S-wave bottom baryons

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.Comment: 14 pages, latex, typos correcte

Baryonium X(1835)

The relativistic six-quark equations including the u, d quarks and antiquarks are found. The nonstrange baryonia B/bar B are contructed without the mixing of the quarks and antiquarks. The relativistic six-quark amplitudes of the baryonia are calculed. The poles of these amplitudes determine the masses of baryonia. 16 masses of baryonia are predicted.Comment: 14 page

Molecular state NΞN\Xi in the coupled-channel formalism

The relativistic six-quark equations for the molecule $N\Xi$ are found in the dispersion relation technique. The relativistic six-quark amplitudes of the hexaquark including the quarks of three flavors ($u$, $d$, $s$) are calculated. The pole of these amplitudes determines the mass of $N\Xi$ state $M=2252\, MeV$. The binding energy is equal to $3\, MeV$.Comment: 8 page

Form factors of SS-wave charmed baryon multiplet JP=1/2+J^P={1/2}^+

Electric form factors of $S$-wave charmed baryons are calculated within the relativistic quark model in the region of low and intermediate momentum transfers, $Q^2 \le 1 GeV^2$. The charge radii of low-lying charmed baryons are determined.Comment: 8 pages, late

Excited (70,1−){\bf (70,1^-)} baryon resonances in the relativistic quark model

The relativistic three-quark equations of the ${\bf (70,1^-)}$ baryons 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 ${\bf (70,1^-)}$ multiplet are in good agreement with the experimental ones.Comment: Latex, 37 pages, 3 figure

Bottom (70,1−){\bf (70,1^-)} baryon multiplet

The masses of negative parity $(70,1^-)$ bottom nonstrange baryons are calculated in 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 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.Comment: 14 pages. arXiv admin note: substantial text overlap with arXiv:0709.0397, arXiv:0706.3135, arXiv:hep-ph/070112

Relativistic quark-gluon description of 3He^3 He

The relativistic nine-quark equations are found in the framework of the dispersion relation technique. $^3 He$ nucleus is described by these equations. We consider the $^3 He$ as the system of interacting quarks and gluons. The approximate solutions of these equations using the method based on the extraction of leading singularities of the amplitudes are obtained. The relativistic nine-quark amplitudes of $^3 He$, including the $u$, $d$ quarks are calculated. The poles of these amplitudes determine the mass of nine-quark system. The $^3 He$ mass $M=2809\, MeV$ is calculated. The gluon coupling constant in the light nuclei region is equal to $g=0.1536$. The gluon interaction of $^3 He$ is obtained in 2 -- 3 time smaller as compared with baryon interaction.Comment: 19 pages. arXiv admin note: substantial text overlap with arXiv:1009.3365, arXiv:1003.025

Nonstrange baryonia

The relativistic six-quark equations including the $u$, $d$ quarks and antiquarks are found. The nonstrange baryonia $B \bar B$ are constructed without the mixing of the quarks and antiquarks. The relativistic six-quark amplitudes of the baryonia are calculated. The poles of these amplitudes determine the masses of baryonia. 15 masses of baryonia are predicted. The mass of baryonium with the spin-parity $J^P=0^-$ $M=1835\, MeV$ is used as a fit.Comment: 28 pages, late

Low-lying hypernuclei in the relativistic quark-gluon model

Low-lying hypernuclei $^3_{\Lambda}H$, $^3_{\Sigma}H$, $^3_{\Lambda}He$, $^3_{\Sigma}He$ are described by the relativistic nine-quark equations 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 amplitudes are obtained. The relativistic nine-quark amplitudes of hypernuclei, including the quarks of three flavors ($u$, $d$, $s$) are calculated. The poles of these amplitudes determine the masses of hypernuclei. The mass of state $^3_{\Lambda}H$ with the isospin I=0 and the spin-parity $J^P=\frac{1}{2}^+$ is equal to $M=2991\, MeV$.Comment: 8 pages. arXiv admin note: substantial text overlap with arXiv:1211.0667; and text overlap with arXiv:1206.5219 by other author

Heavy hypernuclei with A=3A=3 in a relativistic quark-gluon model

We generalized our approach to the hypernuclei with $A=B=3$ containing one charm or one bottom quark. We derive the relativistic nine-quark equations using the dispersion relation technique. The hypernuclei as the system of interacting quarks and gluons are considered. The relativistic nine-quark amplitudes of hypernuclei, including the constituent quarks with the charm or bottom are calculated. The approximate solutions of these equations are obtained using a method based on the extraction of leading singularities of the amplitudes. The poles of the multiquark amplitudes allow us to determine the masses and the binding energy of hypernuclei with the $A=3$. We predict the mass spectrum of hypernuclei with $A=3$, which is valuable to further experimental study of the hypernuclei with charm and bottom.Comment: 10 pages. arXiv admin note: text overlap with arXiv:1410.2551; text overlap with arXiv:1301.5790 by other author