Centre International de Formation et de Recherche Avancées en Physique

NEutrino Properties Through Use of Nuclei (NEPTUN)

"NEutrino Properties Through Use of Nuclei (NEPTUN)" Neutrinos are neutral, elementary particles that play a major role in different domains of physics, such as particle and nuclear physics, astro-physics and cosmology. Although they are the second most abundant species in the universe, they can not be easily investigated due to their very weak interaction with matter. Therefore, their fundamental properties still remain unknown, while their decipherment would lead to an important progress in knowledge with major consequences in science, technology and society. In this project “NEPTUN”, we develop new theoretical methods and advanced computational programs for the investigation of the properties of neutrinos produced in the beta decay (BD) and neutrinoless double-beta decay (NDBD). The overall objectives of the project are: i) formation of a strong internationally recognized research group for providing advanced theory tools and analyses to the theoretical and experimental nuclear-, particle- and neutrino physics communities; ii) supporting the national fundamental research at frontier, in leading scientific fields; iii) offering young researcherss training and research programs, within a highly internationally competitive environment. The specific objectives of the project aim to make a significant contribution to the clarification of the following hot topics: i) effective value of the axial-vector coupling strength gA; ii) existence of sterile neutrinos; iii) reliable nuclear matrix elements (NMEs) for NDBD; iv) neutrino masses from BD and NDBD. The project is based on the joint expertise, internationally recognized, of the Jyvaskyla, Bucharest and Michigan theory groups, complemented by direct, close collaborations with important experimental research groups. Also, this project is planned as a starting point of a long-term international collaboration sustenable including through applications to other EU programs.  
PROJECT DURATION (MONTHS) 36
TOTAL FUNDING REQUESTED (LEI) 7.000.000,00
TOTAL FUNDING REQUESTED (EUR) 1.418.668,00
  1. Jouni Suhonen – profesor (University of Jyväskylä – Finlanda, CIFRA) – project director
  2. Sabin Stoica – CS1 (CIFRA) – project manager
  3. Mihai Horoi (Central Michigan University – SUA)
  4. Andrei Neacsu – CS2 (CIFRA)
  5. Jenni Kotila (University of Jyväskylä)
  6. Stefan Ghinescu – postdoc (CIFRA)
  7. Ovidiu Nitescu – phd. student/postdoc (CIFRA)
  8. Vasile-Alin Sevestrean – phd. student (CIFRA)
  9. Robert Poenaru – phd. student (CIFRA)

Articles:

  1. Sevestrean, V.-A.; Stoica, S. Theoretical Advances in Beta and Double-Beta Decay. Symmetry 2024, 16, 390. https://doi.org/10.3390/sym16040390
  2. Ge, Z., Eronen, T., Ramalho, M. et al. Direct high-precision measurement of the mass difference of As–Se related to neutrino mass determination. Eur. Phys. J. A 60, 104 (2024) https://doi.org/10.1140/epja/s10050-024-01317-3
  3.  Ramalho M, Suhonen J, Neacsu A and Stoica S (2024) Spectral shapes of second-forbidden single-transition nonunique β decays assessed using the nuclear shell model. Front. Phys. 12:1455778. doi: 10.3389/fphy.2024.1455778
  4. O. Niţescu, St. Ghinescu, Vasile-Alin Sevestrean, M. Horoi, F. Šimkovic and S. Stoica, Theoretical analysis and predictions for the double electron capture of 124Xe, arXiv: 2402.13784 (2024)-accepted for publication in J. Phys. G 2024.

Oral presentations at conferences:

  1. Workshop on the Standard Model and Beyond – Corfu 2024:

    1. Sabin Stoica – “Weak interaction processes and beyond SM physics”

  2. Physics Beyond the Standard Model in Leptonic & Hadronic Processes and Relevant Computing Tools – Atena 2024:

    1. Mihai Horoi – “Recent progress with the nuclear matrix elements for double beta decay”

    1. Sabin Stoica – “Current topics in weak interaction processes”

    1. Jouni Suhonen – “Nuclear muon capture, a perfect probe of neutrinoless double beta decay”

    1. Andrei Neacsu – “Shell model calculations for the neutrinoless double-beta decay of 82Se”

    1. Vasile-Alin Sevestrean – “Calculations for neutrino mass determination using atomic electron capture

  3. NuMass – Determination of the absolute electron (anti)-neutrino mass – Genova 2024:

    1. Ovidiu Nitescu – “Atomic corrections for the beta decay of neutrino mass measurement candidates”

  4. MEDEX (Matrix Elements for the Double beta decay EXperiments) – Prague 2023:
    1) Sabin Stoica – “New results from beta and double-beta decays studies”
    2) Neacsu Andrei –  “Shell model neutrinoless double-beta decay NME of Xe within a statistical approach”
    3) Jouni Suhonen – “Ordinary muon capture, a perfect probe of the decay”
    4) Nitescu Ovidiu – “Atomic exchange correction for allowed decay and decay”

    5) Sevestrean Vasile-Alin – “Improved calculations for atomic electron capture ratios”

 

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