Article
Astronomy & Astrophysics
Chao-Qiang Geng, Chia-Wei Liu, Xiao Yu, Ao-wen Zhou
Summary: In this study, we investigate the semileptonic decays of B-cc using the bag model. We calculate the decay widths for different decay modes and the decay ratio of B-cc to B-c. We also discuss the effects of SU(3) flavor symmetry breaking.
Article
Astronomy & Astrophysics
Ulas Ozdem
Summary: In this study, the magnetic moments of possible T++cc states were calculated using light-cone sum rules. The results reveal that the T++cc states have large magnetic moments due to their double electric charge. Measurement of the magnetic moment of these states can provide valuable information about their substructure and quantum numbers.
Article
Physics, Particles & Fields
Hua-Xing Chen, Wei Chen, Xiang Liu, Xiao-Hai Liu
Summary: The study supports the interpretation of P-cs(4459)(0) as the (D) over bar *Xi(c) hadronic molecular state, and suggests further investigation to verify this interpretation by examining the separation of P-cs(4459)(0) into two states.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Multidisciplinary
Ulas Ozdem
Summary: Motivated by the discovery of doubly charmed tetraquark T-cc(+) by LHCb collaboration, this study investigates the magnetic moments of possible doubly heavy pentaquark states. The results reveal a non-spherical charge distribution, providing valuable insights into the geometric configurations of these particles.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Astronomy & Astrophysics
Guo-He Yang, En -Pei Liang, Qin Qin, Kang-Kang Shao
Summary: Imbalanced beauty-charmed baryons Xi(+,0)(bc) bc are of great significance to the development of heavy flavor physics. This study examines the inclusive weak-annihilation decays of Xi(+,0)(bc) and the impact on their lifetimes. The calculations are done within the heavy diquark effective theory, which allows for the construction of the operator product expansion. The results show that both the lifetimes and the branching ratios of Xi(+,0)(bc) are highly sensitive to the spin of the bc diquark in Xi(+,0)(bc). The study also presents results for Xi(+,0)(bc) -> X-cd decays. Experimental searches for Xi(0)(bc) at the LHC should focus on exclusive decays such as Xi(+)(bc) -> D(*)+ Lambda, Xi(+)(bc) -> Lambda(+)(c) (K) over bar ((*)0), Xi(+)(bc) -> D(*)+ K(-)p, and Xi(+)(bc) -> D-0 (K) over bar ((*)0), as they have longer lifetimes and larger branching ratios compared to Xi(0)(bc) -> D(0)pK(-).
Article
Astronomy & Astrophysics
Hao-Song Li, Wen-Li Yang
Summary: In this study, the magnetic moments of spin-1/2 doubly charmed baryons were investigated using heavy baryon chiral perturbation theory. One-loop corrections with intermediate spin-1/2 and spin-3/2 states were considered, and numerical results were calculated up to next-to-leading order. The obtained results may be beneficial for future experiments and chiral extrapolation in lattice QCD.
Article
Physics, Particles & Fields
T. M. Aliev, M. Savci, S. Bilmis
Summary: In this study, the decays of doubly heavy baryons Ξ(bb) and Ξ(cc) are investigated using the light-cone sum rules framework. The branching ratios of the transitions are calculated and compared with other approaches, leading to some important findings.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Juhi Oudichhya, Keval Gandhi, Ajay Kumar Rai
Summary: This study calculates the masses of baryons containing bottom quarks within the framework of Regge phenomenology, estimates the excited-state masses of singly, doubly, and triply bottom baryons, and attempts to assign possible spin parity to some recently observed singly bottom baryons. The calculated masses are consistent with experimental observations and close to other theoretical predictions.
Article
Astronomy & Astrophysics
Juhi Oudichhya, Keval Gandhi, Ajay Kumar Rai
Summary: The study calculates the masses of ground and excited states of Omega(0)(c), Omega(+)(cc) and Omega c(cc)(*)(++) baryons within the framework of Regge phenomenology, attempting to assign a possible spin-parity to these obtained masses. The calculated masses are in agreement with experimental observations and close to other theoretical predictions, providing useful information for future experimental searches and spin-parity assignments of these states. By fixing the slope and intercept of each Regge line, the study also estimates the masses of higher excited states of these baryons.
Article
Astronomy & Astrophysics
Jian-Rong Zhang
Summary: The study examines 0(+) fully-charmed tetraquark states through QCD sum rules, with mass values matching experimental data and supporting the possibility of it being a fully-charmed tetraquark state.
Article
Astronomy & Astrophysics
Zhen-Xing Zhao, Fu-Wei Zhang, Xiao-Hui Hu, Yu-Ji Shi
Summary: In this work, a three-quark picture is constructed using a bottom-up approach for baryons in a light-front quark model. The shape parameters, which characterize the momentum distribution inside a baryon, are determined with the help of the pole residue of the baryon. The relation between the three-quark picture and the diquark picture is clarified. When building the model, it is found that Lorentz boost plays a crucial role, and the bottom-up modeling approach can be generalized to multiquark states. Based on this, a unified theoretical framework for describing multiquark states may be established.
Article
Astronomy & Astrophysics
Hui-Min Yang, Hua-Xing Chen, Er-Liang Cui, Qiang Mao
Summary: In this study, we investigate the properties and masses of Xi(b)(6100) and its partner states using the methods of QCD sum rules and light-cone sum rules within the framework of heavy quark effective theory. Our results suggest that Xi(b)(6100) can be interpreted as a P-wave bottom baryon and has a partner state labeled as Xi(b)(1/2(-)). Additionally, lambda(b)(5912) and lambda(b)(5920) are identified as partner states of Xi(b)(6100) with J(P) = 1/2(-) and 3/2(-), respectively, and other charmed partner states are also discussed.
Article
Physics, Nuclear
Zhi-Gang Wang, Hui-Juan Wang
Summary: In this research, stable QCD sum rules were obtained by carrying out operator product expansion up to vacuum condensates of different dimensions, leading to successful prediction of masses for several heavy baryon states. The results are in good agreement with experimental data, supporting the assignment of certain states as the first radial excited states in the heavy baryon spectrum.
Article
Physics, Nuclear
Zhi-Gang Wang, Qi Xin
Summary: In this work, we comprehensively explore the ground state mass spectrum of the bottom-charm baryon states using the framework of QCD sum rules. We distinguish the contributions of positive-parity and negative-parity baryon states, investigate the energy scale dependence of the QCD sum rules, and observe acceptable energy scales.
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2022)
Article
Astronomy & Astrophysics
Ulas Ozdem
Summary: The magnetic moments of vector hidden-charmed tetraquark states are determined using light-cone sum rules, and their consistency can be checked by various methods. The magnetic moments of hadrons provide useful knowledge about their geometrical shapes.
