The Electron-Ion Collider (EIC) stands as a groundbreaking facility to illuminate the subatomic world, particularly the structure of nuclear matter. This presentation explores the EIC's potential as a new 'pentaquark factory', enabling not only the discovery of new pentaquarks, but also the precise characterization of their properties. Its extraordinary luminosity and spin polarization...
This talk presents unprecedented correlation measurements involving Λ, Ξ, kaons and pions obtained by ALICE in pp collisions at 𝑠√
= 13 TeV. Several measurements are presented for the first time, constituting new experimental constraints on the S = −1, −2 meson-baryon interactions and the nature of exotic states. The strong interactions involving mesons and baryons with strangeness content...
Experimental data on the interaction between vector mesons and nucleons are a crucial input for understanding the pattern of in-medium chiral symmetry restoration (CSR) and dynamically generated excited N($\Delta$) states. However, accessing these interactions is hampered by the short-lived nature of the vector mesons, making traditional scattering experiments unfeasible. In recent years the...
This talk will present recent experimental findings at BESIII, encompassing three distinct studies. Firstly, the search for the production of deuterons and antideuterons in e+e- annihilation at center-of-mass energies between 4.13 and 4.70 GeV is discussed. The investigation aims to unravel the production mechanisms and properties of these light nuclei, shedding light on the dynamics of...
In this paper, we conduct a Monte Carlo simulation study to investigate the production of strange and multi-strange hadrons in high-multiplicity proton-proton collisions. Our objective is to refine and validate the hadronic interaction models crucial for air shower simulations such as EPOS, QGSJET, SIBYLL, and PYTHIA. These models play a pivotal role in predicting the propagation of extensive...
We report the latest results from the spectroscopy of deeply bound pionic Sn 121 atoms performed at RIBF, RIKEN. We have determined the binding energies and the widths of the pionic orbitals and deduced the pion-nucleus interaction with unprecedented precision. After extensive analysis, we deduced that the chiral condensate at nuclear saturation density is reduced by a factor of 60+-3% (T....
In this note we study the tensor and vector exchange contributions to the elastic reactions involving the pseudoscalar mesons π+π−, K+K−and D+D−. In the case of the tensor-exchange contributions we assume that an intermediate tensor f2(1270) is dynamically generated from the interaction of two virtual ρ mesons, with the use of a pole approximation. The results show very small contributions...
The ALICE collaboration has recently reported pi+-K_S femtoscopic correlations in pp collisions. Here we show [1] how they can be well described using existing realistic pi-K interactions obtained from a dispersive analysis of scattering data [2], containing an accurate description of the kappa/K0*(700) resonance pole.
[1] in progress: M. Albaladejo, A. Canoa, J.M. Nieves, J.R.Pelaez and...
Cusp structures in spectra represent discontinuities in the differential cross sections, which are widely observed at the thresholds of scattering channels.
In the K^- d→πΛN reaction, a cusp candidate at the ΣN threshold exists in the ΛN invariant mass spectrum.
This study investigates the shape of the spectrum at the ΣN threshold by treating the scattering process as a...
We analyze different problems related to the physics of hadrons under extreme conditions of temperature and chemical potentials. On the one hand, we show that the thermal resonances $f_0(500)$ and $K^∗_0(700)$, generated in the framework of Unitarized Chiral Perturbation Theory $\pi\pi$ and $K\pi$ scattering at finite temperature, play an essential role with respect to chiral and $U(1)_A$...
We compute the vacuum energy density as a function of the quark condensate in the interacting instanton liquid model (IILM) and examine a pattern of dynamical chiral symmetry breaking from the behavior of the vacuum energy density at the origin. This evaluation is performed by using a numerical simulation of the IILM. We find that chiral symmetry is broken in the U(1)_A anomaly assisted way in...
We study the effect of a finite volume for pion-pion scattering over energy levels and physical
observables such as the phase-shift or pion mass. The method to determine the energy levels is done
using a finite set of cubic harmonics or the matrices which represents the Irreps properly, which
expands our Inverse Amplitude Method, (as well we apply the method already in the known...
The mass of the $\eta^{\prime}$ meson is notably large compared to other members of the light pseudoscalar meson nonet. The origin of the large mass is considered to be attributed to the axial U(1) anomaly and the spontaneous breaking of chiral symmetry in the QCD vacuum. In nuclear matter, various theoretical models predict a mass reduction of $\eta^{\prime}$ meson ranging from 37 to 150...
In this work, we investigate the hadron interactions using the three-quark potential in a constituent quark model. Three-quark potentials have only been studied for simple cases because it is difficult to calculate the three-color interaction matrix and determine the radial dependence of potential. In the case of a multiquark system, the three-quark color matrix can be calculated using the...
In this study, we employ Bayesian statistical methods to analyze nucleon-nucleon scattering data within the framework of pionless effective field theory. The Bayesian analysis facilitates the quantification of uncertainties and the incorporation of prior theoretical knowledge, thereby enhancing the interpretability and reliability of the model parameters. By applying this methodology to...
The idea of studying nuclear physics directly from the degrees of freedom of the Standard Model, quarks and gluons, has been long sought in the physics community. During the last few decades, the numerical method called lattice QCD has been able to compute the simplest quantities, such as the hadron masses, directly from first principles. When trying to address multibaryon systems, more...
