Abstract
Yield ratios of identified hadrons observed in high multiplicity and collisions at the CERN Large Hadron Collider show remarkable similarity with those in collisions, indicating some important and universal underlying dynamics in hadron production for different quark gluon final states. We use the quark combination model to explain the data of yield ratios in these three collision systems. The observed and can be reproduced simultaneously by quark combination, and these two ratios reflect the probability of baryon production at hadronization which is the same in the light sector and strange sector and is roughly constant in , and collision systems over three orders of magnitude in charged particle multiplicity. The data of , and show a hierarchy behavior relating to the strangeness content and are naturally explained by quark combination both in the saturate stage at high multiplicity and in the increase stage at moderate multiplicity. Our results suggest that the characteristic of quark combination is necessary in describing the production of hadrons in small systems created in and collisions.
- Received 21 March 2017
- Revised 28 April 2017
DOI:https://doi.org/10.1103/PhysRevC.95.064911
©2017 American Physical Society