The NCBJ group in Warsaw has announced a PhD position focused on studies of semileptonic decays of hyperons
and charmed baryons. The project offers with opportunities to be involved in both data analyses and phenomenological research. The project will be conducted in close collaboration with IFJ-PAN and Jagiellonian University within CBM collaboration at FAIR. The PhD studies are planned to start in October 2026, and we strongly encourage Master's students to apply.

Further details can be found in https://inspirehep.net/jobs/3143823.

The main goal of the High Acceptance Di-Electron Spectrometer (HADES) experiments at GSI, Darmstadt is the study of the hadronic matter at high net baryon densities up to 3x higher than ground state and moderate temperatures (T < 80 MeV), i.e. in conditions close to neutron star mergers. A series of observables (e+e- and strangeness production, flow, fluctuations of conserved quantities, correlations,… ) are measured in heavy-ion collisions in the 1-2 GeV/nucleon  energy range. In addition, proton and pion induced reactions on nuclei are scrutinized to study scattering and absorption of hadrons in normal nuclear matter and elementary reactions (proton-proton, deuterium-proton, pion-proton) provide production cross sections and hadron properties (baryon transition electromagnetic form factors, branching ratios,,…) which on the one hand advance the hadron structure and hadron interaction knowledge and on the other hand, bring inputs for the interpretation of medium effects.

The activities of the HADES team at IJCLab cover different aspects of the HADES scientific programme.

Concerning heavy ion reactions, our focus is on analyses of recent Au-Au, Ag+Ag or C+C measurements at various energies, using the dilepton probe, which is best suited to characterize the hadronic matter (temperature of the fire ball, contribution of rho meson and baryon resonances,…). This study is based on multidifferential analyses, including invariant mass, transverse momentum and rapidity observables, but also polarization, extracted from the lepton angular distributions.   In addition, a study of the correlated (pion, proton) pairs is envisaged in order to extract in-medium properties of the Delta(1232) resonance, which is copiously produced in the HADES energy range.

We also investigating hadronic channels in the pi-+C reaction at center os mass energies around 1.49 GeV/c^2. The objective is to test the capacity of hadronic models to describe pion scattering and absorption effects in normal nuclear matter. Such model validations are important to reduce uncertainties for the interpretation of medium effects in heavy-ion reactions, but also for the reconstruction of neutrino energy in long-based line experiments

On the hadronic physics side, our current analyses are mainly devoted to the analysis of the p+p reaction at 4.5 GeV, using the e+e- and K+K- channel to obtain information on different meson and baryon resonance production.

We are also involved in some phenomenological aspects of heavy-ion or elementary reactions, related to polarization, electromagnetic form factors or thermal models.

Salary and working conditions.

The interested candidates are invited to contact us (Piotr Salabura) in order to discuss a possible project, in line with the HADES activities at IJCLab, as shortly described above.

The FAIR Fellow and Associate Programme aims at attracting the brightest scientists in the field, by offering individuals unique opportunities for scientific and technological work at FAIR for a limited period. FAIR Fellows are the most prestigious early-career positions available at FAIR. Established scientists may be offered a rewarding research/development stay at FAIR as a FAIR Associate. 
FAIR is an international accelerator facility, which is currently being built in Darmstadt. FAIR is progressively being taken into operation and offers unique research opportunities for nuclear structure, nuclear astrophysics and nuclear reaction studies, hadronic physics, atomic and quantum physics, biophysics, plasma physics, materials research, accelerator science and IT. FAIR research is organized in four pillars:

• The compressed baryonic matter collaborations in the CBM pillar study QCD matter and the QCD phase diagram at highest baryon densities with heavy ion reaction which is complementary to LHC experiments focusing on very low baryon densities
• NUSTAR research concentrates on nuclear structure and nuclear astrophysics investigations with nuclei far off stability.
• APPA is devoted to precision stud-ies on fundamental interactions and symmetries employing highly charged ions; high density plasma physics; atomic and material science studies; radio-biological investigations and other application-oriented studies.
• And QCD studies with cooled anti-protons are the goal of the PANDA collaboration. 

There are two types of support possible:

• Fellowships: Addresses early-career scientists, which seek a time-limited employment at FAIR (2 year with the possibility to extend for 1 additional year). Up to 5 fellowships per year are expected to be granted. 
• Associates: Addresses mid-career and senior scientists with a position at a university or an institute in a partner country, who intend spending a prolonged period at FAIR (between 3 months and 1 year). The number of grants will depend on the excellence of applicants.

Candidates will be required to work on research topics relevant for FAIR. The programme offers successful candidates the opportunity to follow and contribute to experimental or theoretical research projects at FAIR.

All details together with the application form are on the web page

https://fair-center.eu/career/fair-fellow-and-associate-program