| Issue |
EPJ Web Conf.
Volume 177, 2018
The XXI International Scientific Conference of Young Scientists and Specialists (AYSS-2017)
|
|
|---|---|---|
| Article Number | 04008 | |
| Number of page(s) | 5 | |
| Section | High Energy Physics | |
| DOI | https://doi.org/10.1051/epjconf/201817704008 | |
| Published online | 18 April 2018 | |
https://doi.org/10.1051/epjconf/201817704008
Studying the strong interaction with baryon-(anti)baryon femtoscopy in Pb-Pb collisions measured by ALICE
1
Warsaw University of Technology
2
CERN
* e-mail: jeremi.niedziela@cern.ch
Published online: 18 April 2018
The shape of the baryon-(anti)baryon femtoscopic correlation function is influenced by the size of the emission source, strong and Coulomb interactions and Quantum Statistics. Another factor introducing additional correlation structures is related to the residual correlations, which are related to the fact that baryons may come from decays of heavier particles. The correlation function of a given pair of baryons (for example pp) is closely connected with correlation functions of other particles (such as pΛ). Analysing correlation functions of multiple baryon pairs simultaneously can further constrain measured strong scattering parameters. A newly developed fitting procedure allowing for a combined fit of several correlation functions is presented. The procedure was applied to 2.76 TeV and 5.02 TeV Pb-Pb data measured by ALICE. The analysis was performed for all combinations of (anti)protons and (anti)lambdas for different collision centralities. Measured strong interaction parameters for pΛ, ΛΛ and heavier baryon-antibaryon (bb) pairs are shown and possible underlying physical processes are discussed.
© The Authors, published by EDP Sciences, 2018
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. (http://creativecommons.org/licenses/by/4.0/).
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