Abstract
If quark-gluon plasma (QGP)–like medium is created in -Pb collisions at extremely high collision energies, charm quarks that move in the medium can hadronize by capturing the comoving light quark(s) or antiquark(s) to form the charm hadrons. Using light quark spectra extracted from the experimental data of light-flavor hadrons and a charm quark spectrum that is consistent with perturbative QCD calculations, the central-rapidity data of spectra and the spectrum ratios for mesons in the low- range ( GeV/) in minimum-bias -Pb collisions at TeV are well described by the quark combination mechanism in equal-velocity combination approximation. The ratio in quark combination mechanism exhibits the typical increase-peak-decrease behavior as the function of , and the shape of the ratio for GeV/ is in agreement with the data of the ALICE Collaboration in central rapidity region and the preliminary data of the LHCb Collaboration in forward rapidity region . The global production of single-charm baryons is quantified using the data and the possible enhancement (relative to light flavor baryons) is discussed. The spectra of in minimum-bias events and those of single-charm hadrons in high-multiplicity event classes are predicted, which serves as the further test of the possible change of the hadronization characteristic for low- charm quarks in the small system created in -Pb collisions at Large Hadron Collider energies.
1 More- Received 29 December 2017
- Revised 23 May 2018
DOI:https://doi.org/10.1103/PhysRevC.97.064915
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society