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Title: Lambda-Lambda Correlation in Relativistic Heavy Ion Collisions
Authors: Morita, Kenji
Furumoto, Takenori
Ohnishi, Akira  kyouindb  KAKEN_id
Author's alias: 森田, 健司
大西, 明
Issue Date: Jun-2015
Publisher: EDP Sciences
Journal title: EPJ Web of Conferences
Volume: 97
Thesis number: 00020
Abstract: We investigate Λ − Λ correlation function in relativistic heavy ion collisions to extract their interaction. Using an expanding source model for heavy ion collisions, we disentangle effects of collective expansion and those of the interaction at low relative momenta. Then, we discuss the influence of the feed-down correction for Σ⁰ decay and indicate the possible existence of a residual correlation at high relative momenta. Consequently, the present STAR data suggest a weakly attractive interaction for the ΛΛ pairs which is represented by the scattering length, 1/a₀ < −0.8 fm⁻¹.
Description: Resonance Workshop at Catania, Catania, Italy, November 3-7, 2014
Rights: © Owned by the authors, published by EDP Sciences, 2015. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
URI: http://hdl.handle.net/2433/233190
DOI(Published Version): 10.1051/epjconf/20159700020
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