Abstract
The transverse momentum spectra of D0 mesons from b hadron decays are measured at midrapidity (|y|<1) in pp and Pb-Pb collisions at a nucleon-nucleon center of mass energy of 5.02 TeV with the CMS detector at the LHC. The D0 mesons from b hadron decays are distinguished from prompt D0 mesons by their decay topologies. In Pb-Pb collisions, the B?D0 yield is found to be suppressed in the measured pT range from 2 to 100 GeV/c as compared to pp collisions. The suppression is weaker than that of prompt D0 mesons and charged hadrons for pT around 10 GeV/c. While theoretical calculations incorporating partonic energy loss in the quark-gluon plasma can successfully describe the measured B?D0 suppression at higher pT, the data show an indication of larger suppression than the model predictions in the range of 2<pT<5 GeV/c.
| Original language | English |
|---|---|
| Article number | 022001 |
| Pages (from-to) | 1Dummy |
| Journal | Physical Review Letters |
| Volume | 123 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 9 Jul 2019 |
Bibliographical note
Publisher Copyright:© 2019 CERN.
Funding
We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); and DOE and NSF (USA).
| Funders | Funder number |
|---|---|
| CNRS/IN2P3 | |
| CPAN | |
| ERC IUT | |
| IPST | |
| LNS | |
| MESTD | |
| MON | |
| MSES | |
| MSHE | |
| MoER | |
| PCTI | |
| STAR | |
| Swiss Funding Agencies | |
| TUBITAK | |
| ThEPCenter | |
| UASLP-FAI | |
| National Science Foundation | 1913624 |
| U.S. Department of Energy | |
| Hispanics in Philanthropy | |
| CS Fund | |
| Maryland Ornithological Society | |
| University of Minnesota | |
| Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS) | |
| California Earthquake Authority | |
| Secretaría de Educación Pública | |
| Türkiye Atom Enerjisi Kurumu | |
| Louisiana Academy of Sciences | |
| Rochester Academy of Science | |
| Missouri University of Science and Technology | |
| Star Scientific Foundation | |
| CERN | |
| Thailand Center of Excellence in Physics | |
| Cosmetic Surgery Foundation | |
| Institute for the Promotion of Teaching Science and Technology | |
| Mountain Equipment Co-operative | |
| Science and Technology Facilities Council | GRIDPP, ST/N000242/1 |
| Department of Science and Technology, Ministry of Science and Technology, India | |
| Ministry of Education - Singapore | |
| Department of Atomic Energy, Government of India | |
| Taighde Éireann - Research Ireland | |
| Helmholtz-Gemeinschaft | |
| Deutsche Forschungsgemeinschaft | |
| Fundação de Amparo à Pesquisa do Estado de São Paulo | |
| National Natural Science Foundation of China | |
| Research Promotion Foundation | |
| National Science Council | |
| Fundação para a Ciência e a Tecnologia | |
| Russian Foundation for Basic Research | |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
| Academy of Finland | |
| Bundesministerium für Bildung und Forschung | |
| Chinese Academy of Sciences | |
| Austrian Science Fund | |
| Fonds De La Recherche Scientifique - FNRS | |
| Russian Academy of Sciences | |
| Fonds Wetenschappelijk Onderzoek | |
| Consejo Nacional de Ciencia y Tecnología | |
| Ministerio de Economía y Competitividad | |
| General Secretariat for Research and Technology | |
| Ministry of Business, Innovation and Employment | |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
| Ministry of Science, ICT and Future Planning | |
| Ministry of Science and Technology | |
| National Research Foundation of Korea | |
| Joint Institute for Nuclear Research | |
| Instituto Nazionale di Fisica Nucleare | |
| National Science and Technology Development Agency | Thailand |
| Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul | |
| Secretaría de Educación Superior, Ciencia, Tecnología e Innovación | |
| Universiti Malaya | |
| Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro | |
| Ministry for Business Innovation and Employment | |
| Ministry of Science and Technology, Taiwan | |
| National Academy of Sciences of Ukraine | |
| Centre National de la Recherche Scientifique | |
| Ministry of Education and Science | |
| Institute for Research in Fundamental Sciences | |
| Benemérita Universidad Autónoma de Puebla | |
| Commissariat à l'Énergie Atomique et aux Énergies Alternatives | |
| Bundesministerium für Bildung und Frauen | |
| Secretaría de Estado de Investigación, Desarrollo e Innovación | |
| European Regional Development Fund | |
| State Atomic Energy Corporation ROSATOM | |
| Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional | |
| Pakistan Atomic Energy Commission | |
| State Fund for Fundamental Research of Ukraine | |
| Ministry of Science,Technology and Research | |
| Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie | |
| Institut National de Physique Nucléaire et de Physique des Particules | |
| Nemzeti Kutatási, Fejlesztési és Innovaciós Alap | |
| Istituto Nazionale di Fisica Nucleare | |
| National Research Center "Kurchatov Institute" | |
| Consejo Nacional de Ciencia y TecnologÃa, Paraguay |