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Determination of Nuclear Matter Radii by Means of Microscopic Optical Potentials: The Case of $$^{78}$$ Kr Few-Body Syst. (IF 1.6) Pub Date : 2024-04-24 Matteo Vorabbi, Paolo Finelli, Carlotta Giusti
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Positronium Negative Ion Embedded in Non-ideal Classical Plasmas: Doubly Excited Singlet S States Few-Body Syst. (IF 1.6) Pub Date : 2024-04-18 Netai Das, Arijit Ghoshal, Yew Kam Ho
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Experiments of Few-Nucleon Scattering to Explore Three-Nucleon Forces Few-Body Syst. (IF 1.6) Pub Date : 2024-04-15 Kimiko Sekiguchi
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Impact of the $$\hbox {N}^4\hbox {LO}$$ Short-Range Three-Nucleon Force Components on the Nucleon-Deuteron Spin Correlation Coefficients Few-Body Syst. (IF 1.6) Pub Date : 2024-04-15 Roman Skibiński, Henryk Witała, Jacek Golak
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A New Quantization of Hadron System and Ultra-Low Energy Nuclear Fusion Few-Body Syst. (IF 1.6) Pub Date : 2024-04-13 Shinsho Oryu, Takashi Watanabe, Yasuhisa Hiratsuka, Masayuki Takeda
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Puzzles of Exotic Decay Processes Few-Body Syst. (IF 1.6) Pub Date : 2024-04-13 Alexander Volya, Vladimir Zelevinsky
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Examples and Counterexamples of Renormalizability of an EFT in the Nonperturbative Regime Few-Body Syst. (IF 1.6) Pub Date : 2024-04-12 A. M. Gasparyan, E. Epelbaum, N. Jacobi, Y. Komissarova
An important feature of an effective field theory is its renormalizability, which implies that one can apply a certain power counting to renormalized quantities and perform a systematic expansion of the calculated observables in terms of some small parameter. When nonperturbative effects become relevant, the requirement of renormalizability imposes nontrivial constraints on a choice of the effective
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Chiral Symmetry and Nuclear Interactions Few-Body Syst. (IF 1.6) Pub Date : 2024-04-10 Evgeny Epelbaum
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Approximate Solutions of Schrödinger Equation for the Generalized Cornell Plus Some Exponential Potentials Few-Body Syst. (IF 1.6) Pub Date : 2024-04-10 Amal Ladjeroud, Badredine Boudjedaa
Approximate solutions of Schrödinger equation are established, for some quasi-exactly solvable central potentials. Each potential is a sum of the generalized Cornell and an exponential potential. The radial equation is turned to the biconfluent Heun equation. The energy values are obtained explicitly. For given values of the parameters Schrödinger equation approximate eigensolutions are established
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Mass Ratio Dependence of Three-Body Resonance Lifetimes in 1D and 3D Few-Body Syst. (IF 1.6) Pub Date : 2024-04-09 Lucas Happ, Pascal Naidon, Emiko Hiyama
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The Story Around the First 4n Signal Few-Body Syst. (IF 1.6) Pub Date : 2024-04-08 F. Miguel Marqués
The GANIL campaign around the first 4n signal was very peculiar. The beginning and end were both dictated by unexpected events that, unfortunately, do not fit within the streamlined format of standard scientific publications. However, they illustrate many aspects of how basic research should work, or at least does work. Therefore, I take this opportunity to share them with those not involved in the
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Experimental Studies of the Three Nucleon System Dynamics in the Proton Induced Deuteron Breakup at 108 MeV Few-Body Syst. (IF 1.6) Pub Date : 2024-04-07
Abstract The differential cross sections for the \(^2\) H(p,pp)n reaction have been measured for more than 80 angular configurations of the outgoing protons in the range of polar angles from 13 \(^\circ \) to 33 \(^\circ \) with a proton beam at 108 MeV. Data have been collected at the first experimental run in the Cyclotron Center Bronowice (CCB) at the Institute of Nuclear Physics PAS in Cracow,
