Présidents de session
Track3-Res&Hyp
- Benjamin Doenigus (Goethe-University Frankfurt)
Track3-Res&Hyp
- Bedangadas Mohanty (National Institute of Science Education and Research)
The production of helium and anti-helium nuclei is studied for the first time with the LHCb detector in pp collisions at $\sqrt{s} = 13 \, TeV$. The used dataset was collected between the years 2016 to 2018 and corresponds to an integrated luminosity of $L = 5.5 fb^{-1}$. The helium nuclei are identified using ionization losses in the silicon sensors of the VELO and ST detectors, alongside...
The production of (anti)hypernuclei is among the most promising probes for studying the production mechanism of light nuclei in high-energy hadronic collisions. According to coalescence, the production of $\mathrm{^{3}_{\Lambda} H}$, $\mathrm{^{4}_{\Lambda} H}$, and $\mathrm{^{4}_{\Lambda} He}$ in small colliding systems (pp and p-Pb) is extremely sensitive to their internal wave function,...
Hypernuclei, which are bound states of nuclei with at least one hyperon, serve as excellent experimental probes for studying the hyperon-nucleon ($Y$-$N$) interaction.
The A=4 mirror hypernuclei ($^{4}_{\Lambda}$H(0$^+$) and $^{4}_{\Lambda}$He(0$^+$)) is substantially tighter bound compared to the hypertriton ($^{3}_{\Lambda}$H). The existence of the spin-1 excited states...
The investigation of the quark content of hadrons has been a major focus of nonperturbative strong interaction models. The basic quark model describes baryons as composed of three quarks/antiquarks and mesons as a quark-antiquark pair. However, in the last decade, several resonances have been observed in the mass range 900-2000 MeV/$c^{2}$ (e.g. $f_{0}$(980) and $f_{1}$(1285)) that could have...
Production of $\phi(1020)$ mesons is expected to play an important role in studies of the transition from confined to deconfined matter. With its zero net strangeness and its valence structure composed predominantly of $s$ and $\bar{s}$ valence quarks, the $\phi$ meson should not be sensitive to strangeness-related effects in a purely hadronic scenario, but will behave like a doubly-strange...
Authors: S. Gläßel, V. Kireyeu, V. Voronyuk, M. Winn, J. Aichelin, G. Coci, C. Blume, and E. Bratkovskaya
We investigate the influence of the equation-of-state (EoS) of strongly interacting hadronic and partonic matter created in heavy-ion collisions on the light cluster and hypernuclei production within the Parton-Hadron-Quantum-Molecular Dynamics (PHQMD) microscopic transport approach...
High-energy nuclear collisions provide a unique site for the synthesis of both
nuclei and antinuclei at temperatures of kT ≈ 100 − 150 MeV. In these little
bangs of transient collisions, a quark-gluon plasma (QGP) of nearly vanishing
viscosity is created, which is believed to have existed in the early universe
within the first few microseconds after the Big Bang. Analyses of...
In the scope of the FAIR Phase-0 physics program, the HADES collaboration recorded 13.7 billion Ag(1.58A GeV)+Ag events. With an available energy of 2.55 GeV in binary nucleon nucleon collisions, the lightest hadrons containing strangeness are produced at their free nucleon nucleon threshold energy. Therefore, they are ideal probes to investigate medium effects due to their steep excitation...
In heavy-ion collisions, the production mechanism of hypernuclei, bound states of hyperons and nucleons, is still not fully understood. Recent theoretical model calculations show that a systematic measurement of the multiplicity dependence of yield ratios, such as $^{3}_{\Lambda}\mathrm{H}/\Lambda$ and $\mathrm{S}_{\rm 3}=(^{3}_{\Lambda}\mathrm{H}/^{3}\mathrm{He})/(\Lambda/\mathrm{p})$, can...
The production mechanism of light (anti-)nuclei in heavy-ion collisions can be either by the thermal model or the coalescence model. By studying the yields and ratios of light (anti-)nuclei, we can gain insight into their production mechanism and physical properties of the expanding system at freeze-out. Furthermore, the enhancement in the light nuclei compound ratios such as...
