Levy-stable two-pion Bose-Einstein correlations in root S-NN=200 GeV Au+Au collisions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10377016" target="_blank" >RIV/00216208:11320/18:10377016 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/18:00322135
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.97.064911" target="_blank" >https://doi.org/10.1103/PhysRevC.97.064911</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.97.064911" target="_blank" >10.1103/PhysRevC.97.064911</a>

Result language
angličtina
Original language name
Levy-stable two-pion Bose-Einstein correlations in root S-NN=200 GeV Au+Au collisions
Original language description
We present a detailed measurement of charged two-pion correlation functions in 0-30% centrality root= 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 Levy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter lambda, the Levy index of stability alpha, and the Levy length scale parameter R as a function of average transverse mass of the parr m(T). 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 Levy-stable source functions. The lambda(m(T)) measurements indicate a decrease of the strength of the correlations at low m(T). The Levy length scale parameter R(m(T)) decreases with increasing m(T), following a hydrodynamically predicted type of scaling behavior. The values of the Levy index of stability a are found to be significantly lower than the Gaussian case of alpha = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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