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Measurement of the relative yields of ψ(2S) to ψ(1S) mesons produced at forward and backward rapidity in p+p, p+Al, p+Au, and He 3 +Au collisions at s NN =200 GeV

Adare, A (author)
University of Colorado
Aidala, C. (author)
University of Michigan
Ajitanand, N. N. (author)
Stony Brook University
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Akiba, Y. (author)
Riken BNL Research Center,RIKEN Nishina Center for Accelerator-Based Science
Alfred, M. (author)
Howard University
Andrieux, V. (author)
University of Michigan
Aoki, K. (author)
High Energy Accelerator Research Organization, Tsukuba,RIKEN Nishina Center for Accelerator-Based Science
Apadula, N (author)
Iowa State University,Stony Brook University
Asano, H. (author)
RIKEN Nishina Center for Accelerator-Based Science,Kyoto University
Ayuso, Carmen (author)
University of Michigan
Azmoun, B. (author)
Brookhaven National Laboratory
Babintsev, V. (author)
Institute for High Energy Physics, Russia
Bai, M (author)
Brookhaven National Laboratory
Bandara, N. S. (author)
University of Massachusetts
Bannier, B (author)
Stony Brook University
Barish, K N (author)
University of California, Riverside
Bathe, S (author)
Baruch College,Riken BNL Research Center
Bazilevsky, A (author)
Brookhaven National Laboratory
Beaumier, M. (author)
University of California, Riverside
Beckman, S. (author)
University of Colorado
Belmont, R (author)
University of Michigan,University of Colorado
Berdnikov, A (author)
St. Petersburg State Polytechnical University
Berdnikov, Y. (author)
St. Petersburg State Polytechnical University
Blau, D. S. (author)
Russian Research Center 'Kurchatov Institute'
Boer, M. (author)
Los Alamos National Laboratory
Bok, J S (author)
New Mexico State University
Bownes, E. K. (author)
Muhlenberg College
Boyle, K (author)
Riken BNL Research Center
Brooks, M L (author)
Los Alamos National Laboratory
Bryslawskyj, J. (author)
Baruch College,University of California, Riverside
Bumazhnov, V. (author)
Institute for High Energy Physics, Russia
Butler, Christopher C. (author)
Georgia State University
Campbell, S. (author)
Iowa State University,Columbia University
Canoa Roman, V. (author)
Stony Brook University
Cervantes, R. (author)
Stony Brook University
Chen, C. H. (author)
Riken BNL Research Center
Chi, C Y (author)
Columbia University
Chiu, M (author)
Brookhaven National Laboratory
Choi, I J (author)
University of Illinois at Urbana-Champaign
Choi, J B (author)
Chonbuk National University
Chujo, T. (author)
University of Tsukuba
Citron, Z. (author)
Weizmann Institute of Science Israel
Connors, M. (author)
Riken BNL Research Center,Georgia State University
Cronin, N. (author)
Muhlenberg College,Stony Brook University
Csanád, M (author)
Eötvös Loránd University
Csörgo, T. (author)
Károly Róberts University College,Hungarian Academy of Sciences
Danley, T. W. (author)
Ohio University
Datta, A. (author)
University of New Mexico
Oskarsson, A. (author)
Lund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
Silvermyr, D. (author)
Lund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Oak Ridge National Laboratory
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 (creator_code:org_t)
 
2017
2017
English.
In: Physical Review C: covering nuclear physics. - 2469-9985. ; 95:3
Related links:
http://dx.doi.org/10...
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https://lup.lub.lu.s...
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The PHENIX Collaboration has measured the ratio of the yields of ψ(2S) to ψ(1S) mesons produced in p+p, p+Al, p+Au, and He3+Au collisions at sNN=200 GeV over the forward and backward rapidity intervals 1.2<|y|<2.2. We find that the ratio in p+p collisions is consistent with measurements at other collision energies. In collisions with nuclei, we find that in the forward (p-going or He3-going) direction, the relative yield of ψ(2S) mesons to ψ(1S) mesons is consistent with the value measured in p+p collisions. However, in the backward (nucleus-going) direction, the ψ(2S) meson is preferentially suppressed by a factor of ∼2. This suppression is attributed in some models to the breakup of the weakly bound ψ(2S) meson through final-state interactions with comoving particles, which have a higher density in the nucleus-going direction. These breakup effects may compete with color screening in a deconfined quark-gluon plasma to produce sequential suppression of excited quarkonia states.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

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