Petersburg Nuclear Physics Institute

output

19922026

most citedOperator expansion for high-energy scattering

1.8k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 1998Show all

53 papers · 1 filter

hep-ph1998★ 36 cited

The intrinsic charm contribution to the proton spin

M. V. Polyakov, A. Schaefer, O. V. Teryaev

The charm quark contribution to the first moment of $g_{1} (x, Q^{2})$ is calculated using a heavy mass expansion of the divergence of the singlet axial current. It is shown to be small.

hep-ph1998★ 15 cited

Survival Probability of Large Rapidity Gaps

E. Levin, A. D. Martin, M. G. Ryskin

We summarize the discussions on the value of the survival probabilities of large rapidity gap (LRG) processes at Durham WS'98.

hep-ph1998★ 4 cited

F_2 at low Q^2

A. D. Martin, M. G. Ryskin, A. Stasto

We analyse the data for the proton structure function $F_{2}$ over the entire $Q^{2}$ domain, including especially low $Q^{2}$ , in terms of perturbative and non-perturbative QCD contribu…

hep-th1998★ 1 cited

Screening of Fractional Charges in (2+1)-dimensional QED

D. Diakonov, K. Zarembo

We show that the logarithmically rising static potential between opposite-charged sources in two dimensions is screened by dynamical fields even if the probe charges are fractional…

hep-ph1998★ 66 cited

Duality symmetry of Reggeon interactions in multicolour QCD

L. N. Lipatov

The duality symmetry of the Hamiltonian and integrals of motion for Reggeon interactions in multicolour QCD is formulated as an integral equation for the wave function of compound…

hep-ph1998★ 2 cited

Asymptotic high energy behavior of the deeply virtual Compton scattering amplitude

B. I. Ermolaev, F. I. Olness, A. G. Shuvaev

We compute the deeply virtual Compton scattering (DVCS) amplitude for forward and backward scattering in the asymptotic limit. Since this calculation does not assume ordering of th…

hep-ph1998★ 2 cited

Fermionic Bound States and Pseudoscalar Exchange

A Anselm, N Dombey

We discuss the possibility that fermions bind due to Higgs or pseudoscalar exchange. It is reasonable to believe on qualitative grounds that this can occur for fermions with a mass…

hep-ph1998★ 12 cited

Self-consistent treatment of the quark condensate and hadrons in nuclear matter

E. G. Drukarev, M. G. Ryskin, V. A. Sadovnikova

We calculate the contribution of pions to the $q ˉ q$ -expectation value $κ (ρ) =< M ∣ q ˉ q ∣ M >$ in symmetric nuclear matter. We employ exact pion propagator renormalized by nucleon…

nucl-th1998★ 6 cited

P- and T-violation Tests with Polarized Resonance Neutrons

V. Bunakov, Y. Novikov

The enhancements of CP-violating effects in resonance neutron transmissionthrough polarized targets are studied for 2 possible versions of experiment. The importance is stressed of…

hep-ex1998★ 57 cited

Observation of a Coherence Length Effect in Exclusive Rho^0 Electroproduction

K. Ackerstaff

Exclusive incoherent electroproduction of the rho^0(770) meson from 1H, 2H, 3He, and 14N targets has been studied by the HERMES experiment at squared four-momentum transfer Q**2>0.…

hep-ph1998★ 1 cited

Impact Parameter Dependences of the Number of Interacting Nucleons and Mean Multiplicities in High Energy Heavy Ion Interactions

C. Pajares, Yu. M. Shabelski

We consider the dependences of the average number of interacting nucleons in high energy heavy ion collisions on the impact parameter in two cases, when the colliding nuclei have e…

cond-mat.str-el1998★ 35 cited

Ground state instability in systems of strongly interacting fermions

S. A. Artamonov, Yu. G. Pogorelov, V. R. Shaginyan

We analyze stability of a fermion system with model repulsive pair interaction potential. The possibility for different types of restructuring of the Fermi ground state (at suffici…

hep-ph1998★ 4 cited

Production of qqQQ final states in ee collisions in the left-right symmetric model

J. Maalampi, N. Romanenko

We consider the reaction ee ->qqQQ as a test of lepton number non-conservation in the framework of the left-right-symmetric electroweak model. The main contributions to this proces…

physics.atom-ph1998★ 44 cited

Calculation of hyperfine structure constants for ytterbium

S. G. Porsev, Yu. G. Rakhlina, M. G. Kozlov

We calculate energies and hyperfine structure constants A and B for low-lying levels of $^{173}$ Yb. The latter is treated as a two-electron atom. To account for valence-valence cor…

hep-lat1998★ 7 cited

To what distances do we know the confining potential?

Dmitri Diakonov, Victor Petrov

We argue that asymptotically linear static potential is built in into the common procedure of extracting it from lattice Wilson loop measurements. To illustrate the point, we extra…

hep-ph1998★ 43 cited

The Operator Product Expansion, Non-perturbative Couplings and the Landau Pole: Lessons from the O(N) $σ$ -Model

M. Beneke, V. M. Braun, N. Kivel

We obtain the operator product expansion of the self-energy in the O(N) non-linear $σ$ -model to all orders in the coupling and the large momentum, and to next-to-leading order in 1…

hep-ph1998★ 213 cited

Hard exclusive electroproduction of two pions and their resonances

M. V. Polyakov

We study the hard exclusive production of two pions in the virtual photon fragmentation region with various invariant masses including the resonance region. The amplitude is expres…

hep-ph1998★ 19 cited

Hard Exclusive Electroproduction of Pseudoscalar Mesons and QCD axial anomaly

Michael I. Eides, Leonid L. Frankfurt, Mark I. Strikman

The hard exclusive electroproduction of $π^{0}, η, η^{'}$ mesons by the longitudinal photons is considered. We calculate the ratios of the $π^{0} : η : η^{'}$ yields for the electroproduction p…

hep-ex1998★ 55 cited

Determination of the Deep Inelastic Contribution to the Generalised Gerasimov-Drell-Hearn Integral for the Proton and Neutron

K. Ackerstaff

The virtual photon absorption cross section differences [sigma_1/2-sigma_3/2] for the proton and neutron have been determined from measurements of polarised cross section asymmetri…

physics.atom-ph1998★ 1 cited

Comment on "Accurate relativistic effective potentials for the sixth-row main group elements" [J.Chem.Phys. 107, 9975 (1997)]

N. Mosyagin, A. Titov

Critical remarks in respect to the Generalized Relativistic Effective Core Potential in the recent article of S.A.Wildman at al. are discussed and shown to be incorrect.

hep-ph1998★ 6 cited

Phenomenology of Neutral D-meson Decays and Double-Flavor Oscillations

Ya. Azimov

Decays of neutral D-mesons are considered phenomenologically without invoking any particular models. Special attention is given to cascade decays with intermediate neutral kaons wh…

cond-mat.supr-con1998

Superconducting correlations in any dimensionality

D. N. Aristov

We consider the static anomalous Cooper loop for the electron gas of arbitrary spatial dimensionality, D. This object enters the mean-field equation for the superconducting tempera…

hep-ph1998★ 9 cited

Duality of Reggeon Interactions in QCD