The Shape of the Correlation Function

J. Cimerman; B. Tomášik; Ch Plumberg

doi:10.1134/S1063779620030077

The Shape of the Correlation Function

J. Cimerman, B. Tomášik, Ch Plumberg

Research output: Contribution to journal › Article › peer-review

Abstract

The correlation function measured in ultrarelativistic nuclear collisions is non-Gaussian. By making use of models we discuss and assess how much various effects can influence its shape. In particular, we focus on the parametrisations expressed with the help of Lévy-stable distributions. We show that the Lévy index may deviate substantially from 2 due to non-critical effects such as non-spherical shape, resonance decays, event-by-event fluctuations and functional dependence on Q_inv or similar.

Original language	English
Pages (from-to)	282-287
Number of pages	6
Journal	Physics of Particles and Nuclei
Volume	51
Issue number	3
DOIs	https://doi.org/10.1134/S1063779620030077
Publication status	Published - 2020 May 20

Subject classification (UKÄ)

Subatomic Physics

Free keywords

correlation function
Lévy stable parametrisation
non-critical effects

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10.1134/S1063779620030077

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abstract = "The correlation function measured in ultrarelativistic nuclear collisions is non-Gaussian. By making use of models we discuss and assess how much various effects can influence its shape. In particular, we focus on the parametrisations expressed with the help of L{\'e}vy-stable distributions. We show that the L{\'e}vy index may deviate substantially from 2 due to non-critical effects such as non-spherical shape, resonance decays, event-by-event fluctuations and functional dependence on Qinv or similar.",

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AB - The correlation function measured in ultrarelativistic nuclear collisions is non-Gaussian. By making use of models we discuss and assess how much various effects can influence its shape. In particular, we focus on the parametrisations expressed with the help of Lévy-stable distributions. We show that the Lévy index may deviate substantially from 2 due to non-critical effects such as non-spherical shape, resonance decays, event-by-event fluctuations and functional dependence on Qinv or similar.

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KW - non-critical effects

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ER -

The Shape of the Correlation Function

Abstract

Subject classification (UKÄ)

Free keywords

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Averaging and the shape of the correlation function

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