Journalartikel

Jahr der Veröffentlichung: 2018

Zeitschrift: Physical Review C

Bandnummer: 98

Heftnummer: 1

ISSN: 2469-9985

eISSN: 2469-9993

DOI Link: https://doi.org/10.1103/PhysRevC.98.014913;014913

Verlag: American Physical Society

Abstract: 
We study the hadronic effects on the cc tetraquark state by focusing on the T-cc(1(+))meson during the hadronic stage of relativistic heavy ion collisions. We evaluate the absorption cross section of the T-cc meson by pions in the quasifree approximation, and investigate the time evolution of the T-cc abundance in the hadronic medium based on the effective volume and temperature of the hadronic phase at both the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC) modeled by hydrodynamic calculations with the lattice equation of state. We probe two possible scenarios for the structure of the T-cc, where it is assumed to be either a compact multiquark state or a larger sized molecular configuration composed of DD*. Our numerical results suggest that the hadronic effects on the T-cc, production are insignificant, and its final abundance depends on the initial yield of the T-cc, produced from the quark-gluon plasma phase, which will depend on the assumed structure of the state.