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Confinement of N-Body Systems and Non-integer Dimensions Few-Body Syst. (IF 1.6) Pub Date : 2024-04-06
Abstract The squeezing process of a three-dimensional quantum system by use of an external deformed one-body oscillator potential can also be described by the d-method, without external field and where the dimension can take non-integer values. In this work we first generalize both methods to N particles and any transition between dimensions below 3. Once this is done, the use of harmonic oscillator
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Influence of Discretization Error on the HAL QCD Baryon Forces Few-Body Syst. (IF 1.6) Pub Date : 2024-04-03
Abstract We studied influence of lattice discretization on a HAL QCD two-baryon force. We have carried out 3-flavor lattice QCD numerical calculations at a same quark mass with three different values of lattice spacing. We extracted a potential of interaction in the flavor singlet S-wave two-baryon sector, and drew out binding energy of a bound state in the sector, the H-dibaryon. It turned out that
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Discrete Scale Invariance and U(2) Family of Two-Body Contact Interactions in One Dimension Few-Body Syst. (IF 1.6) Pub Date : 2024-03-29 Satoshi Ohya
Because of the absence of indistinguishability constraint, interparticle interactions between nonidentical particles have in general much more variety than those between identical particles. In particular, it is known that there exists a U(2) family of two-body contact interactions between nonidentical particles in one spatial dimension. This paper studies breakdown of continuous scale invariance to
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The N(1440) Roper Resonance in the Nuclear Model with Explicit Mesons Few-Body Syst. (IF 1.6) Pub Date : 2024-03-28 D. V. Fedorov
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Fine-Tuning of the Quasi-Bound $$K^- pp$$ State Few-Body Syst. (IF 1.6) Pub Date : 2024-03-26
Abstract Characteristics of the quasi-bound state in the \(K^- pp\) system strongly depend on the model of antikaon–nucleon interaction and weakly—on the nucleon–nucleon potential. In the present paper, dynamically exact Faddeev-type calculations with coupled \(\bar{K}NN\) and \(\pi \varSigma N\) were performed using different models of the \(\varSigma N\) and \(\pi N\) interactions to study the influence
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Solution of Relativistic Feshbach–Villars Spin-1/2 Equations Few-Body Syst. (IF 1.6) Pub Date : 2024-03-23 D. Wingard, A. Garcia Vallejo, Z. Papp
We propose a computational method for relativistic spin-1/2 particles by solving the corresponding Feshbach–Villars equation. We have found that the Feshbach–Villars spin-1/2 Hamiltonian can be written as two spin-coupled Feshbach–Villars spin-0 Hamiltonians. For the solution method, we adopted an integral equation formalism. The potential operators are represented in a discrete Hilbert space basis
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Entanglement in Few-Nucleon Scattering Events Few-Body Syst. (IF 1.6) Pub Date : 2024-03-22 Tanja Kirchner, Wael Elkamhawy, Hans-Werner Hammer
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Measurement of Spin Correlation Coefficient $${\varvec{C}}_{{\varvec{y}},{\varvec{y}}}$$ for Proton- $$^{{\textbf {3}}}$$ He Elastic Scattering Few-Body Syst. (IF 1.6) Pub Date : 2024-03-19 A. Watanabe, S. Nakai, K. Sekiguchi, S. Goto, K. Hatanaka, Y. Hirai, T. Ino, D. Inomoto, M. Inoue, S. Ishikawa, M. Itoh, H. Kanda, H. Kasahara, Y. Maeda, K. Miki, K. Nonaka, H. J. Ong, H. Oshiro, D. Sakai, H. Sakai, S. Shibuya, D. T. Tran, H. Umetsu, Y. Utsuki, T. Wakasa
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Discrete Scaling in Non-integer Dimensions Few-Body Syst. (IF 1.6) Pub Date : 2024-03-19
Abstract We explore the effect of a finite two-body energy in the discrete scale symmetry regime of two heavy bosonic impurities immersed in a light bosonic system. By means of the Born–Oppenheimer approximation in non-integer dimensions (D), we discuss the effective potential of the heavy-particles Schrodinger equation. We study how including the two-body energy in the effective potential changes
