scholarly journals Heavy Baryon Spectroscopy in the Relativistic Quark Model

Particles ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 234-244 ◽  
Author(s):  
Rudolf N. Faustov ◽  
Vladimir O. Galkin
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Heavy Baryon ◽  
Lhcb Collaboration ◽  
Relativistic Quark Model ◽  
Quantum Numbers ◽  
Heavy Baryons ◽  
Baryon Spectroscopy ◽  
Good Agreement

Masses of heavy baryons are calculated in the framework of the relativistic quark-diquark picture and QCD. The obtained results are in good agreement with available experimental data including recent measurements by the LHCb Collaboration. Possible quantum numbers of excited heavy baryon states are discussed.

scholarly journals Heavy baryon spectroscopy

2019 ◽  
Vol 204 ◽  
pp. 08001 ◽  
Author(s):  
Rudolf N. Faustov ◽  
Vladimir O. Galkin
Keyword(s):  
Experimental Data ◽  
Heavy Baryon ◽  
Lhcb Collaboration ◽  
Quantum Numbers ◽  
Heavy Baryons ◽  
Baryon Spectroscopy ◽  
Good Agreement

Masses of heavy baryons are calculated in the relativistic quarkdiquark picture. Obtained results are in good agreement with available experimental data including recent measurements by the LHCb Collaboration. Possible quantum numbers of excited heavy baryon states are discussed.

scholarly journals New Predictions for Charmed and Bottom Baryons

1997 ◽  
Vol 12 (22) ◽  
pp. 4079-4086 ◽  
Author(s):  
Adam F. Falk
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Heavy Baryon ◽  
Constituent Quark Model ◽  
Recent Proposal ◽  
Quantum Numbers ◽  
Poor Predictor ◽  
Heavy Baryons ◽  
Baryon Spectroscopy ◽  
Bottom Baryon

I review the recent proposal that there are new isotriplet heavy baryons with masses approximately 2380 MeV and 5760 MeV. This prediction follows from the application of heavy spin-flavor and light SU(3) symmetries to the observed charmed and bottom baryon states. It also entails assumptions about the spin and parity quantum numbers of the observed states which are different than is commonly supposed. The discovery of such states would imply that the nonrelativistic constituent quark model is a poor predictor of heavy baryon spectroscopy. I update the analysis in light of new data which have become available.

scholarly journals Ground-state masses and magnetic moments of heavy baryons

2014 ◽  
Vol 29 (20) ◽  
pp. 1450106 ◽  
Author(s):  
Zahra Ghalenovi ◽  
Ali Akbar Rajabi ◽  
Si-xue Qin ◽  
Dirk H. Rischke
Keyword(s):  
Experimental Data ◽  
Hyperfine Interaction ◽  
Quark Model ◽  
Ground State ◽  
Magnetic Moments ◽  
Heavy Flavor ◽  
Relativistic Quark Model ◽  
Heavy Baryons ◽  
Hypercentral Approach ◽  
Good Agreement

In this work, we study single, double and triple heavy-flavor baryons using the hypercentral approach in the framework of the non-relativistic quark model. Considering two different confining potentials and an improved form of the hyperfine interaction, we calculate the ground-state masses of heavy baryons and also the ground-state magnetic moments of single charm and beauty baryons with JP = 3/2+. The obtained results are in good agreement with experimental data and those of other works.

DYNAMICAL STUDY OF HEAVY-BARYON SPECTROSCOPY

2008 ◽  
Vol 23 (22) ◽  
pp. 1819-1828 ◽  
Author(s):  
YOUCHANG YANG ◽  
CHENGRONG DENG ◽  
HONGXIA HUANG ◽  
JIALUN PING
Keyword(s):  
Experimental Data ◽  
Constituent Quark ◽  
Heavy Baryon ◽  
Expansion Method ◽  
Constituent Quark Model ◽  
S Wave ◽  
Dynamical Study ◽  
Heavy Baryons ◽  
Baryon Spectra ◽  
Baryon Spectroscopy

The spectroscopy of S-wave heavy-baryons containing one, two or three heavy quarks is investigated in a constituent quark model. We solve the Schrödinger equation for three particles exactly by means of a Gaussian expansion method. The calculated results of heavy-baryon spectra with a single heavy quark are consistent with the experimental data.

