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(WAKA:ref) pers:(Gustafsson Hans Åke) pers:(Oskarsson Anders)
 

Search: (WAKA:ref) pers:(Gustafsson Hans Åke) pers:(Oskarsson Anders) > (2015-2019) > Lévy-stable two-pio...

  • Adare, A.University of Colorado (author)

Lévy-stable two-pion Bose-Einstein correlations in s NN =200 GeV Au+Au collisions

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • 2018

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  • LIBRIS-ID:oai:lup.lub.lu.se:fca24c40-7770-4a0d-aa16-deaa63bd653a
  • https://lup.lub.lu.se/record/fca24c40-7770-4a0d-aa16-deaa63bd653aURI
  • https://doi.org/10.1103/PhysRevC.97.064911DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We present a detailed measurement of charged two-pion correlation functions in 0-30% centrality sNN=200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter λ, the Lévy index of stability α, and the Lévy length scale parameter R as a function of average transverse mass of the pair mT. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The λ(mT) measurements indicate a decrease of the strength of the correlations at low mT. The Lévy length scale parameter R(mT) decreases with increasing mT, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability α are found to be significantly lower than the Gaussian case of α=2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition. © 2018 American Physical Society.

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  • Aidala, C.University of Michigan,Los Alamos National Laboratory (author)
  • Ajitanand, N. N.Stony Brook University (author)
  • Akiba, Y.Riken BNL Research Center,RIKEN Nishina Center for Accelerator-Based Science (author)
  • Akimoto, R.University of Tokyo (author)
  • Alexander, J JStony Brook University (author)
  • Christiansen, PeterLund 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(Swepub:lu)hep-pcs (author)
  • Gustafsson, Hans-ÅkeLund 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(Swepub:lu)kosu-hgu (author)
  • Haslum, EvaLund 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(Swepub:lu)hep-eha (author)
  • Oskarsson, AndersLund 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(Swepub:lu)kosu-aos (author)
  • Silvermyr, DavidLund 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(Swepub:lu)kosu-dsi (author)
  • Stenlund, EvertLund 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(Swepub:lu)kosu-est (author)
  • University of ColoradoUniversity of Michigan (creator_code:org_t)
  • PHENIX Collaboration

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  • In:Physical Review C97:62469-9985

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