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Method for high-accuracy multiplicity-correlation measurements

Gulbrandsen, K. and Sogaard, Carsten LU (2016) In Physical Review C - Nuclear Physics 93(4).
Abstract

Multiplicity-correlation measurements provide insight into the dynamics of high-energy collisions. Models describing these collisions need these correlation measurements to tune the strengths of the underlying QCD processes which influence all observables. Detectors, however, often possess limited coverage or reduced efficiency that influence correlation measurements in obscure ways. In this paper, the effects of nonuniform detection acceptance and efficiency on the measurement of multiplicity correlations between two distinct detector regions (termed forward-backward correlations) are derived. An analysis method with such effects built in is developed and subsequently verified using different event generators. The resulting method... (More)

Multiplicity-correlation measurements provide insight into the dynamics of high-energy collisions. Models describing these collisions need these correlation measurements to tune the strengths of the underlying QCD processes which influence all observables. Detectors, however, often possess limited coverage or reduced efficiency that influence correlation measurements in obscure ways. In this paper, the effects of nonuniform detection acceptance and efficiency on the measurement of multiplicity correlations between two distinct detector regions (termed forward-backward correlations) are derived. An analysis method with such effects built in is developed and subsequently verified using different event generators. The resulting method accounts for acceptance and efficiency in a model-independent manner with high accuracy, thereby shedding light on the relative contributions of the underlying processes to particle production.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C - Nuclear Physics
volume
93
issue
4
publisher
American Physical Society
external identifiers
  • Scopus:84964324783
  • WOS:000374544300008
ISSN
0556-2813
DOI
10.1103/PhysRevC.93.045208
language
English
LU publication?
yes
id
7d992e2a-51c1-48f9-9290-28f08de4b9dd
date added to LUP
2016-09-30 14:37:49
date last changed
2017-01-01 08:35:37
@article{7d992e2a-51c1-48f9-9290-28f08de4b9dd,
  abstract     = {<p>Multiplicity-correlation measurements provide insight into the dynamics of high-energy collisions. Models describing these collisions need these correlation measurements to tune the strengths of the underlying QCD processes which influence all observables. Detectors, however, often possess limited coverage or reduced efficiency that influence correlation measurements in obscure ways. In this paper, the effects of nonuniform detection acceptance and efficiency on the measurement of multiplicity correlations between two distinct detector regions (termed forward-backward correlations) are derived. An analysis method with such effects built in is developed and subsequently verified using different event generators. The resulting method accounts for acceptance and efficiency in a model-independent manner with high accuracy, thereby shedding light on the relative contributions of the underlying processes to particle production.</p>},
  articleno    = {045208},
  author       = {Gulbrandsen, K. and Sogaard, Carsten},
  issn         = {0556-2813},
  language     = {eng},
  month        = {04},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review C - Nuclear Physics},
  title        = {Method for high-accuracy multiplicity-correlation measurements},
  url          = {http://dx.doi.org/10.1103/PhysRevC.93.045208},
  volume       = {93},
  year         = {2016},
}