Mass spectrum of triply heavy baryon in the hypercentral quark model

2021 ◽  
Vol 36 (39) ◽  
Author(s):  
N. Tazimi ◽  
A. Ghasempour
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Heavy Baryon ◽  
Constituent Quark Model ◽  
Quantum Numbers ◽  
Heavy Baryons ◽  
Klein Gordon ◽  
Three Body ◽  
Uvarov Method ◽  
Dependent Interaction

In this study, we consider baryons as three-body bound systems according to hypercentral constituent quark model in configuration space and solve three-body Klein–Gordon equation. Then we analyze perturbative spin-dependent and isospin-dependent interaction effects. To find the analytical solution, we used screened potential and calculate the eigenfunctions and eigenvalues of triply heavy baryons by using Nikiforov–Uvarov method. We compute the ground and excited state masses of triply heavy baryons with quantum numbers [Formula: see text], [Formula: see text], [Formula: see text] via constituent quark model approach.

scholarly journals Calculation of doubly heavy baryons decay

2021 ◽  
Vol 78 (3) ◽  
pp. 4-11
Author(s):  
Zh.Zh. Tyulemissov ◽  
◽  
A.N. Issadykov ◽  
A.K. Bekbaev ◽  
D.T. Aznabaev ◽  
...  
Keyword(s):  
Experimental Data ◽  
Form Factors ◽  
Heavy Baryon ◽  
Nonleptonic Decay ◽  
Heavy Baryons ◽  
Charm Baryon ◽  
Helicity Amplitudes ◽  
Pros And Cons ◽  
Double Charm ◽  
Good Agreement

We calculated a subclass of four nonleptonic two-body weak decays of the double charm baryon ground states Ξcc++. Nonleptonic decays can be dividedinto two group: factorizable and nonfactorizable decays. The first one can be easily calculated from first principles. Therefore, its good example understands all pros and cons of a model. We focused on a weak two-body nonleptonic decay consists only fromthe factorizing contribution precluding a contamination from W-exchange. We use the covariant confined quark model previously developed by us to calculate the various helicity amplitudes which describe the dynamics of the transition induced by the Cabibbo-favored effective currents. Achievement of CCQM is that only size parameter Λvarying can describe all tree diagrams of nonleptonic decay. We then proceed to calculate the rates of the decay. The rates, branching ratios and helicity amplitude were calculated using dimensionless invariant form factors. Also, we calculated leptonic constant for scalar and vector mesons which has good agreement with experimental data. There isn’t any experimental data about the decay so we waiting for new experimental observation in the heavy baryon sector.

scholarly journals Heavy Tetraquarks in the Relativistic Quark Model

Universe ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 94
Author(s):  
Rudolf N. Faustov ◽  
Vladimir O. Galkin ◽  
Elena M. Savchenko
Keyword(s):  
Experimental Data ◽  
Form Factor ◽  
Mass Spectrum ◽  
Quark Model ◽  
Detailed Comparison ◽  
Lhcb Collaboration ◽  
Relativistic Quark Model ◽  
Quasipotential Approach ◽  
The Masses ◽  
Gluon Interaction

We give a review of the calculations of the masses of tetraquarks with two and four heavy quarks in the framework of the relativistic quark model based on the quasipotential approach and QCD. The diquark-antidiquark picture of heavy tetraquarks is used. The quasipotentials of the quark-quark and diquark-antidiquark interactions are constructed similarly to the previous consideration of mesons and baryons. Diquarks are considered in the colour triplet state. It is assumed that the diquark and antidiquark interact in the tetraquark as a whole and the internal structure of the diquarks is taken into account by the calculated form factor of the diquark-gluon interaction. All parameters of the model are kept fixed from our previous calculations of meson and baryon properties. A detailed comparison of the obtained predictions for heavy tetraquark masses with available experimental data is given. Many candidates for tetraquarks are found. It is argued that the structures in the di-J/ψ mass spectrum observed recently by the LHCb collaboration can be interpreted as ccc¯c¯ tetraquarks.

e+ e- ANNIHILATION INTO $\overline{N}N$ PAIRS

2003 ◽  
Vol 18 (02n06) ◽  
pp. 370-373 ◽  
Author(s):  
Y. YAN ◽  
C. KOBDAJ ◽  
W. UCHAI ◽  
AMAND FAESSLER ◽  
T. GUTSCHE ◽  
...  
Keyword(s):  
Experimental Data ◽  
Vector Meson ◽  
Quark Model ◽  
Step Process ◽  
Meson Decays ◽  
Quantum Numbers ◽  
One Step ◽  
The One

The reactions of electron-position annihilation into nucleon-antinucleon pairs have been studied in a nonperturbative quark model. The work suggests that the two-step process, in which the primary [Formula: see text] pair forms first a meson and then the meson decays into baryon pair, is dominant over the one-step process in which the primary [Formula: see text] pair is directly dressed by two additional [Formula: see text] pairs to form a baryon pair. The experimental data indicates that there exists a vector meson with quantum numbers IG(JPC) = 0-(1--) and a mass around 2 GeV.

Heavy baryons in the relativistic quark model

2003 ◽  
Vol 50 (2) ◽  
pp. 329-339 ◽  
Author(s):  
V.E. Lyubovitskij ◽  
A. Faessler ◽  
Th. Gutsche ◽  
M.A. Ivanov ◽  
J.G. Körner
Keyword(s):  
Quark Model ◽  
Relativistic Quark Model ◽  
Heavy Baryons
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