Abstract
The high-statistics and high-quality data samples in pp, p–Pb and Pb–Pb collisions at various collision energies collected by the ALICE Collaboration, and the excellent tracking and particle identification capabilities of the Inner Tracking System, the Time-Projection Chamber and the Time-of-Flight detector allow for the detection of rarely produced light (anti-)(hyper-)nuclei. The first (anti-)triton p T spectra in Pb–Pb at the LHC as well as the first (anti-)4He p T spectra are presented. Moreover, the p T-integrated production yield ratios of deuteron over proton as well as 3He and triton over proton as a function of charged-particle multiplicity are shown. In addition coalescence parameters B 2 and B 3 as a function of p T/A and charge particle multiplicity for several collision systems and energies are discussed. Furthermore, light-nuclei radial and elliptic flow are presented and compared to the flow of lighter particles. These various results are compared with statistical hadronization and coalescence model predictions to provide insight in the production mechanism of light (anti-)nuclei in heavy-ion collisions.
Highlights
The high-statistics and high-quality data samples in pp, p–Pb and Pb–Pb collisions at various collision energies collected by the ALICE Collaboration, and the excellent tracking and particle identification capabilities of the Inner Tracking System, the Time-Projection Chamber and the Time-of-Flight detector allow for the detection of rarely produced light(hyper-)nuclei
Light-nuclei radial and elliptic flow are presented and compared to the flow of lighter particles. These various results are compared with statistical hadronization and coalescence model predictions to provide insight in the production mechanism of lightnuclei in heavy-ion collisions
In ultrarelativistic heavy-ion collisions at the Large Hadron Collider (LHC) a state of deconfined strongly interacting matter consisting of quarks and gluons, called the quark-gluon plasma (QGP), is created
Summary
In ultrarelativistic heavy-ion collisions at the Large Hadron Collider (LHC) a state of deconfined strongly interacting matter consisting of quarks and gluons, called the quark-gluon plasma (QGP), is created. The abundances of different particle species after hadronization provide information about their production mechanism. Among these particles, light (anti-)(hyper-)nuclei are of special interest since they are loosely bound objects. Light (anti-)(hyper-)nuclei are of special interest since they are loosely bound objects Their binding energies are very small compared to the chemical and kinetic freeze-out temperatures and their production mechanism is still not completely understood. In heavy-ion collisions, the system can be described by a grand-canonical ensemble where the free parameters are the average particle number N , the volume V and the temperature T at chemical freeze-out.
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