Correlation Femtoscopy for Studying Eta Meson Production Mechanism
Abstract
The high statistics data from the pp -> ppeta reaction measurement, delivered by the COSY-11 collaboration, are now being evaluated using the correlation femtoscopy technique. This method is based on the relative momentum correlations of two emitted protons and may permit determination of the size of the reaction volume. For the very first time, we apply an intensity interferometry technique to study the mechanism of the meson production via the nucleon-nucleon interaction close to the kinematical threshold. We invented a method to determine correlation function for the ppeta system free from the physical multi-pion production background. We show the comparison of experimental results with theoretical predictions and appraise the accuracy achieved for the determination of the size of the emission source.
Keywords
Cite
@article{arxiv.nucl-ex/0603025,
title = {Correlation Femtoscopy for Studying Eta Meson Production Mechanism},
author = {P. Klaja and P. Moskal and H. -H. Adam and A. Budzanowski and E. Czerwinski and R. Czyzykiewicz and D. Gil and D. Grzonka and M. Janusz and L. Jarczyk and B. Kamys and A. Khoukaz and K. Kilian and J. Majewski and W. Migdal and W. Oelert and C. Piskor-Ignatowicz and J. Przerwa and J. Ritman and T. Rozek and R. Santo and T. Sefzick and M. Siemaszko and J. Smyrski and A. Taeschner and P. Winter and M. Wolke and P. Wuestner and Z. Zhang and W. Zipper},
journal= {arXiv preprint arXiv:nucl-ex/0603025},
year = {2009}
}
Comments
Talk presented at Eta05: Workshop on Production and Decay of eta and eta-prime Mesons, Cracow, Poland, 15-18 Sep 2005