Abstract
The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at sNN=8.16TeV, are studied over a wide range of event multiplicities. Multiparticle correlations are used to isolate global properties stemming from the collision overlap geometry. The second-order "elliptic" harmonic moment is obtained with high precision through four-, six-, and eight-particle correlations and, for the first time, the third-order "triangular" harmonic moment is studied using four-particle correlations. A sample of peripheral PbPb collisions at sNN=5.02TeV that covers a similar range of event multiplicities as the pPb results is also analyzed. Model calculations of initial-state fluctuations in pPb and PbPb collisions can be directly compared to the high-precision experimental results. This work provides new insight into the fluctuation-driven origin of the v3 coefficients in pPb and PbPb collisions, and into the dominating overall collision geometry in PbPb collisions at the earliest stages of heavy ion interactions.
| Original language | English |
|---|---|
| Article number | 014912 |
| Journal | Physical Review C |
| Volume | 101 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 23 Jan 2020 |
Bibliographical note
Publisher Copyright:© 2020 CERN , for the CMS Collaboration. Published by the American Physical Society.
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); DOE and NSF (USA). Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, Contracts No. 675440 and No. 765710 (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO (Belgium) under the “Excellence of Science–EOS” be.h Project No. 30820817; the Beijing Municipal Science & Technology Commission, No. Z181100004218003; the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Lendület (“Momentum”) Program and the János Bolyai Research Scholarship of the Hungarian Academy of Sciences, the New National Excellence Program ÚNKP, the NKFIA Research Grants No. 123842, No. 123959, No. 124845, No. 124850, No. 125105, No. 128713, No. 128786, and No. 129058 (Hungary); the Council of Science and Industrial Research, India; the HOMING PLUS program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, and Sonata-bis 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, Grant No. MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias; the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); the Welch Foundation, Contract No. C-1845; and the Weston Havens Foundation (USA).
| Funders | Funder number |
|---|---|
| CPAN | |
| EU-ESF | |
| Excellence of Science | 30820817 |
| MSES | |
| MoER | |
| PCTI | |
| Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu | MDM-2015-0509 |
| STAR | |
| National Science Foundation | |
| U.S. Department of Energy | |
| Alfred P. Sloan Foundation | |
| Welch Foundation | C-1845 |
| Hispanics in Philanthropy | |
| Maryland Ornithological Society | |
| Alexander von Humboldt-Stiftung | |
| Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS) | |
| Qatar National Research Fund | |
| Ministry of Education and Science | |
| Direktion für Entwicklung und Zusammenarbeit | |
| Secretaría de Educación Pública | |
| Türkiye Atom Enerjisi Kurumu | |
| Horizon 2020 Framework Programme | |
| Weston Havens Foundation | |
| Louisiana Academy of Sciences | |
| CERN | |
| Thailand Center of Excellence in Physics | |
| Cosmetic Surgery Foundation | |
| Institute for the Promotion of Teaching Science and Technology | |
| Ministerstwo Obrony Narodowej | |
| Science and Technology Facilities Council | |
| European Commission | |
| European Research Council | |
| Department of Science and Technology, Ministry of Science and Technology, India | |
| Council of Scientific and Industrial Research, 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 | |
| Ministerstvo Školství, Mládeže a Tělovýchovy | |
| National Science Council | |
| Fundacja na rzecz Nauki Polskiej | |
| Fundação para a Ciência e a Tecnologia | |
| Russian Foundation for Basic Research | |
| Eesti Teadusagentuur | |
| 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 | |
| Belgian Federal Science Policy Office | |
| Chulalongkorn University | |
| Federación Española de Enfermedades Raras | |
| Fonds Wetenschappelijk Onderzoek | |
| Agentschap voor Innovatie door Wetenschap en Technologie | |
| Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture | |
| Consejo Nacional de Ciencia y Tecnología | |
| Ministerio de Educación, Cultura y Deporte | |
| 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 | |
| National Research Foundation of Korea | |
| Joint Institute for Nuclear Research | |
| Magyar Tudományos Akadémia | 124845, 123842, 129058, 125105, 124850, 128786, 128713, 123959 |
| Instituto Nazionale di Fisica Nucleare | |
| A.G. Leventis Foundation | |
| National Science and Technology Development Agency | Thailand |
| Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul | |
| Narodowe Centrum Nauki | 2014/15/B/ST2/03998, 2012/07/E/ST2/01406, 2015/19/B/ST2/02861, 2014/14/M/ST2/00428, 2014/13/B/ST2/02543 |
| Secretaría de Educación Superior, Ciencia, Tecnología e Innovación | |
| Universiti Malaya | |
| Türkiye Bilimsel ve Teknolojik Araştirma Kurumu | |
| Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja | |
| Ministerstwo Edukacji i Nauki | |
| Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro | |
| Ministry of Science and Technology, Taiwan | |
| National Academy of Sciences of Ukraine | |
| Centre National de la Recherche Scientifique | |
| Universidad Autónoma de San Luis Potosí | |
| 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 | |
| Secretaría de Estado de Investigación, Desarrollo e Innovación | |
| Horizon 2020 | 675440, 765710 |
| 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 | |
| Beijing Municipal Science and Technology Commission | Z181100004218003 |
| Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie | |
| Institut National de Physique Nucléaire et de Physique des Particules | |
| Nemzeti Kutatási, Fejlesztési és Innovaciós Alap | |
| National Research Center "Kurchatov Institute" | |
| Laboratorio Nacional de Supercómputo del Sureste de Mexico |