Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP12(2022)126
Keywords
Heavy Ion Experiments; Heavy Quark Production; Quark Gluon Plasma
Categories
Funding
- Worldwide LHC Computing Grid (WLCG) collaboration
- 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]
- Nationalstiftung fur Forschung
- Technologie und Entwicklung, Austria
- Ministry of Communications and High Technologies
- National Nuclear Research Center, Azerbaijan
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Financiadora de Estudos e Projetos (Finep)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
- Universidade Federal do Rio Grande do Sul (UFRGS), Brazil
- 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 Tecnologicas y Desarrollo Nuclear (CEADEN), Cubaenergia, Cuba
- Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic
- Danish Council for Independent Research | Natural Sciences
- VILLUM FONDEN and Danish National Research Foundation (DNRF), Denmark
- Helsinki Institute of Physics (HIP), Finland
- Commissariat a l'Energie Atomique (CEA)
- Institut National de Physique Nucleaire et de Physique des Particules (IN2P3)
- Centre National de la Recherche Scientifique (CNRS), France
- Bundesministerium fur Bildung und Forschung (BMBF) and GSI Helmholtzzentrum fur 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
- Indonesian Institute of Science, 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 Tecnologia, through Fondo de Cooperacion Internacional en Ciencia y Tecnologia (FONCICYT) and Direccion General de Asuntos del Personal Academico (DGAPA), Mexico
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), The Netherlands
- Research Council of Norway, Norway
- Commission on Science and Technology for Sustainable Development in the South (COMSATS), Pakistan
- Pontificia Universidad Catolica del Peru, 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
- Joint Institute for Nuclear Research (JINR)
- Ministry of Education and Science of the Russian Federation
- ational Research Centre Kurchatov Institute
- Russian Science Foundation and Russian Foundation for Basic Research, Russia
- 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 (NSDTA)
- 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
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The production rate of non-prompt D-0 mesons was measured in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of root s(NN)=5.02TeV. The data indicates a significant suppression of non-prompt D-0 mesons, especially at high momentum, in the 0-10% centrality class of Pb-Pb collisions. Models suggest that this suppression is caused by the lower energy loss of beauty quarks compared to charm quarks in the quark-gluon plasma due to their larger mass.
The production of non-prompt D-0 mesons from beauty-hadron decays was measured at midrapidity (vertical bar y vertical bar < 0.5) in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of root s(NN) = 5.02TeV with the ALICE experiment at the LHC. Their nuclear modification factor (R-AA), measured for the first time down to p(T) = 1 GeV/ c in the 0-10% and 30-50% centrality classes, indicates a significant suppression, up to a factor of about three, for p(T) > 5 GeV/ c in the 0-10% central Pb-Pb collisions. The data are described by models that include both collisional and radiative processes in the calculation of beauty-quark energy loss in the quark-gluon plasma, and quark recombination in addition to fragmentation as a hadronisation mechanism. The ratio of the non-prompt to prompt D-0-meson R-AA is larger than unity for p(T) > 4 GeV/c in the 0-10% central Pb-Pb collisions, as predicted by models in which beauty quarks lose less energy than charm quarks in the quark-gluon plasma because of their larger mass.
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