25th European Conference on Few-Body Problems in Physics

Session

Monday Parallel Session: Few-Nucleon Systems (AudiMax)

31 Jul 2023, 16:45

AudiMax (Alte Mensa)

Conveners

Monday Parallel Session: Few-Nucleon Systems (AudiMax)

• Mantile Leslie Lekala

10. High-precision collinear laser spectroscopy of $^{12}$C$^{4+}$

Dr Phillip Imgram (IKS, KU Leuven)

31/07/2023, 16:45

Invited Talk

In the last decade, advances in ab-initio atomic structure calculations enabled the determination of the nuclear charge radius purely from laser spectroscopy measurements and related QED calculations. Especially laser spectroscopy of muonic systems achieved remarkable results in μH [1], μD [2] and μHe [3] which led to the famous proton radius puzzle and questioned the lepton universality...

142. Vector mesons and chiral perturbation theory

Tae-Sun Park (Institute for Basic Science (IBS), Center for Exotic Nuclear Studies (CENS))

31/07/2023, 17:10

Contributed Talk

We present an extended version of chiral perturbation theory that incorporates vector mesons in addition to pions and nucleons. This extension establishes a consistent framework by treating the mass of vector mesons as heavy and their associated momentum as light, thereby defining a well-defined power counting rule.

In our proposed theory, contrary to the typical vector-meson dominance...

55. Structure of resonance states in three-alpha systems

Souichi Ishikawa (Hosei University)

31/07/2023, 17:25

Contributed Talk

In many phenomena of atomic nuclei, the $\alpha$-particle (the ${}^4$He nucleus) can be considered as effective degrees of freedom. In this contribution, recent works on structures of low-energy excited (resonance) states in ${}^{12}$C nucleus in terms of $3\alpha$ model will be presented.
Continuum $3\alpha$ wave functions for angular momentum and parity states: $0^+$, $1^-$, $2^+$, and...

25. Detailed studies of 12C structure and reactions

Lorenzo Fortunato (DFA- Univ. Padova (Italy))

31/07/2023, 17:40

Contributed Talk

We have investigated both algebraic models and geometric cluster models of alpha clusters in 12C, focusing on the structure of ground state, the first excited 0+ state and the second excited 2+ state in particular
with the purpoese a establishing if the rotational bands are compatible with rigid structures or rather if they are quantum mixture of different configurations.
In a first series...

28. $S$ matrices of elastic $\alpha$-$^{12}$C scattering at low energies in cluster effective field theory

Prof. Shung-Ichi Ando (Sunmoon University)

31/07/2023, 17:55

Contributed Talk

The elastic $\alpha$-$^{12}$C scattering at low energies for $l=0,1,2,3,4,5,6$ is studied in effective field theory. We discuss the construction of the $S$ matrices of elastic $\alpha$-$^{12}$C scattering in terms of the amplitudes of sub-threshold bound and resonant states of $^{16}$O, which are calculated from the effective Lagrangian. The parameters appearing in the $S$ matrices are fitted...

159. Investigation of two-body system by using of a quasi exactly solvable method for a harmonic oscillator

Hassan Hassanabadi (Shahrood University of Technology), Jan Kriz (University of Hradec Kralove)

31/07/2023, 18:10

Contributed Talk

In this paper, we investigated the behavior of non-relativistic particles of two-body system by considering the Dunkl operator and reached two second-order differential equations about even and odd parities. We expressed the even cases and obtained the wave function in terms of the generalized Laguerre polynomials and normed constant. Also, we solved the odd term of Hamiltonian with the QES...