Two- and three-pion Lévy femtoscopy with PHENIX

Csanád, M.

doi:10.1088/1742-6596/1070/1/012026

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…This means that a simultaneous measurement of at least λ 2 and λ 3 in two-and three-pion correlation functions offers the possibility of investigation of coherent pion production and determination f c and p c [17,18]. The above mentioned effects underline the importance of understanding the effects that may modify the pair momentum dependence of λ n .…”

Section: Bose-einstein Correlations In High-energy Physicsmentioning

confidence: 99%

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Multi-particle quantum-statistical correlation functions in a Hubble-expanding hadron gas

Csanad,

Jakovac,

Lokos

et al. 2020

Preprint

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Quantum-statistical correlation measurements in high-energy physics represent an important tool to obtain information about the space-time structure of the particle-emitting source. There are several final state effects which may modify the measured femtoscopic correlation functions. One of these may be the interaction of the investigated particles with the expanding hadron gas, consisting of the other final state particles. This may cause the trajectories -and hence the phases -of the quantum-correlated pairs to be modified compared to free streaming. The resulting effect and could be interpreted as an Aharonov-Bohm-like phenomenon, in the sense that the possible paths of a quantum-correlated pair represent a closed loop, with an internally present field caused by the hadron gas. In this paper, the possible role of the effect in heavy-ion experiments is presented with analytical calculations and a simple numerical model. The modification of the strength of multi-particle Bose-Einstein correlation functions is investigated, and the is found that in case of sufficiently large source density, this effect may play a non-negligible role.

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Section: Bose-einstein Correlations In High-energy Physicsmentioning

confidence: 99%

“…Note furthermore that based on Eqs. ( 9)-( 10), one can define [18] an f c independent combination κ 3 :…”

Section: Bose-einstein Correlations In High-energy Physicsmentioning

confidence: 99%

Multi-particle quantum-statistical correlation functions in a Hubble-expanding hadron gas

Csanad,

Jakovac,

Lokos

et al. 2020

Preprint

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Exploring the QCD phase diagram via the collision energy dependence of multi-particle femtoscopy with PHENIX

Csanád¹

2020

J. Phys.: Conf. Ser.

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Exploration of the rich structure of the QCD phase diagram is an important topic in the RHIC heavy ion program. One of the ultimate goals of this program is to search for the critical endpoint. Investigation of the space-time structure of hadron emissions at various phase transition points using Bose-Einstein correlations of identical bosons may provide insight on the location of the critical endpoint. PHENIX has performed comprehensive measurements of the Bose-Einstein correlation in Au+Au collisions at S N N = 15 , 19, 27, 39, 62.4, and 200 GeV, where we incorporated Lévy-type source functions to describe the measured correlation functions. We put particular focus on one of the parameters of the Lévy-type source functions, the index of stability α, which is related to one of the critical exponents (the so-called correlation exponent ɳ). We have measured its collision energy and centrality dependence. We have also extended our analysis from two-particle to three-particle correlations to characterize the nature of the hadron emission source. The three particle correlations confirmed the findings of the two-particle correlations, and also provide insight on the pion production mechanism beyond the core-halo model.

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Femtoscopy with Lévy Sources from SPS through RHIC to LHC

Csanád,

Kincses

2024

Universe

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Femtoscopy is a unique tool to investigate the space-time geometry of the matter created in ultra-relativistic collisions. If the probability density distribution of hadron emission is parametrized, then the dependence of its parameters on particle momentum, collision energy, and collision geometry can be given. In recent years, several measurements came to light that indicated the adequacy of assuming a Lévy-stable shape for the mentioned distribution. In parallel, several new phenomenological developments appeared, aiding the interpretation of the experimental results or providing tools for the measurements. In this paper, we discuss important aspects of femtoscopy with Lévy sources in light of some of these advances, including phenomenological and experimental ones.

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Two- and three-pion Lévy femtoscopy with PHENIX

Cited by 3 publications

References 29 publications

Multi-particle quantum-statistical correlation functions in a Hubble-expanding hadron gas

Multi-particle quantum-statistical correlation functions in a Hubble-expanding hadron gas

Exploring the QCD phase diagram via the collision energy dependence of multi-particle femtoscopy with PHENIX

Femtoscopy with Lévy Sources from SPS through RHIC to LHC

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