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Three Particle Lévy HBT from PHENIX

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Abstract

Bose–Einstein correlations of identical bosons reveal information about the space-time structure of particle emission from the sQGP formed in ultra-relativistic heavy-ion collisions. Previous measurements of two particle correlations have shown that the source can best be described by a symmetric Levy distribution. Here we report on the measurement of three-particle correlations in 0–30% centrality Au + Au collisions at \(\sqrt {{{s}_{{{\text{NN}}}}} = 200} \) GeV, and describe them with a Lévy type source. This measurement may shed light on hadron creation mechanisms beyond chaotic emission. We measure three particle correlation strength (\({{\lambda }_{3}}\)) as a function of pair transverse momentum. This parameter, combined with two-particle correlation strength \({{a}_{2}}\) may reveal the level of chaoticity and coherence in particle production.

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Funding

The author expresses gratitude for the support of Hungarian NKIFH grant no. FK-123842. B. Kurgyis was supported by the UNKP-19-2-II-ELTE-276 New National Excellence Program of the Hungarian Ministry of Human Capacities.

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Authors and Affiliations

  1. Eötvös Loránd University, H-1117, Budapest, Hungary

    B. Kurgyis

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  1. B. Kurgyis
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Correspondence to B. Kurgyis.

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Presented by B. Kurgyis at XIV Workshop on Particle Correlatios and Femtoscopy, 3–7 June 2019, Dubna Russian Federation.

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Kurgyis, B. Three Particle Lévy HBT from PHENIX. Phys. Part. Nuclei 51, 263–266 (2020). https://doi.org/10.1134/S1063779620030181

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