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Fermionic Dynamics in a (2+1)-Dimensional Rainbow Universe Few-Body Syst. (IF 1.6) Pub Date : 2024-03-15 E. E. Kangal, O. Aydogdu, M. Salti
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The Dunkl–Fokker–Planck Equation in $$1+1$$ Dimensions Few-Body Syst. (IF 1.6) Pub Date : 2024-03-14 R. D. Mota, D. Ojeda-Guillén, M. A. Xicoténcatl
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The $${{\varvec{ppp}}}$$ Correlation Function with a Screened Coulomb Potential Few-Body Syst. (IF 1.6) Pub Date : 2024-03-13 A. Kievsky, E. Garrido, M. Viviani, M. Gattobigio
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Dynamics of Three-Nucleon Systems at 100 MeV Few-Body Syst. (IF 1.6) Pub Date : 2024-03-13 Izabela Skwira-Chalot, Nasser Kalantar-Nayestanaki, Stanisław Kistryn, Adam Kozela, Elżbieta Stephan
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Isospin Correlations in Isotope Yields at Intermediate and High Energy Heavy-Ion Collisions Few-Body Syst. (IF 1.6) Pub Date : 2024-03-12
Abstract Isotopic yields of fragments emitted from projectile sources in peripheral collisions at Fermi and relativistic energy regimes are studied in the framework of the statistical multifragmentation model for an ensemble of excited both projectile and midrapidity sources. The data of FAZIA and FRS experiments and results of their theoretical analyses are compared together with each other to investigate
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Experimental Study of Three-Nucleon Dynamics in the dp Breakup Reaction Few-Body Syst. (IF 1.6) Pub Date : 2024-03-11 B. Kłos
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Tests of the Envelope Theory for Three-Body Forces Few-Body Syst. (IF 1.6) Pub Date : 2024-03-10 Lorenzo Cimino, Clara Tourbez, Cyrille Chevalier, Gwendolyn Lacroix, Claude Semay
Many-body forces, and specially three-body forces, are sometimes a relevant ingredient in various fields, such as atomic, nuclear or hadronic physics. As their precise structure is generally difficult to uncover or to implement, phenomenological effective forces are often used in practice. A form commonly used for a many-body variable is the square-root of the sum of two-body variables. Even in this
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$$\phi $$ Meson Photoproduction on the Nucleon and $${}^4$$ He Targets Few-Body Syst. (IF 1.6) Pub Date : 2024-03-10
Abstract We study the reaction mechanism of \(\phi \) -meson photoproduction on the nucleon and \({}^4\) He targets by using a dynamical model based on a Hamiltonian. In addition to the dominant contribution of the Pomeron exchange, various meson exchanges are considered in the t channel to describe the CLAS data in the low energy region \({\sqrt{s}} = (1.97 - 2.84)\) GeV. The direct \(\phi \) radiations
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Metastability of Repulsive Bose–Einstein Condensate in a Finite Trap and Instability of Ground State Energies Few-Body Syst. (IF 1.6) Pub Date : 2024-03-07 Pankaj Kumar Debnath
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Radiative Neutron Capture Rate of $$^{11}$$ B $$(n,\gamma )^{12}$$ B Reaction from the Coulomb Dissociation of $$^{12}$$ B Few-Body Syst. (IF 1.6) Pub Date : 2024-03-05 Shubhchintak, G. Singh, R. Chatterjee, M. Dan
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The Vector Planar DKP Oscillator Within a Minimal Length Uncertainty Relation Few-Body Syst. (IF 1.6) Pub Date : 2024-03-05 Amenallah Andolsi, Yassine Chargui, Adel Trabelsi
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Breakup Amplitudes from the Pseudostate Extension of the Coupled-Reaction-Channels Method Few-Body Syst. (IF 1.6) Pub Date : 2024-03-02
Abstract A pseudochannel extension of the coupled-reaction-channel (CRC) ansatz had been used in earlier work to simulate the effect of the breakup channel on the rearrangement amplitudes. Comparisons with benchmark results on model systems established that rearrangement amplitudes and total breakup probability could be obtained accurately. However, achieving the same level of accuracy with respect
