182391760
Proportional Chamber Readout System
122791439
Search for parity-nonconservation effects in deep-inelastic μ-N interaction
Abstract The difference of the cross sections for deep inelastic scattering of muons with average momenta 21 GeV/ c with right and left helicity at large angles, i.e., with large momentum transfer, has been measured. No statistically-significant dependence of cross sections on the longitudinal polarization of muons has been found, i.e. no parity-nonconservation effects in deep inelastic μN interaction have been observed. The magnitude of the cross-section asymmetry R = [〈σ R 〉 − 〈σ L 〉] [〈σ R 〉+ + 〈σ L 〉] may be represented as R = β 〈 Q 2 〉 = (− 4 ± 6) × 10 −3 〈 Q 2 , (GeV/ c ) 2 〉. The limitations G o ( μ ) = (+ 6 ± 10) G have been obtained for the constant G o ( μ ) of vector-axial interaction ( G o (μ) 2 ) [ μ γα(1 + γ 5 )μ] J α o (hadron, V-A).
182241489
FOCUSING DOUBLE ARM SPECTROMETER
188602506
HANDLING OF OSCILLOGRAMS ON THE SCANNING TABLES OF PIKOTYPE
24885066
Triangular and Y-shaped hadrons in QCD
Gauge-invariant extended configurations are considered for the three fundamental (quarks) or adjoint (gluons) particles. For quarks, it is shown that the Y-shaped configuration is the only one possible. For adjoint sources, both Y-shaped and triangular configurations may exist. The corresponding static potentials are calculated by the method of field correlators and, in the case of baryons, shown to be consistent with the lattice simulations. For adjoint sources the potentials of Y-shaped and Δ-shaped configurations turn out to be close to each other, which leads to almost degenerate masses of 3−−3g glueballs and odderon trajectories.
15366174
Dyons in QCD: Confinement and Chiral Symmetry Breaking
Dyonic classical solutions of SU(2) gluodynamics are discussed. Exact form of dyonic solutions in different gauges is presented and the nontrivial problem of composition of the dilute gas of dyons is settled. Classical interaction between (anti)dyons is considered both analytically and numerically. Confinement in the dyonic gas is discussed in connection with the topological properties of individual dyon solution. Fermionic zero modes of dyonic are displayed and the chiral symmetry breaking in the dyonic gas is demonstrated.
122014501
THE THREE-BODY PROBLEM. COMPLETE SYSTEM OF ANGULAR FUNCTIONS
123103142
Regge trajectories from QCD
Abstract Relativistic quark-antiquark system in the vacuum background field is considered in the proper-time path-integral formalism. Dynamics is given by the Wilson loop for which the area law is assumed. The relativistic quark dynamics reduces for heavy q q bound states to three-dimensional Schrodinger equation with variable masses. A mechanism is discovered which generates dynamic (transverse) quark masses. Resulting Regge trajectories are asymptotically linear.
2303608
Pentaquark spectrum in string dynamics
Abstract The masses of uudd s and uudd d pentaquarks are evaluated in a framework of the effective Hamiltonian approach to QCD using the Jaffe–Wilczek [ud] 2 q approximation. The mass of the [ud] 2 s state is found to be ∼400 MeV higher than the observed Θ + (1540) mass.