Published December 28, 2017
| Version v1
Journal article
Open
Femtoscopy with identified charged pions in proton-lead collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with ATLAS
Creators
- Aaboud, M.1
- Aad, G.2
- Abbott, B.3
- Abdallah, J.1
- Abdinov, O.2
- Abeloos, B.3
- Aben, R.2
- AbouZeid, O. S.3
- Abraham, N.1
- Abramowicz, H.1
- Abreu, H.2
- Abreu, R.3
- Abulaiti, Y.1
- Acharya, B.2
- Adamczyk, L.3
- Adams, D.3
- Adelman, J.1
- Adomeit, S.2
- Adye, T.4
- Affolder, A.5
- Alison, J.6
- Anderson, K. J.6
- Bryant, P.6
- Camacho Toro, R.6
- Cheng, Y.6
- Dandoy, J. R.6
- Facini, G.6
- Gardner, W.6
- Kapliy, A.6
- Kim, Y. K.6
- Krizka, K.6
- Li, H. L.6
- Merritt, F. S.6
- Miller, D. W.6
- Oreglia, M. J.6
- Pilcher, J. E.6
- Saxon, J.6
- Shochet, M. J.6
- Stark, G. H.6
- Swiatlowski, M.6
- Vukotic, I.6
- Wu, M.6
- 1. SUNY Albany
- 2. University of Alberta
- 3. TOBB University of Economics and Technology
- 4. Université Savoie Mont Blanc
- 5. Institut National de Physique Nucléaire et de Physique des Particules
- 6. University of Chicago
Description
Bose-Einstein correlations between identified charged pions are measured for $p$+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV using data recorded by the ATLAS detector at the LHC corresponding to a total integrated luminosity of $28$ $\mathrm{nb}^{-1}$. Pions are identified using ionization energy loss measured in the pixel detector. Two-particle correlation functions and the extracted source radii are presented as a function of collision centrality as well as the average transverse momentum ($k_{\mathrm{T}}$) and rapidity ($y^{\star}_{\pi\pi}$) of the pair. Pairs are selected with a rapidity $-2 < y^{\star}_{\pi\pi} < 1$ and with an average transverse momentum $0.1 < k_{\mathrm{T}} < 0.8$ GeV. The effect of jet fragmentation on the two-particle correlation function is studied, and a method using opposite-charge pair data to constrain its contributions to the measured correlations is described. The measured source sizes are substantially larger in more central collisions and are observed to decrease with increasing pair $k_{\mathrm{T}}$. A correlation of the radii with the local charged-particle density is demonstrated. The scaling of the extracted radii with the mean number of participating nucleons is also used to compare a selection of initial-geometry models. The cross-term $R_\mathrm{ol}$ is measured as a function of rapidity, and a nonzero value is observed with $5.1\sigma$ combined significance for $-1 < y^{\star}_{\pi\pi} < 1$ in the most central events.
Notes
Due to the large number of authors, only the first 20 and the University of Chicago authors are included on the above author list. Please download the article for the complete list of authors.
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PhysRevC.96.064908.pdf
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Additional details
Identifiers
- DOI
- 10.1103/physrevc.96.064908
- Other
- oai:uchicago.tind.io:11729
Funding
- National Science Foundation
- U.S. Department of Energy
- Departamento Administrativo de Ciencia, Tecnología e Innovación
- Ontario Innovation Trust
- Türkiye Atom Enerjisi Kurumu
- National Research Foundation
- Department of Science and Technology, Republic of South Africa
- Helmholtz-Gemeinschaft
- Agence Nationale de la Recherche
- Ministry of Education, Culture, Sports, Science and Technology
- Danmarks Grundforskningsfond
- German-Israeli Foundation for Scientific Research and Development
- United States-Israel Binational Science Foundation
- Canada Foundation for Innovation
- Fundação de Amparo à Pesquisa do Estado de São Paulo
- National Natural Science Foundation of China
- Bundesministerium für Bildung und Forschung
- Chinese Academy of Sciences
- Austrian Science Fund
- Ministry of Science and Technology of the People's Republic of China
- Fonds Québécois de la Recherche sur la Nature et les Technologies
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Ministerio de Economía y Competitividad
- Bundesministerium für Wissenschaft, Forschung und Wirtschaft
- General Secretariat for Research and Technology
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Joint Institute for Nuclear Research
- Israel Science Foundation
- Labex
- Max-Planck-Gesellschaft
- Javna Agencija za Raziskovalno Dejavnost RS
- Narodowym Centrum Nauki
- Ministerstwo Edukacji i Nauki
- Ministerstvo Průmyslu a Obchodu
- Shota Rustaveli National Science Foundation
- Ministry of Education and Science
- Centre National pour la Recherche Scientifique et Technique
- Natural Sciences and Engineering Research Council of Canada
- National Research Council Canada
- Science and Technology Facilities Council
- Australian Research 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
- Instituto Nazionale di Fisica Nucleare
- Seventh Framework Programme
- Horizon 2020
- British Columbia Knowledge Development Fund
- European Regional Development Fund