scholarly journals CHARMED (70, 1-) BARYON MULTIPLET

2008 ◽  
Vol 17 (04) ◽  
pp. 585-610 ◽  
Author(s):  
S. M. GERASYUTA ◽  
E. E. MATSKEVICH
Keyword(s):  
Experimental Data ◽  
Dispersion Relation ◽  
Approximate Solutions ◽  
Negative Parity ◽  
Relativistic Quark Model ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Calculated Mass ◽  
The Masses ◽  
Good Agreement

The masses of negative parity (70, 1-) charmed nonstrange baryons are calculated in the relativistic quark model. The relativistic three-quark equations of the (70, 1-) charmed baryon multiplet are found in the framework of the dispersion relation technique. The approximate solutions of these equations using the method based on the extraction of leading singularities of the amplitude are obtained. The calculated mass values of the (70, 1-) charmed baryons are in good agreement with the experimental data.

scholarly journals Bottom (70,1-) baryon multiplet

2020 ◽  
Vol 164 ◽  
pp. 01008
Author(s):  
Elena Matskevich
Keyword(s):  
Dispersion Relation ◽  
Quark Model ◽  
Approximate Solutions ◽  
Negative Parity ◽  
Relativistic Quark Model ◽  
Systems Of Equations ◽  
The Masses ◽  
Bottom Baryon

The aim of this paper is to derive systems of equations for the amplitudes for the case of negative parity (70,1-) bottom nonstrange baryons and to calculate the masses of these particles. In order to calculate masses of (70,1-) bottom baryons we use the relativistic quark model. The relativistic three-quark equations of the (70,1-) bottom baryon multiplet are derived in the framework of the dispersion relation technique. The relativistic three-quark equations of the (70,1-) bottom baryon multiplet are derived. The approximate solutions of these equations using the method based on the extraction of leading singularities of the amplitude are obtained. The masses of 21 baryons are predicted.

scholarly journals S-WAVE BOTTOM BARYONS

2009 ◽  
Vol 18 (08) ◽  
pp. 1785-1799 ◽  
Author(s):  
S. M. GERASYUTA ◽  
E. E. MATSKEVICH
Keyword(s):  
Dispersion Relation ◽  
Approximate Solutions ◽  
S Wave ◽  
Calculated Mass ◽  
The Masses ◽  
Coupled Channel ◽  
Channel Formalism ◽  
Good Agreement

The masses of S-wave bottom baryons are calculated in the framework of coupled-channel formalism. The relativistic three-quark equations for the bottom baryons using the dispersion relation technique are found. The approximate solutions of these equations based on the extraction of leading singularities of the amplitude are obtained. The calculated mass values of S-wave bottom baryons are in good agreement with the experimental ones.

scholarly journals RELATIVISTIC QUARK MODEL AND PENTAQUARK SPECTROSCOPY

2003 ◽  
Vol 12 (06) ◽  
pp. 793-807 ◽  
Author(s):  
S. M. GERASYUTA ◽  
V. I. KOCHKIN
Keyword(s):  
Dispersion Relation ◽  
Quark Model ◽  
Mass Spectra ◽  
Relativistic Quark Model ◽  
The Masses ◽  
Meson States

Relativistic five-quark equations are found in the framework of the dispersion relation technique. The solutions of these equations using the method based on the extraction of the leading singularities of the amplitudes are obtained. The five-quark amplitudes for the low-lying pentaquarks are calculated under the condition that flavor SU(3) symmetry holds. The poles of the five-quark amplitudes determine the masses of the lowest pentaquarks. The mass spectra of pentaquarks which contain only light quarks are calculated. The calculation of pentaquark amplitudes estimates the contributions of three subamplitudes: molecular subamplitude BM, Mqqq subamplitude and [Formula: see text] subamplitude. The main contributions to the pentaquark amplitude are determined by the subamplitudes, which include the meson states M.

A Study on Baryon Masses with Diquark as Composite Fermion

2015 ◽  
Vol 10 (3) ◽  
pp. 2816-2824 ◽  
Author(s):  
A. Bhattacharya ◽  
R. Ghosh ◽  
B. Chakrabarti
Keyword(s):  
Experimental Data ◽  
Composite Fermion ◽  
Quasi Particle ◽  
The Masses ◽  
Good Agreement

Diquarks are described in the framework of composite fermion (CF) model of quasi particle. The masses of the light  [Λ0, Σ-, Ξ-, Ω-], heavy [Λ+c, Λ0b, Σ+c, Σ0b, Ξ0c, Ξ0b, Ω0c, Ω-b], doubly heavy  [Ξ++cc ,Ξ+cc, Ξ0cb, Ξ+cb ,Ξ0bb, Ξ-bb, Ω+cc, Ω0cb, Ω-bb ] and triply heavy [Ωccc, Ωccb, Ωcbb, Ωbbb] baryons have been studied for JP = (1/ 2)+ and (3/2)+ states, considering the diquark-quark configuration for the baryons. The results are found to be in good agreement with available experimental data and other theoretical works.

