Femtoscopy with Lévy Sources from SPS through RHIC to LHC

Csanád, Máté; Kincses, Dániel

doi:10.3390/universe10020054

Cited by 6 publications

(2 citation statements)

References 50 publications

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“…This is, of course, true; however, an angle-averaged nonspherical Gaussian is strikingly different from a Lévy distribution, as was demonstrated in the talks given by M. Csanád at the 52nd International Symposium on Multiparticle Dynamics and at the XVI Workshop of Particle Correlations and Femtoscopy. The details of those talks are also summarized in the same Special Issue as this paper [30]. In ref.…”

Section: Lévy-stable Source Distributionsmentioning

confidence: 98%

Pion Interferometry with Lévy-Stable Sources in sNN = 200 GeV Au + Au Collisions at STAR

Kincses

2024

Universe

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Measurements of femtoscopic correlations in high-energy heavy-ion collisions are used to unravel the space–time structure of the particle-emitting source (the quark–gluon plasma). Recent results indicate that the pion pair source exhibits a power law behavior and can be described well by a Lévy distribution. In this study, Lévy fits were applied to the measured one-dimensional two-pion correlation functions in Au + Au collisions at sNN = 200 GeV. The three extracted source parameters are the Lévy scale parameter, R, which relates to the size of the source; the correlation strength parameter, λ; and the Lévy exponent, α, which characterizes the power law tail of the source. In this paper, we report the current status of the analysis of the extracted Lévy source parameters and present their dependence on average transverse mass, mT, and on centrality.

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Section: Lévy-stable Source Distributionsmentioning

confidence: 98%

Pion Interferometry with Lévy-Stable Sources in sNN = 200 GeV Au + Au Collisions at STAR

Kincses

2024

Universe

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“…The application of Lévy stable source distributions to high-energy heavy ion physics has been recently reviewed by Csanád and Kincses in Ref. [48].…”

Section: Introductionmentioning

confidence: 99%

Simple Lévy α-Stable Model Analysis of Elastic pp and pp¯ Low-|t| Data from SPS to LHC Energies

Csörgő,

Hegyi,

Szanyi

2024

Universe

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A simple Lévy α-stable (SL) model is used to describe the data on elastic pp and pp¯ scattering at low-|t| from SPS energies up to LHC energies. The SL model is demonstrated to describe the data with a strong non-exponential feature in a statistically acceptable manner. The energy dependence of the parameters of the model is determined and analyzed. The Lévy α parameter of the model has an energy-independent value of 1.959 ± 0.002 following from the strong non-exponential behavior of the data. We strengthen the conclusion that the discrepancy between TOTEM and ATLAS elastic pp differential cross section measurements arises only in the normalization and not in the shape of the distribution of the data as a function of t. We find that the slope parameter has different values for pp and pp¯ elastic scattering at LHC energies. This may be the effect of the odderon exchange or the jump in the energy dependence of the slope parameter in the energy interval 3 GeV ≲s≲ 4 GeV.

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Exploring the Big Bang with Femtoscopy

Csanád

2024

European Review

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Exploring the fundamental constituents of the matter around us and in the Universe, as well as their interactions, is among the premier goals of physics. Investigating ultrarelativistic collisions in particle accelerators has delivered answers to these questions many times in the past decades. In this article we focus on the research aimed at recreating the matter that filled the Universe in the first microsecond after the Big Bang – but this time in collisions of heavy ions. In particular, we discuss the technique called femtoscopy, which provides us with a tool to understand the space–time structure of particle creation in heavy-ion collisions. We use Lévy-stable distributions to investigate this structure and explore its dependence on particle momentum and collision energy.

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Femtoscopy with Lévy Sources from SPS through RHIC to LHC

Cited by 6 publications

References 50 publications

Pion Interferometry with Lévy-Stable Sources in sNN = 200 GeV Au + Au Collisions at STAR

Pion Interferometry with Lévy-Stable Sources in sNN = 200 GeV Au + Au Collisions at STAR

Simple Lévy α-Stable Model Analysis of Elastic pp and pp¯ Low-|t| Data from SPS to LHC Energies

Exploring the Big Bang with Femtoscopy

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