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Event texture search for critical fluctuations in Pb plus Pb collisions

Kopytine, ML; Schmidt-Sörensen, Janus LU and al., et (2002) In Nuclear Physics, Section A 698. p.651-654
Abstract
NA44 uses a 512 channel Si pad array covering 1.5 < eta < 3.3 to study charged hadron production in 158 A GeV Pb+Pb collisions at the CERN SPS. We apply a multiresolution analysis, based on a Discrete Wavelet Transformation, to probe the texture of particle distributions event-by-event, by simultaneous localization of features in space and scale. Scanning a broad range of multiplicities, we look for possible critical behaviour in the power spectra of local density fluctuations. The data axe compared with detailed simulations of detector response, using heavy ion event generators, and with a reference sample created via event mixing. An upper limit is set on the probability and magnitude of dynamical fluctuations.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Physics, Section A
volume
698
pages
651 - 654
publisher
Elsevier
external identifiers
  • wos:000173799700110
ISSN
0375-9474
language
English
LU publication?
yes
id
15373c37-4f16-41da-ae11-752479ae6357 (old id 343371)
date added to LUP
2007-11-07 14:41:07
date last changed
2016-04-16 04:06:14
@article{15373c37-4f16-41da-ae11-752479ae6357,
  abstract     = {NA44 uses a 512 channel Si pad array covering 1.5 &lt; eta &lt; 3.3 to study charged hadron production in 158 A GeV Pb+Pb collisions at the CERN SPS. We apply a multiresolution analysis, based on a Discrete Wavelet Transformation, to probe the texture of particle distributions event-by-event, by simultaneous localization of features in space and scale. Scanning a broad range of multiplicities, we look for possible critical behaviour in the power spectra of local density fluctuations. The data axe compared with detailed simulations of detector response, using heavy ion event generators, and with a reference sample created via event mixing. An upper limit is set on the probability and magnitude of dynamical fluctuations.},
  author       = {Kopytine, ML and Schmidt-Sörensen, Janus and al., et},
  issn         = {0375-9474},
  language     = {eng},
  pages        = {651--654},
  publisher    = {Elsevier},
  series       = {Nuclear Physics, Section A},
  title        = {Event texture search for critical fluctuations in Pb plus Pb collisions},
  volume       = {698},
  year         = {2002},
}