Fixed particle number constraint in a simple model of a thermal expanding system and $pp$ collisions at the LHC
Abstract
Twoboson momentum correlations at fixed particle number constraint are studied in a simple analytically solvable model of a thermal expanding system. We show that the increase of expansion rate, as well as increase of particle multiplicity, lead to suppression of the BoseEinstein momentum correlations due to partial coherence of the groundstate contribution to particle momentum spectra. The relations of these findings to the multiplicitydependent measurements of the BoseEinstein momentum correlations in highmultiplicity $p+p$ collision events at the LHC are discussed.
 Publication:

arXiv eprints
 Pub Date:
 October 2021
 arXiv:
 arXiv:2110.06824
 Bibcode:
 2021arXiv211006824A
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Experiment;
 Nuclear Experiment;
 Nuclear Theory
 EPrint:
 20 pages, 6 figures