Global Conservation Laws and Femtoscopy of Small Systems

It is important to understand, in detail, two-pion correlations measured in p+p and d+A collisions. In particular, one wishes to understand the femtoscopic correlations, in order to compare to similar measurements in heavy ion collisions. However, in the low-multiplicity final states of these system...

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Bibliographic Details
Published in:arXiv.org 2008-10
Main Authors: Chajecki, Zbigniew, Mike, Lisa
Format: Article
Language:English
Subjects:
Conservation laws
Correlation analysis
Heavy ions
Ionic collisions
Pions
Online Access:Get full text
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Summary:It is important to understand, in detail, two-pion correlations measured in p+p and d+A collisions. In particular, one wishes to understand the femtoscopic correlations, in order to compare to similar measurements in heavy ion collisions. However, in the low-multiplicity final states of these systems, global conservation laws generate significant N-body correlations which project onto the two-pion space in non-trivial ways and complicate the femtoscopic analysis. We discuss a formalism to calculate and account for these correlations in collisions dominated by a single particle species (e.g. pions). We also discuss effects on two-particle correlations between non-identical particles, the understanding of which may be important in the study of femtoscopic space-time asymmetries.
ISSN:2331-8422
DOI:10.48550/arxiv.0803.0022