scholarly journals DIBARYONS WITH TWO HEAVY QUARKS

2012 ◽  
Vol 21 (06) ◽  
pp. 1250058 ◽  
Author(s):  
S. M. GERASYUTA ◽  
E. E. MATSKEVICH
Keyword(s):  
Dispersion Relation ◽  
Approximate Solutions ◽  
Heavy Quarks ◽  
B Quarks ◽  
The Masses

The relativistic six-quark equations are constructed in the framework of the dispersion relation technique. The relativistic six-quark amplitudes of dibaryons including the light u, d and heavy c, b quarks are calculated. The approximate solutions of these equations using the method based on the extraction of leading singularities of the heavy hexaquark amplitudes are obtained. The poles of these amplitudes determine the masses of charmed and bottom dibaryons with the isospins I = 0, 1, 2 and the spin-parities JP = 0+, 1+, 2+.

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 DIBARYONS

2011 ◽  
Vol 20 (12) ◽  
pp. 2443-2462 ◽  
Author(s):  
S. M. GERASYUTA ◽  
E. E. MATSKEVICH
Keyword(s):  
Dispersion Relation ◽  
Approximate Solutions ◽  
Heavy Quarks ◽  
The Masses

The relativistic six-quark equations are found in the framework of the dispersion relation technique. The approximate solutions of these equations using the method based on the extraction of leading singularities of the heavy hexaquark amplitudes are obtained. The relativistic six-quark amplitudes of dibaryons including the light quarks u, d and heavy quarks c, b are calculated. The poles of these amplitudes determine the masses of charmed and bottom dibaryons with the isospins [Formula: see text], [Formula: see text], [Formula: see text].

scholarly journals MASS EFFECTS IN THE QUARK–GLUON DECAYS OF HEAVY PARAQUARKONIA

1998 ◽  
Vol 13 (27) ◽  
pp. 2199-2204 ◽  
Author(s):  
A. YA. PARKHOMENKO ◽  
A. D. SMIRNOV
Keyword(s):  
Experimental Data ◽  
Energy Distribution ◽  
Decay Width ◽  
Branching Ratios ◽  
Energy Distributions ◽  
Total Decay Width ◽  
Quark Masses ◽  
Decay Widths ◽  
The Masses ◽  
Good Agreement

Quark–gluon decays of heavy paraquarkonia [Formula: see text] are investigated with account of the masses of final quarks. The decay widths and the energy distributions of the final quarks and gluons are calculated in dependence on the relative quark masses. The strong collinear enhancement of the gluon energy distribution at the end of the spectrum is shown to take place in all such decays of ηc and ηb mesons except the decay [Formula: see text]. The total decay width is shown to have an essential dependence on the final quark masses. The corresponding branching ratios of ηc and ηb mesons are numerically estimated with a good agreement of [Formula: see text] with experimental data on ηc decays.

scholarly journals CHARMED BARYON IN A STRING MODEL

2010 ◽  
Vol 19 (01) ◽  
pp. 113-122 ◽  
Author(s):  
WANG QING-WU ◽  
ZHANG PENG-MING
Keyword(s):  
Experimental Data ◽  
Charm Quark ◽  
String Model ◽  
Spin Interaction ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Quantum Numbers ◽  
Constant Tension ◽  
Baryon Spectroscopy

Charmed baryon spectroscopy has been studied under a string model. In this model, charmed baryons are composed of a diquark and a charm quark which are connected by a constant tension. In this diquark picture, the quantum numbers JP of confirmed baryons have been well assigned. Energies of the first and second orbital excitations have been predicted and compared with the experimental data. Meanwhile, diquark masses have been extracted in the background of charm quark which satisfy a splitting relation based on spin–spin interaction.

scholarly journals DIQUARKS AND PENTAQUARK NATURE

2006 ◽  
Vol 15 (01) ◽  
pp. 87-99
Author(s):  
S. M. GERASYUTA ◽  
V. I. KOCHKIN
Keyword(s):  
Dispersion Relation ◽  
Mass Spectra ◽  
Negative Parity ◽  
The Masses ◽  
S Quarks

The relativistic five-quark equations are found in the framework of the dispersion relation technique. The five-quark amplitudes for the low-lying pentaquarks including the u, d, s-quarks are calculated. The poles of these amplitudes determine the masses of the nucleon and the Ξ–– pentaquarks. The mass spectra of the lowest pentaquarks with the [Formula: see text] are calculated. The mass values of the positive and negative parity pentaquarks are determined by the mixing of both 0+ and 1+ diquarks.

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