciences, the VILLUM FONDEN and Danish National Research Foundation (DNRF), Denmark; Helsinki Institute of Physics (HIP), Finland; Commissariat à l’Energie Atomique (CEA) and Institut National de Physique Nucléaire et de Physique des Particules (IN2P3) and Centre National de la Recherche Scientifique (CNRS), France; Bundesministerium für Bildung und Forschung (BMBF) and GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany; General Secretariat for Research and Technology, Ministry of Education, Research and Religions, Greece; National Research, Development and Innovation Office, Hungary; Department of Atomic Energy Government of India (DAE), Department of Science and Technology, Government of India (DST), University Grants Commission, Government of India (UGC) and Council of Scientific and Industrial Research (CSIR), India; National Research and Innovation Agency — BRIN, Indonesia; Istituto Nazionale di Fisica Nucleare (INFN), Italy; Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and Japan Society for the Promotion of Science (JSPS) KAKENHI, Japan; Consejo Nacional de Ciencia (CONACYT) y Tecnología, through Fondo de Cooperación Internacional en Ciencia y Tecnología (FONCICYT) and Dirección General de Asuntos del Personal Academico (DGAPA), Mexico; Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands; The Research Council of Norway, Norway; Commission on Science and Technology for Sustainable Development in the South (COMSATS), Pakistan; Pontificia Universidad Católica del Perú, Peru; Ministry of Education and Science, National Science Centre and WUT ID-UB, Poland; Korea Institute of Science and Technology Information and National Research Foundation of Korea (NRF), Republic of Korea; Ministry of Education and Scientific Research, Institute of Atomic Physics, Ministry of Research and Innovation and Institute of Atomic Physics and University Politehnica of Bucharest, Romania; Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia; National Research Foundation of South Africa, South Africa; Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation (KAW), Sweden; European Organization for Nuclear Research, Switzerland; Suranaree University of Technology (SUT), National Science and Technology Development Agency (NSTDA), Thailand Science Research and Innovation (TSRI) and National Science, Research and Innovation Fund (NSRF), Thailand; Turkish Energy, Nuclear and Mineral Research Agency (TENMAK), Turkey; National Academy of Sciences of Ukraine, Ukraine; Science and Technology Facilities Council (STFC), United Kingdom; National Science Foundation of the United States of America (NSF) and United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America. In addition, individual groups or members have received support from: European Research Council, Strong 2020 — Horizon 2020 (grant nos. 950692, 824093), European Union; Academy of Finland (Center of Excellence in Quark Matter) (grant nos. 346327, 346328), Finland; DST-DAAD Project-based Personnel Exchange Programme, India; Programa de Apoyos para la Superación del Personal Académico, UNAM, Mexico.
Funders | Funder number |
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DST-DAAD | |
General Secretariat for Research and Technology, Ministry of Education, Research and Religions | |
Helsinki Institute of Physics | |
Institute of Atomic Physics and University Politehnica of Bucharest | |
Ministry of Communications and High Technologies | |
Ministry of Education, Science, Research and Sport | |
Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic | |
Ministry of Science and Education and Croatian Science Foundation | |
NSRF | |
National Nuclear Research Center | |
National Science, Research and Innovation Fund | |
Programa de Apoyos para la Superación del Personal Académico, UNAM | |
State Committee of Science and World Federation | |
University Grants Commission, Government of India | |
WUT ID-UB | |
Yerevan Physics Institute | |
U.S. Department of Energy | |
Nuclear Physics | |
Natur og Univers, Det Frie Forskningsråd | |
Villum Fonden | |
Ministry of Education and Science | |
Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung | |
CERN | |
Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu | |
Badan Riset dan Inovasi Nasional | |
Science and Technology Facilities Council | |
European Commission | |
European Research Council | |
National Research Foundation | |
Department of Science and Technology, Ministry of Science and Technology, India | |
Council of Scientific and Industrial Research, India | |
University Grants Commission | |
Department of Atomic Energy, Government of India | |
Japan Society for the Promotion of Science | |
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 | |
Ministry of Education of the People's Republic of China | |
Academy of Finland | 346328, 346327 |
Academy of Finland | |
Bundesministerium für Bildung und Forschung | |
Austrian Science Fund | M 2467-N36 |
Austrian Science Fund | |
Ministry of Science and Technology of the People's Republic of China | |
Consejo Nacional de Ciencia y Tecnología | |
Nederlandse Organisatie voor Wetenschappelijk Onderzoek | |
Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
Korea Institute of Science and Technology Information | |
National Research Foundation of Korea | |
Instituto Nazionale di Fisica Nucleare | |
Knut och Alice Wallenbergs Stiftelse | |
National Science and Technology Development Agency | |
Narodowe Centrum Nauki | |
Suranaree University of Technology | |
Vetenskapsrådet | |
National Academy of Sciences of Ukraine | |
Centre National de la Recherche Scientifique | |
Financiadora de Estudos e Projetos | |
Universidade Federal do Rio Grande do Sul | |
Norges Forskningsråd | |
Ministry of Education and Science | |
Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México | |
Commissariat à l'Énergie Atomique et aux Énergies Alternatives | |
Ministry of Higher Education and Scientific Research | |
Horizon 2020 | 824093, 950692 |
Horizon 2020 | |
Fondo de Cooperación Internacional en Ciencia y Tecnología | |
GSI Helmholtzzentrum für Schwerionenforschung | |
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal | |
Institut National de Physique Nucléaire et de Physique des Particules | |
Ontario Ministry of Research and Innovation | |
Thailand Science Research and Innovation | |
Institutul de Fizică Atomică | |
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear |
Keywords
- Hadron-Hadron Scattering