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Averaging and the shape of the correlation function

Tomášik, Boris ; Cimerman, Jakub and Plumberg, Christopher LU (2019) In Universe 5(6).
Abstract

A brief pedagogical introduction to correlation femtoscopy is given. We then focus on the shape of the correlation function and discuss the possible reasons for its departure from the Gaussian form and better reproduction with a Lévy stable distribution. With the help of Monte Carlo simulations based on asymmetric extension of the Blast-Wave model with resonances we demonstrate possible influence of averaging over many events and integrating over wide momentum bins on the shape of the correlation function. We also show that the shape is strongly influenced by the use of the one-dimensional parametrisation in the qinv variable.

Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Correlation femtoscopy, Event-by-event fluctuations, Heavy-ion collisions, Lévy stable parametrisation
in
Universe
volume
5
issue
6
article number
148
publisher
MDPI AG
external identifiers
  • scopus:85067652195
ISSN
2218-1997
DOI
10.3390/universe5060148
language
English
LU publication?
yes
id
730ee140-66f4-4efb-adef-fd042151b2d6
date added to LUP
2019-07-05 13:30:05
date last changed
2024-04-16 16:44:31
@article{730ee140-66f4-4efb-adef-fd042151b2d6,
  abstract     = {{<p>A brief pedagogical introduction to correlation femtoscopy is given. We then focus on the shape of the correlation function and discuss the possible reasons for its departure from the Gaussian form and better reproduction with a Lévy stable distribution. With the help of Monte Carlo simulations based on asymmetric extension of the Blast-Wave model with resonances we demonstrate possible influence of averaging over many events and integrating over wide momentum bins on the shape of the correlation function. We also show that the shape is strongly influenced by the use of the one-dimensional parametrisation in the q<sub>inv</sub> variable.</p>}},
  author       = {{Tomášik, Boris and Cimerman, Jakub and Plumberg, Christopher}},
  issn         = {{2218-1997}},
  keywords     = {{Correlation femtoscopy; Event-by-event fluctuations; Heavy-ion collisions; Lévy stable parametrisation}},
  language     = {{eng}},
  number       = {{6}},
  publisher    = {{MDPI AG}},
  series       = {{Universe}},
  title        = {{Averaging and the shape of the correlation function}},
  url          = {{http://dx.doi.org/10.3390/universe5060148}},
  doi          = {{10.3390/universe5060148}},
  volume       = {{5}},
  year         = {{2019}},
}