Papers by Joseph Zhitnitsky
Physics Letters B, 1991
We propose to study an odderon exchange in the "pure" processes ~-,MM',)'T-,M jet, ep-.eMp (M=n °... more We propose to study an odderon exchange in the "pure" processes ~-,MM',)'T-,M jet, ep-.eMp (M=n °, rl, "q', 11c), etc. Corresponding cross sections with the "bare" odderon as the reggezied three-gluon exchange are estimated. At HERA energies in the process ep-,e0-p one should observe a steep growth (by an order of magnitude) of the "odderon" cross section.
Nuclear Physics B - Proceedings Supplements, 1992
Nuclear Physics B, 1982
The wave functions of the pseudoscalar and vector mesons (K, varrho, K*, varphi) are found using ... more The wave functions of the pseudoscalar and vector mesons (K, varrho, K*, varphi) are found using the QCD sum rules and are used for the calculation of the heavy quarkonium two-particle decay widths.
Nuclear Physics B, 1989
The first few moments of the wave functions for A's and 12 are evaluated by QCD sum rules. Model ... more The first few moments of the wave functions for A's and 12 are evaluated by QCD sum rules. Model wave functions are constructed based on these moments. Perturbative QCD predictions of cross sections for yy-o zl++A ++ and yy ~ 12~ are obtained by integrating the quark scattering amplitudes over these wave functions. The ratio of Y7-' a++a++ and ~,~,-,p~ cross sections is much lower than would be naively expected. Predictions for y~,-* BsB 8 are also given for the full baryon octet with QCD sum-rule wave functions.
By means of the QCD sum rule method we investigate the properties of two- and three-particle wave... more By means of the QCD sum rule method we investigate the properties of two- and three-particle wave functions of nonleading twist for the ..pi.. and rho mesons. We propose realistic models of these wave functions which satisfy the QCD sum rules.
Zeitschrift für Physik C Particles and Fields, 1989
Using the nucleon and A aa-resonance wave functions found out in previous papers [14, 15] we calc... more Using the nucleon and A aa-resonance wave functions found out in previous papers [14, 15] we calculate the electromagnetic and weak nucleon formfactors, the transition formfactor 767A and the decay widths of charmonium levels 3S 1, 3P 2 and 3P 1 into)VN and AA.
Zeitschrift für Physik C Particles and Fields, 1989
The leading twist baryonic wave function q)(xl, x2,x3) describes the distribution of three quarks... more The leading twist baryonic wave function q)(xl, x2,x3) describes the distribution of three quarks inside the baryon in the longitudinal momentum fractions 0 <xi< 1 at P~-* oo. The properties of these wave functions for the baryons entering the nucleon octet are investigated using the QCD sum rules. The high asymmetry in the distribution of the baryon momentum between three quarks is found for all members of the octet. The properties of the SU(3)symmetry breaking effects in baryonic wave functions are elucidated. The model wave functions are proposed which fulfil the sum rules requirements. The asymptotic behaviour of various baryon form factors (which can be measured in e § e-* BB) is found out. * At such a normalization convention one should replace in (5): da x ~ d3 x/~.
A detailed description is presented of the method used and the results obtained for measuring var... more A detailed description is presented of the method used and the results obtained for measuring various decay widths of the B-mesons into baryon-antibaryon pairs: (i) into two light baryons: B → pp, Δp, …, (ii) into one light and one charmed baryon: B → pΣc, pΛc,…, (iii) into two charmed baryons: B → Σc, Ξc, ΛcΞc,…, (iv) the decays induced by the b → s and b → d penguin contributions: B → pΣ, pΛ, ΔΣ,…. As a by-product, we present the result for the B-meson decay constant, fB, obtained from the new QCD sum rule and the values of many other analogous constants for transitions of various currents into baryons.
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Papers by Joseph Zhitnitsky