Journal
PHYSICAL REVIEW C
Volume 96, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.96.034904
Keywords
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Categories
Funding
- Worldwide LHC Computing Grid (WLCG)
- A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation (ANSL), Armenia
- State Committee of Science and World Federation of Scientists (WFS), Armenia
- Austrian Academy of Sciences, Austria
- Nationalstiftung fur Forschung, Technologie und Entwicklung, Austria
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil
- Financiadora de Estudos e Projetos (Finep), Brazil
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil
- Ministry of Education of China (MOE of China), China
- Ministry of Science AMP
- Technology of China (MOST of China), China
- National Natural Science Foundation of China (NSFC), China
- Ministry of Science, Education and Sport, Croatia
- Croatian Science Foundation, Croatia
- Centro de Investigaciones Energeticas Medioambientales y Tecnologicas (CIEMAT), Cuba
- Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic
- Danish National Research Foundation (DNRF), Denmark
- Carlsberg Foundation, Denmark
- Danish Council for Independent Research-Natural Sciences, Denmark
- Helsinki Institute of Physics (HIP), Finland
- Commissariat a l'Energie Atomique (CEA), France
- Institut National de Physique Nucleaire et de Physique des Particules (IN2P3), France
- Centre National de la Recherche Scientifique (CNRS), France
- Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie (BMBF), Germany
- GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Germany
- Ministry of Education, Research and Religious Affairs, Greece
- National Research, Development and Innovation Office, Hungary
- Department of Atomic Energy Government of India (DAE), India
- Indonesian Institute of Science, Indonesia
- Centro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), Italy
- Institute for Innovative Science and Technology, Nagasaki Institute of Applied Science (IIST), Japan
- Japan Society for the Promotion of Science (JSPS) KAKENHI, Japan
- Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Consejo Nacional de Ciencia (CONACYT) y Tecnologia, through Fondo de Cooperacion Internacional en Ciencia y Tecnologia (FONCICYT), Mexico
- Direccion General de Asuntos del Personal Academico (DGAPA), Mexico
- Nationaal instituut voor subatomaire fysica (Nikhef), 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 Science and Higher Education and National Science Centre, Poland
- Ministry of Education and Scientific Research, Romania
- Institute of Atomic Physics, Romania
- Joint Institute for Nuclear Research (JINR), Ministry of Education and Science of the Russian Federation, Russia
- National Research Centre Kurchatov Institute, Russia
- Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia
- National Research Foundation of South Africa, South Africa
- Korea Institute of Science and Technology Information, South Korea
- National Research Foundation of Korea (NRF), South Korea
- Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Spain
- Ministerio de Ciencia e Innovacion, Spain
- Knut AMP
- AliceWallenberg Foundation (KAW), Sweden
- Swedish Research Council (VR), Sweden
- European Organization for Nuclear Research, Switzerland
- National Science and Technology Development Agency (NSDTA), Thailand
- Office of the Higher Education Commission under NRU project of Thailand, Thailand
- Suranaree University of Technology (SUT), Thailand
- Turkish Atomic Energy Agency (TAEK), 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), United States
- United States Department of Energy, Office of Nuclear Physics (DOE NP), United States
- Romanian National Agency for Science, Technology and Innovation, Romania
- Grants-in-Aid for Scientific Research [17H01122] Funding Source: KAKEN
- Science and Technology Facilities Council [ST/M00158X/1, 1523365, ALICE, ST/L005670/1, ST/P005438/1, ST/M001598/1, ST/N00261X/1, ST/M00340X/1, GRIDPP, ST/M001601/1, 2014 STFC Nuclear Physics CG, ST/P004598/1, ST/L005751/1, ST/J000108/1, 1657698] Funding Source: researchfish
- STFC [ST/L005670/1, ST/M001601/1, ST/J000108/1, ST/P004598/1, ST/N00261X/1, ST/M001598/1, ST/P005438/1, ST/L005751/1, 1657698, ALICE, 2014 STFC Nuclear Physics CG, ST/M00158X/1, ST/M00340X/1] Funding Source: UKRI
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In two-particle angular correlation measurements, jets give rise to a near-side peak, formed by particles associated to a higher-p(T) trigger particle. Measurements of these correlations as a function of pseudorapidity (Delta eta) and azimuthal (Delta phi) differences are used to extract the centrality and p(T) dependence of the shape of the near-side peak in the p(T) range 1 < p(T) < 8 GeV/c in Pb-Pb and pp collisions at root s(NN) = 2.76 TeV. A combined fit of the near-side peak and long-range correlations is applied to the data and the peak shape is quantified by the variance of the distributions. While the width of the peak in the Delta phi direction is almost independent of centrality, a significant broadening in the Delta eta direction is found from peripheral to central collisions. This feature is prominent for the low-p(T) region and vanishes above 4 GeV/c. The widths measured in peripheral collisions are equal to those in pp collisions in the Delta phi direction and above 3 GeV/c in the Delta eta direction. Furthermore, for the 10% most central collisions and 1 < p(T, assoc) < 2 GeV/c, 1 < p(T,trig) < 3 GeV/c, a departure from a Gaussian shape is found: a depletion develops around the center of the peak. The results are compared to A Multi-Phase Transport (AMPT) model simulation as well as other theoretical calculations indicating that the broadening and the development of the depletion are connected to the strength of radial and longitudinal flow.
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