Article
Astronomy & Astrophysics
Kai Watanabe
Summary: This study proposes a new application of lattice QCD to calculate the quark-diquark potential, diquark mass, and quark mass. The HAL QCD method is used to calculate the charm-diquark potential and suggests that the weakening of the attraction may be attributed to the diquark size effect.
Article
Physics, Multidisciplinary
Halil Mutuk
Summary: In this study, the mass spectra and magnetic moments of ccu baryon were investigated using a quark-diquark model with a nonrelativistic potential. The results suggest that the clustering of cu diquark is more favorable than cc diquark in the Xi(++)(cc) baryon.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Astronomy & Astrophysics
Fu-Lai Wang, Hong-Yan Zhou, Zhan-Wei Liu, Xiang Liu
Summary: This study systematically investigates the magnetic moments, the transition magnetic moments, and the radiative decay behaviors of the S-wave isoscalar Xi(('))(c)(D) over bar ((*)) molecular pentaquark states. The results show that their electromagnetic properties can provide important hints for understanding the inner structure of these discussed isoscalar Xi(('))(c)(D) over bar* molecular pentaquarks. It is suggested that future experiments should focus on the electromagnetic properties of these isoscalar Xi(('))(c)(D) over bar(*) molecular pentaquarks, which are a typical hidden-charm molecular pentaquark system with single strangeness.
Article
Astronomy & Astrophysics
Dongyan Fu, Bao-Dong Sun, Yubing Dong
Summary: In this work, the electromagnetic and gravitational form factors of a spin-3/2 particle, ?? resonance, are simultaneously calculated using a relativistic covariant quark-diquark approach. The obtained form factors are in good agreement with experimental data and comparable to other methods. Additionally, the gravitational form factors giving mechanical properties of the ?? isobar are provided, along with discussions on the sign and interpretation of the D term.
Article
Astronomy & Astrophysics
Avijit Hazra, Saheli Rakshit, Rohit Dhir
Summary: In this study, the magnetic moments of ground state charm and bottom baryon states with J(P) = 1/2(+) and J(P) = 3/2(+) were calculated using the effective mass concept based on single gluon exchange interaction. By utilizing experimental data in the heavy flavor sector, interaction contributions were estimated to determine the effective masses of quarks within the baryons. Transition moments and radiative M1 decay widths of these heavy flavored baryons were also studied and predicted.
Article
Physics, Particles & Fields
Ming-Zhu Liu, Li-Sheng Geng
Summary: This study investigates the possible existence of molecules in systems such as D()Xi cc(), Xi cc()Xi cc(), B()B(), B()Xi bb(), and Xi bb()Xi bb() using heavy anti-quark di-quark symmetry. Through the analysis, various molecular states are predicted in different systems, with the implication that X(7200) may be related to X(3872) in some way.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Binesh Mohan, S. Thejus Mary, Avijit Hazra, Rohit Dhir
Summary: Motivated by precision measurements of heavy flavor baryon masses, this study analyzes the modification of quark charge and the screening effect inside the baryon. By considering isospin symmetry breaking and state mixing effects, the masses, magnetic moments, and transition moments of quark baryons are predicted, and radiative decay widths are calculated.
Article
Astronomy & Astrophysics
X. Y. Liu, A. Limphirat, K. Xu, Z. Zhao, K. Khosonthongkee, Y. Yan
Summary: We study the axial transition form factors GB'B'A(Q2) and the axial charges gB'B' A of the octet baryons in the perturbative chiral quark model with the inclusion of both ground and excited states in the intermediate quark propagators. The results from the perturbative chiral quark model are in good agreement with experimental data and lattice-QCD values. The study reveals that the dipolelike behavior of GB'B'A(Q2) is primarily caused by the three-quark core, with the contribution from the meson cloud and excited-state quark propagator being limited.
Article
Astronomy & Astrophysics
Ze-Hua Cao, Wei He, Zhi-Feng Sun
Summary: In this work, the Lagrangian describing the meson-diquark interaction is constructed to study the Z(cs) states, introducing the diquark-anti-diquark component and molecular component. The Bethe-Salpeter equation is solved and it is found that Zcs(4000)(+) can be explained as a mixture of (D) over bar D-*0(s)+ /(A) over bar (cs)A(cu) components. Additionally, a pole with a mass close to Z(cs)(4220)(+) is predicted for the (D) over bar D-*0(s)+ /(A) over bar (cs)A(cu) system.
Article
Astronomy & Astrophysics
Muhammad Naeem Anwar, Timothy J. Burns
Summary: This article presents new linear relations among the masses of S-wave tetraquarks, which can help to reveal the internal structure of tetraquarks and discriminate among different theoretical models. The validity of these relations is confirmed through a thorough comparison with experimental data.
Article
Physics, Particles & Fields
Ulas Ozdem
Summary: This study analyzes the electromagnetic properties, such as magnetic dipole and electric quadrupole moments, of σ(c)(2800)+ and Λc(2940)+ states. The findings shed light on the internal organization and structure of these states.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Jung-Min Suh, Hyun-Chul Kim
Summary: In this study, the axial-vector transition form factors of the lowest-lying singly heavy baryons are investigated using the chiral quark-soliton model. Numerical results are presented and compared with experimental data.
Article
Astronomy & Astrophysics
Shi Chen, Kenji Fukushima, Zebin Qiu
Summary: We investigate the baryon properties in the presence of a strong magnetic field using the Skyrme model. Our calculations reveal the dependence of mass and pressure distribution in the soliton on the applied magnetic field. We identify a magnetically induced contribution to the pressure sum rule, which we interpret as an additional confining force. Furthermore, we quantize the soliton and establish a simple relation between the pressure and mass differences.
Article
Astronomy & Astrophysics
Taiju Amano, Daisuke Jido, Stefan Leupold
Summary: We investigated the weak decays of (B) over bar (0)(s) and Lambda(b) and discovered the supersymmetry between the (s) over bar quark and the ud diquark in the wave functions of heavy hadrons. We also derived a new sum rule relating the decay rates of certain processes.
Article
Astronomy & Astrophysics
Jung -Min Suh, June -Young Kim, Ghil-Seok Yang, Hyun-Chul Kim
Summary: We investigate the quark spin content of the SU(3) baryon octet, decuplet, antitriplet, and sextet by considering the rotational corrections and symmetry breaking effects. The results are compared with various theoretical works and lattice QCD.
