TNPI2025 - XX Conference on Theoretical Nuclear Physics in Italy

Session

Short contributions (VII)

3 Oct 2025, 11:10

Il Palazzone (Cortona)

16. Application of nuclear covariance matrix in nuclear TMD effects

Yiyu Zhou (University of Turin)

03/10/2025, 11:10

In this work, we investigate the nuclear modification effects in transverse momentum dependent
(TMD) observables by implementing a nuclear covariance matrix in the treatment of theoretical uncertainties. Global QCD analysis is performed with the aforementioned nuclear covariance matrix to verify its equivalence with the traditional approach of including a nuclear correction parameter. The...

34. Few-nucleon systems within EFT-pionless framework

Alessandro Grassi (Istituto Nazionale di Fisica Nucleare)

03/10/2025, 11:30

Scattering observables in few-nucleon systems are explored using the interaction model and theoretical framework established in Phys. Rev. C 103, 054003 (2021). By refining the low-energy constants of the potential to accurately reproduce key two-body scattering observables, we obtain fresh insights and updated predictions for the observables under consideration. Moreover, since the...

35. The hyperon-nucleon interaction in low-energy effective field theory

Margherita Sagina (Istituto Nazionale di Fisica Nucleare)

03/10/2025, 11:50

In recent years, there has been a notable interest in investigating hypernuclear systems, which provide a unique laboratory for studying strong interactions in the strange quark sector. One of the main applications is related to the so-called "hyperon puzzle" in neutron stars, where theoretical models including hyperons predict maximum masses of $\sim 1.5 \, M_{\odot}$ or less, in conflict...

10. $^{12}$C and $^{16}$O $\alpha$-particle systems and the triple-$\alpha$ reaction within near-zero range Effective Field Theory

Elena Filandri (ECT*)

03/10/2025, 12:10

We investigate the structure of $^{12}$C and $^{16}$O within an ab-initio Hyperspherical Harmonics framework using short-range Effective Field Theory-inspired interactions. For $^{12}$C, ground and excited states are accurately reproduced with a two-body potential plus a fine-tuned three-body force, while $^{16}$O requires a genuine four-body interaction to match experiment. We also analyze...

37. The photodisintegration cross section of ${}^{9}$Be and ${}^{12}$C within Cluster Effective Field Theory

Ylenia Capitani (Università del Salento and INFN-Lecce)

03/10/2025, 12:30

The photodisintegration processes $\gamma + {}^{12}\mathrm{C} \to \alpha + \alpha + \alpha$ and $\gamma + {}^{9}\mathrm{Be} \to \alpha + \alpha + n$ are reactions of astrophysical relevance, both representing a path to carbon nucleosynthesis. Here we present a thorough study of the latter process [1], which is relevant in specific astrophysical environments involving a large number of...