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Many-Channel Microscopic Model for Resonance Structure in $$^{9}$$ Be and $$^{9}$$ B: Astrophysical Insights Few-Body Syst. (IF 1.6) Pub Date : 2024-02-23 Yuliia Lashko, Victor Vasilevsky, Victor Zhaba
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Dynamical Vortex Production and Quantum Turbulence in Perturbed Bose–Einstein Condensates Few-Body Syst. (IF 1.6) Pub Date : 2024-02-20 Lauro Tomio, Anacé N. da Silva, S. Sabari, R. Kishor Kumar
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Classical ‘Spin’ Filtering with Two Degrees of Freedom and Dissipation Few-Body Syst. (IF 1.6) Pub Date : 2024-02-17
Abstract Coupling of orbital motion to a spin degree of freedom gives rise to various transport phenomena in quantum systems that are beyond the standard paradigms of classical physics. Here, we discuss features of spin-orbit dynamics that can be visualized using a classical model with two coupled angular degrees of freedom. Specifically, we demonstrate classical ‘spin’ filtering through our model
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Characterizing Klein–Fock–Gordon–Majorana Particles in (1 + 1) Dimensions Few-Body Syst. (IF 1.6) Pub Date : 2024-02-16 Salvatore De Vincenzo
Theoretically, in (1 + 1) dimensions, one can have Klein–Fock–Gordon–Majorana (KFGM) particles. More precisely, these are one-dimensional (1D) Klein–Fock–Gordon (KFG) and Majorana particles at the same time. In principle, the wave equations considered to describe such first-quantized particles are the standard 1D KFG equation and/or the 1D Feshbach–Villars (FV) equation, each with a real Lorentz scalar
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Properties of N, $$\Delta $$ Baryons with Screened Potential Few-Body Syst. (IF 1.6) Pub Date : 2024-02-14 Chandni Menapara, Ajay Kumar Rai
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Resonances in the R-Matrix Method Few-Body Syst. (IF 1.6) Pub Date : 2024-02-04 Pierre Descouvemont, Jérémy Dohet-Eraly
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Recent Results on Proton Charge Radius and Polarizabilities Few-Body Syst. (IF 1.6) Pub Date : 2024-02-02 Haiyan Gao, Jingyi Zhou
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ANCs of the Bound States of $$^{16}$$ O Deduced from Elastic $$\alpha $$ - $$^{12}$$ C Scattering Data Few-Body Syst. (IF 1.6) Pub Date : 2024-01-22
Abstract Asymptotic normalization coefficients (ANCs) of the \(0_1^+\) , \(0_2^+\) , \(1_1^-\) , \(2_1^+\) , \(3_1^-\) ( \(l_{i th}^\pi \) ) bound states of \(^{16}\) O are deduced from the phase shift data of elastic \(\alpha \) - \(^{12}\) C scattering at low energies. S matrices of elastic \(\alpha \) - \(^{12}\) C scattering are constructed within cluster effective field theory (EFT), in which
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Harmonic Oscillator in Cosmic String Space-Time with Dislocation Under a Repulsive $$1/r^2$$ Potential and Rotational Frame Effects Few-Body Syst. (IF 1.6) Pub Date : 2024-01-19 Faizuddin Ahmed
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Modified Attractive Inverse-Square Potential in the Induced Electric Dipole System Few-Body Syst. (IF 1.6) Pub Date : 2024-01-12 K. Bakke, J. G. G. S. Ramos
Abstract We examine the spatial distribution of electric charges within an extended, non-conductive cylinder featuring an inner radius denoted as \(r_{0}\) . Our investigation unveils the emergence of a distinct modified attractive-inverse square potential, arising from the intricate interplay between the electric field and the induced electric dipole moment of a neutral particle. This modified potential
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Three-Body Recombination Between Helium and Silver Atoms at Cold Collision Energies Few-Body Syst. (IF 1.6) Pub Date : 2024-01-06 Hiroya Suno
