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Frontiers and Careers in Photonuclear Physics 2025

→ Europe/Athens
Coral Beach Hotel

Coral Beach Hotel

Paphos, Cyprus
Aleksandr Pustyntsev (Johannes Gutenberg University of Mainz), Abhyuday Sharda (University of Tennessee)
Description

The Frontiers and Careers (F&C) is a workshop for PhD students and postdoctoral researchers, which precedes the Electromagnetic Interactions with Nucleons and Nuclei (EINN).

The 2025 F&C will continue to provide young researches in the field of nuclear and hadronic physics a place to discuss and present their work, explore career prospects, and make professional connections, all with the express purpose of preparing themselves for their future careers. 

Limited financial support is available for selected participants. All students are also encouraged to sumbit a talk on their research.

 

The main event page: https://2025.einnconference.org/

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  • Sunday 26 October
    • 09:30 → 10:00
      Welcome
    • 10:00 → 11:00
      Discussion with Professionals: Vira Bondar - Inspiring Teaching for Life
      careers_niccolai_EINN2025.pdf
      EINN PhD Employability Skills Oct 2025.pptx
      EINN-shared-Andreas Trabesinger.pdf
      Ispiring-teaching-Bondar-sent.pdf
      Pitching and Storytelling primer presentation - external.pdf
    • 11:00 → 11:30
      Coffee Break 30m
    • 11:30 → 12:30
      Discussion with Professionals: Kirsten Williamson - Employability Skills for Academia Workers
      careers_niccolai_EINN2025.pdf
      EINN PhD Employability Skills Oct 2025.pptx
      EINN-shared-Andreas Trabesinger.pdf
      Ispiring-teaching-Bondar-sent.pdf
      Pitching and Storytelling primer presentation - external.pdf
    • 12:45 → 13:45
      Lunch 1h
    • 14:00 → 14:48
      Research Talks: Students and PostDocs
      • 14:00
        Cornelis Mommers 12m
      • 14:12
        Syed Muhammad Ali Hassan 12m
      • 14:24
        Stylianos Gregoriou 12m
      • 14:36
        Joshua Miller 12m
    • 15:00 → 15:48
      Research Talks: Students and Postdocs
      • 15:00
        Bhavna Prasad 12m
      • 15:12
        Joseph Delmar 12m
      • 15:24
        Matteo Ronchi 12m

        Subtracted dispersion relations for Virtual Compton Scattering off the proton” Abstract: "In this work, we propose the formalism of subtracted dispersion relations for virtual Compton scattering (VCS) off a proton target as a tool for extracting generalized polarizabilities (GPs) of the proton. This approach offers advantages over the one based on unsubtracted dispersion relations used so far in interpreting the data, particularly in reducing the model dependence. In this framework, the GPs appear as input parameters which can be determined by a direct fit to the experimental data for VCS. To achieve this improvement, we evaluate the dispersion integrals in the momentum transfer $t$. To evaluate these integrals on the positive values of $t$ (right-hand cut), the unitarity relation in the $t$-channel has been used by saturating it with the contribution of two-pion intermediate states. This has been done using recently available data on the $\gamma \gamma^{*} \to \pi \pi$ and $\pi \pi \to N \bar{N}$ processes. On the other hand, to evaluate the integral on the negative values of $t$ (left-hand cut), we approximate the left-hand cut discontinuity by the spectral function for the $\Delta(1232)$-resonance excitation in $s$- and $u$-channel for the VCS process. We then present first results for VCS observables obtained within this framework

      • 15:36
        Timon Esser 12m

        Proton leading scalar and spin polarisabilities from proton Compton scattering data Timon Esser, Franziska Hagelstein, and Vadim Lensky We present the results of a partial wave analysis of the global real Compton scattering (RCS) database, extracting the leading scalar and spin polarisabilities of the proton. Exploring the nucleon using electromagnetic probes reveals a fine and intricate interplay between its various structural properties. As an example, the nucleon polarisabilities encode the two-photon response, such as measured in RCS [1, 2]. On the other hand, their precise knowledge is very important for the analysis of atomic spectra, especially in muonic atoms [3], which serves to constrain the details of the nucleon charge distribution such as the charge radius. The polarisabilities are introduced as the coefficients in the low-energy expansion (LEX) of the RCS amplitudes, and can, in principle, be extracted using the LEX to analyse the RCS data [1, 4]. However, the energies where quality experimental data are available are too high to use the LEX for an analysis, forcing one to use a more sophisticated framework such as effective field theories [5, 6], disperson relations [7], or partial wave analysis [8]. We use the latter framework here, include the most recent RCS data from MAMI [9] and HIGS [10], and introduce a few further modifications in the formalism. The results of our refined analysis are presented in this contribution. [1] D. Babusci et al. In: Phys. Rev. C 58 (1998). [2] H. W. Griesshammer et al. In: Prog. Part. Nucl. Phys. 67 (2012). [3] B. R. Holstein et al. In: Phys. Rev. C 61 (2000). [4] N. Krupina et al. In: Phys. Lett. B 782 (2018). [5] N. Krupina et al. In: Phys. Rev. Lett. 110.26 (2013). [6] V. Lensky et al. In: Phys. Rev. C 89.3 (2014). [7] X. Li et al. In: Phys. Rev. Lett. 128 (2022). [8] E. Mornacchi et al. In: Phys. Rev. Lett. 128.13 (2022). [9] E. Mornacchi et al. In: Phys. Rev. Lett. 129.10 (2022). [10] K. Pachucki et al. In: Rev. Mod. Phys. 96.1 (2024)

    • 15:50 → 16:20
      Coffee Break 30m
    • 16:20 → 17:20
      Discussion with Professionals: Phillips Rhys - How to Communicate My Research
      careers_niccolai_EINN2025.pdf
      EINN PhD Employability Skills Oct 2025.pptx
      EINN-shared-Andreas Trabesinger.pdf
      Ispiring-teaching-Bondar-sent.pdf
      Pitching and Storytelling primer presentation - external.pdf
    • 17:45 → 19:45
      Workshop Dinner 2h
  • Monday 27 October
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