Measurement of the azimuthal anisotropy for charged particle production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>2.76</mml:mn></mml:mrow></mml:math>TeV lead-lead collisions with the ATLAS detector
Abstract
Differential measurements of charged particle azimuthal anisotropy are presented for lead-lead collisions at s NN = 2.76 TeV with the ATLAS detector at the LHC, based on an integrated luminosity of approximately 8 b -1 . This anisotropy is characterized via a Fourier expansion of the distribution of charged particles in azimuthal angle relative to the reaction plane, with the coefficients v n denoting the magnitude of the anisotropy. Significant v 2 -v 6 values are obtained as a function of transverse momentum (0.5 < p T < 20 GeV), pseudorapidity (|| < 2.5), and centrality using an event plane method. The v n values for n 3 are found to vary weakly with both and centrality, and their p T dependencies are found to follow an approximate scaling relation,
Funding
- National Science Foundation
- U.S. Department of Energy
- Alexander von Humboldt-Stiftung
- Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
- Türkiye Atom Enerjisi Kurumu
- TRIUMF
- CERN
- Leverhulme Trust
- European Commission
- Department of Science and Technology, Ministry of Science and Technology, India
- Deutsche Forschungsgemeinschaft
- Ministry of Education, Culture, Sports, Science and Technology
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Danmarks Grundforskningsfond
- Fundação de Amparo à Pesquisa do Estado de São Paulo
- National Natural Science Foundation of China
- National Science Council
- Bundesministerium für Bildung und Forschung
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- General Secretariat for Research and Technology
- Lundbeckfonden
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Joint Institute for Nuclear Research
- Israel Science Foundation
- Max-Planck-Gesellschaft
- Javna Agencija za Raziskovalno Dejavnost RS
- Ministerstwo Edukacji i Nauki
- Centre National de la Recherche Scientifique
- Ministerio de Ciencia e Innovación
- Centre National pour la Recherche Scientifique et Technique
- Bundesministerium für Wissenschaft und Forschung
- State Atomic Energy Corporation ROSATOM
- Services Fédéraux des Affaires Scientifiques, Techniques et Culturelles
- H. Lundbeck A/S
- Natural Sciences and Engineering Research Council of Canada
- Science and Technology Facilities Council
- Japan Society for the Promotion of Science
- Fundação para a Ciência e a Tecnologia
- Comisión Nacional de Investigación Científica y Tecnológica
- Agencia Nacional de Promoción Científica y Tecnológica
- Institut National de Physique Nucléaire et de Physique des Particules
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