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Mass Dependence of Binding Energy in Three-Nucleon System Few-Body Syst. (IF 1.6) Pub Date : 2023-12-19 Igor Filikhin, Yury B. Kuzmichev, Branislav Vlahovic
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Electromagnetic Current Operators for Phenomenological Relativistic Models Few-Body Syst. (IF 1.6) Pub Date : 2023-12-18 W. N. Polyzou
Phenomenological Poincaré invariant quantum mechanical models can provide an efficient description of the dynamics of strongly interacting particles that is frame independent and consistent with spectral and scattering observables. These models are representation dependent and in order to apply them to reactions with electromagnetic probes it is necessary to use a consistent electromagnetic current
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Detailed Studies of 12C Structure and Reactions Few-Body Syst. (IF 1.6) Pub Date : 2023-12-05 Lorenzo Fortunato
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Ultra Low Energy Nuclear Synthesis via Three-Body Resonances in Cuboctahedron CsH $$_2$$ Pd $$_{12}$$ Cluster Few-Body Syst. (IF 1.6) Pub Date : 2023-11-20 Shinsho Oryu, Takashi Watanabe, Yasuhisa Hiratsuka
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An Alternative Scheme for Pionless EFT: Neutron-Deuteron Scattering in the Doublet S-Wave Few-Body Syst. (IF 1.6) Pub Date : 2023-11-12 M. Ebert, H.-W. Hammer, A. Rusetsky
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Calculation of Relativistic Single-Particle States Few-Body Syst. (IF 1.6) Pub Date : 2023-11-13 D. Wingard, B. Kónya, Z. Papp
A computational method is proposed to calculate bound and resonant states by solving the Klein–Gordon and Dirac equations for real and complex energies, respectively. The method is an extension of a non-relativistic one, where the potential is represented in a Coulomb–Sturmian basis. This basis facilitates the exact analytic evaluation of the Coulomb Green’s operator in terms of a continued fraction
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The Fate of Excited State of $$^4\text {He}$$ Few-Body Syst. (IF 1.6) Pub Date : 2023-11-03 M. Gattobigio, A. Kievsky
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Darboux Transformations for a Class of Duffin–Kemmer–Petiau Equations Governing Spin-Zero Systems Few-Body Syst. (IF 1.6) Pub Date : 2023-10-20 Axel Schulze-Halberg
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Effects of Gravitational Field of a Topological Defect on Heavy Quarkonia Spectra in a Non-relativistic Quark Model Few-Body Syst. (IF 1.6) Pub Date : 2023-10-19 A. Atangana Likéné, D. Nga Ongodo, J. M. Ema’a Ema’a, P. Ele Abiama, G. H. Ben-Bolie
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Axial Charmonium Production in Electron–Positron Annihilation at $$\mathbf {\sqrt{s}=10.6}$$ GeV in the Framework of Bethe–Salpeter Equation Few-Body Syst. (IF 1.6) Pub Date : 2023-10-10 Monika Narang, Shashank Bhatnagar
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Relativistic Quantum Effects on Scalar Bosons in Morris–Thorne-Type Wormhole Space-Time with a Cosmic String Few-Body Syst. (IF 1.6) Pub Date : 2023-10-03 Faizuddin Ahmed
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On an Exactly Solvable Two-Body Problem in Two-Dimensional Quantum Mechanics Few-Body Syst. (IF 1.6) Pub Date : 2023-10-03 Roman Ya. Kezerashvili, Jianning Luo, Claudio R. Malvino
It is well known that exactly solvable models play an extremely important role in many fields of quantum physics. In this study, the Schrödinger equation is applied for a solution of a two-dimensional (2D) problem for two particles enclosed in a circle, confined in an oscillatory well, trapped in a magnetic field, interacting via the Coulomb, Kratzer, and modified Kratzer potentials. In the framework
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Dynamical Diquarks and Baryon Transition Form Factors Few-Body Syst. (IF 1.6) Pub Date : 2023-10-03 Khépani Raya, Jorge Segovia
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Analytical Determination of Mass and Magnetic Moment of Baryons in Diquark Model Few-Body Syst. (IF 1.6) Pub Date : 2023-08-22 Mansour Farhadi, S. Mohammad Moosavi Nejad, A. Armat