Postdoc positions

Euraxess; Kraków; On-site; PLN 120,000 - 180,000; Full time

Job summary

A leading academic institution in Kraków seeks a Postdoctoral Researcher to work on the HADES experiment, focusing on fundamental symmetries and interactions in physics. Candidates must have a PhD and strong programming skills in C/C++, alongside good knowledge of CERN-ROOT. The role includes data analysis, simulations, and collaboration with an international team of scientists, offering various employment benefits.

Benefits

Stable employment contract

Cooperation with renowned scientists

Access to research infrastructure

Health benefits and insurance

Additional social benefits

Qualifications

• Doctoral degree is mandatory.
• Relevant scientific achievements are required.
• Experience in nuclear or particle physics experiments at high/medium energy.

Responsibilities

• Analyze experimental data from HADES experiment.
• Conduct Monte Carlo simulations of meson production reactions.

Skills

C/C++ programming

Knowledge of CERN-ROOT

Statistical data analysis

Machine learning techniques

Education

PhD or equivalent

Job description

The Faculty of Physics, Astronomy and Applied Computer Science

Organisation/Company Jagiellonian University Department The Faculty of Physics, Astronomy and Applied Computer Science Research Field Physics Researcher Profile Recognised Researcher (R2) Positions Postdoc Positions Country Poland Application Deadline 30 Oct 2025 - 16:00 (Europe/Brussels) Type of Contract Temporary Job Status Full-time Hours Per Week 40 Offer Starting Date 1 Jan 2026 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Reference Number 6/AW/2025 Is the Job related to staff position within a Research Infrastructure? No

Offer Description

The project is funded by NCN under the SONATA-BIS 13 program, project titled: “Tests of the Standard Model predictions with rare light meson decays and the HADES@GSI spectrometer”

The main goal of the project is to study fundamental symmetries and interactions in nature, with a particular focus on CP symmetry violation and the search for effects beyond the Standard Model. The project involves the analysis of proton-proton collision data at 4.5 GeV collected using the HADES experiment, located at the GSI facility. These studies will enable testing of CP symmetry in rare meson decays, such as η(′) → e⁺e⁻π⁺π⁻, and the search for new effects, including the X(17) boson, hypothesized by the chiral resonance theory.

The project also aims to investigate the electromagnetic structure of mesons through the analysis of Dalitz decays (e.g., η(′) → e⁺e⁻γ) to test the vector dominance model (VDM). Another key aspect is understanding the mechanism of particle mass generation by studying ρ−a₁ meson mixing and the chiral mass restoration in hot and dense matter. These findings will be essential for preparing future experiments, such as CBM at the upcoming FAIR facility in Darmstadt, which continues the HADES research program.

Thanks to the high-precision data collected by the HADES spectrometer—the only system in the world capable of dilepton detection in collisions at √s = 1–4 GeV—it will be possible to gain deeper insight into fundamental processes, test the predictions of the Standard Model, and understand the mechanisms that led to the formation of the observed Universe.

The described research is conducted in close collaboration with scientists from Germany (GSI and Jülich research centers) and Sweden (Uppsala University).

Where to apply

E-mail [e-mail]

Requirements

Research Field Physics Education Level PhD or equivalent

Skills/Qualifications

The selection procedure is open for all individuals, who meet the requirements set out in Articles 113 and 116.2.3) of the Act of 20 July 2018 – Law on Higher Education and Science, and who meet the following eligibility criteria according to § 165 of the Statute of the Jagiellonian University:

• holding at least a doctoral degree;
• having relevant scientific achievements;
• Experience in experiments in the field of nuclear or particle physics at high or medium energy.
• Very good knowledge and programming skills in C/C++ (or possibly Python).
• Good knowledge of CERN-ROOT data analysis packages.
• Knowledge of statistical data analysis methods and potential application of machine learning techniques.

Good command of English (B2/C1)

The candidate will be responsible for carrying out tasks related to the analysis of experimental data collected in the HADES experiment, focusing on searches for physics beyond the Standard Model and studies of discrete symmetries, including CP symmetry in strong interactions. Additionally, the candidate's duties will include proposing, preparing, and conducting Monte Carlo simulations of meson production reactions and multi-pion background processes. The candidate will also be directly involved in future measurements and the preparation of experimental proposals using the HADES detector.

• Summary of responsibilities:
• Analysis of experimental data on rare decays of eta, omega, and eta-prime mesons.
• Leading and conducting Monte Carlo simulations of the investigated physical processes in the context of analyzed experimental data and planned future measurements.
• Participation in internal HADES group meetings and international conferences to present project results.

Collaboration with the project leader and other team members, including supervising the work of PhD students and HADES collaboration participants.

Languages ENGLISH Level Good

Research Field Physics

Additional Information

• stable employment based on an employment contract at the renowned university,
• cooperation with the interdisciplinary academic community represented by well-known scientists,
• scientific support as well as the possibility of qualifications improvement and professional development,
• access to research infrastructure,
• benefits in the form of i.a. Multisport card, sports activities, medical packages, group insurance,
• additional social benefits.

Eligibility criteria

• resume,
• personal questionnaire filled in by the candidate,
• copy of the doctoral diploma or a diploma confirming the candidate’s habilitation degree, if applicable,
• information on the candidate’s scientific, teaching and organisational achievements,
• declaration of the candidate, confirming that the Jagiellonian University will be their primary place of work, should they be selected in the selection procedure,
• statement under Article 113 of the Law on higher education and science,
• statement on acknowledging and accepting the rules and regulations concerning intellectual property management and commercialisation in force at the Jagiellonian University,
• list of publications (along with the respective publishing houses and the number of pages), if any
• reviews of the doctoral thesis and/or opinions from previous workplaces/studies,
• possible confirmation of completed foreign internships,
• list of presentations at conferences or workshops,
• confirmations of awards and other scientific achievements.

Declaration forms (no. 5-7) and personal questionnaire template (no. 2) can be obtained at:

The first stage of the selection procedure is the formal assessment of the submitted documents. Applications which meet all formal requirements are the subject of substantive assessment, during which an interview with the Candidate may be conducted (directly or via electronic communication channels), upon settling the date of the interview with the Candidate.

During the interview, the soft competencies indicated in the announcement will also be verified.

The Candidate has the right to appeal against the negative assessment by the selection board within 7 days from receiving the information about the results of the assessment.

Expected date of the selection procedure settlement: by November 15th, 2025.

All documents should be submitted in the pdf format to theaddress: [e-mail] , with the subject 'SONATA-BIS-13 PostDoc

Work Location(s)

Number of offers available 1 Company/Institute Jagiellonian University, Institute of Physics Country Poland State/Province Kraków City Kraków Postal Code 30-348 Street Łojasiewicza 11 Geofield