B. G. Zakharov

Jet quenching with running coupling including radiative and collisional energy losses (2008)

We discuss the relation between the treatments of the higher twist nuclear effects in eA DIS based on the pQCD collinear approximation and the light-cone path integral formalism. We show that in the...

Parton energy loss due to synchrotron-like gluon emission (2008)

We calculate the nuclear modification factor for RHIC and LHC conditions accounting for the radiative and collisional parton energy loss with the running coupling constant.We find that the RHIC data...

Comment on ``Success of collinear expansion in the calculation of induced gluon emission'' (2008)

We develop a quasiclassical theory of the synchrotron-like gluon radiation. Our calculations show that the parton energy loss due to the synchrotron gluon emission may be important in the jet...

Aurenche, P., Zakharov, B. G., Zaraket, H.

We show that the arguments against our recent paper on the failure of the collinear expansion in the calculation of the induced gluon emission raised by X.N. Wang are either incorrect or irrelevant.

Parton Energy Loss in Collinear Expansion (2008)

Failure of the collinear expansion in calculation of the induced gluon emission (2008)

We demonstrate that the N=1 rescattering contribution to the gluon radiation from a fast massless quark in eA DIS vanishes in the collinear approximation. It is shown that the nonzero N=1 gluon...

Aurenche, P., Zakharov, B. G., Zaraket, H.

We demonstrate that the collinear expansion fails in the case of gluon emission from a fast quark produced in $eA$ DIS. In this approximation the N=1 rescattering contribution to the gluon spectrum...

Parton energy loss in an expanding quark-gluon plasma: Radiative vs collisional (2007)

Collinear Photon Emission from the Quark-Gluon Plasma: The Light-Cone Path Integral Formulation (2007)

We perform a comparison of the radiative and collisional parton energy losses in an expanding quark-gluon plasma. The radiative energy loss is calculated within the light-cone path integral approach....

Aurenche, P., Zakharov, B. G.

We give a simple physical derivation of the photon emission rate from the weakly coupled quark-gluon plasma connected with the collinear processes $q\to \gamma q$ and $q\bar{q}\to \gamma$. The...

Collinear Photon Emission from the Quark-Gluon Plasma: The Light-Cone Path Integral Formulation (2006)

Aurenche, P., Zakharov, B. G.

We give a simple physical derivation of the photon emission rate from the weakly coupled quark-gluon plasma connected with the collinear processes $q\to \gamma q$ and $q\bar{q}\to \gamma$. The...

Unitarity constraints for DIS off nuclei: predictions for electron-ion colliders (2006)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

Future electron-ion colliders (eIC) will focus on the unitarity properties of deep inelastic scattering (DIS) in the limit of strong nuclear absorption. Strong nuclear shadowing and a large abundance...

Charged current diffractive structure functions (2006)

Genovese, M., Bertini, M., Nikolaev, N.N., Zakharov, B.G.

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Glue in the pomeron from nonlinear k_\perp-factorization (2006)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We derive the nonlinear k_\perp-factorization for the spectrum of jets in high-mass diffractive deep inelastic scattering as a function of three hard scales - the virtuality of the photon Q^2, the...

Nonlinear $k_{\perp}$-factorization: a new paradigm for an in-nucleus hard QCD (2005)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We review the origin, and salient features, of the breaking of the conventional linear $k_{\perp}$-factorization for an in-nucleus hard pQCD processes. A realization of the nonlinear...

Nonlinear k_\perp-factorization for Gluon-Gluon Dijets Produced off Nuclear Targets (2005)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G.

The origin of the breaking of conventional linear k_\perp-factorization for hard processes in a nuclear environment is by now well established. The realization of the nonlinear nuclear...

Nonlinear k_\perp-factorization for Quark-Gluon Dijet Production off Nuclei (2005)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

The breaking of conventional linear k_\perp-factorization for hard processes in a nuclear environment is by now well established. Here we report a detailed derivation of the nonlinear...

Nonuniversality Aspects of Nonlinear k_\perp-factorization for Hard Dijets (2005)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G.

The origin of the breaking of conventional linear k_\perp-factorization for hard processes in a nuclear environment is by now well established. The realization of the nonlinear nuclear...

Transition radiation in the quantum regime as a diffractive phenomenon (2005)

Schildknecht, D., Zakharov, B. G.

We demonstrate that the transition photon radiation and pair creation can be interpreted as a diffractive phenomenon in terms of the light-cone wave functions in a way similar to the Good-Walker...

Hard Scattering in a Nuclear Environment: Farewell to Linear $k_{\perp}$-Factorization (2005)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We discuss a dramatic change brought into the pQCD description of hard processes in a nuclear environment by a large thickness of heavy nuclei. It breaks the familiar linear $k_{\perp}$-factorization...

Nonuniversality aspects of nonlinear k(T)-factorization for hard dijets (2005)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G.

This version is available at the following Publisher URL: http://prl.aps.org

Light-cone path integral approach to the induced radiation in QED and QCD: basic concepts and recent applications (2004)

Radiative parton energy loss and jet quenching in high-energy heavy-ion collisions (2004)

I discuss the basic ideas of the light-cone path integral approach to the induced radiation in QED and QCD and recent applications to the induced parton energy loss.

Evolution of high-mass diffraction from the light quark valence component of the pomeron (2004)

We study within the light-cone path integral approach [3] the effect of the induced gluon radiation on high-p_{T} hadrons in high-energy heavy-ion collisions. The induced gluon spectrum is...

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We analyze the contribution from excitation of the $(q\bar q)(f\bar f),(q\bar q)g_1...g_n(f\bar f)$ Fock states of the photon to high mass diffraction in DIS. We show that the large $Q^2$ behavior of...

Color dipoles and k_t factorization for nuclei (2004)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We discuss applications of the color dipole approach to hard processes on nuclei. We focus on the relation to k_t--factorisation and the role of a nuclear unintegrated gluon distribution in single--...

Why Breakup of Photons and Pions into Forward Dijets Is so Different: Predictions from Nonlinear Nuclear k_t-factorization (2004)

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

Based on an approach to non-Abelian propagation of color dipoles in a nuclear medium we formulate a nonlinear k_t-factorization for the breakup of photons and pions into forward hard dijets in terms...

The role of finite kinematic bounds in the induced gluon emission from fast quarks in a finite size quark-gluon plasma (2004)

Induced photon emission from quark jets in ultrarelativistic heavy-ion collisions (2004)

We study the influence of finite kinematic boundaries on the induced gluon radiation from a fast quark in a finite size quark-gluon plasma. The calculations are carried out for fixed and running...

Description of the CERN SPS data on the Landau-Pomeranchuk-Migdal effect for photon bremsstrahlung in quantum regime (2003)

We study the induced photon bremsstrahlung from a fast quark produced in AA-collisions due to multiple scattering in quark-gluon plasma. For RHIC and LHC conditions the induced photon spectrum is...

Nonlinear kT factorization for Forward Dijets in DIS off Nuclei in the Saturation Regime (2003)

We analyze within the light-cone path integral approach [4] the recent CERN SPS data [19] on the Landau-Pomeranchuk-Migdal effect for photon bremsstrahlung in quantum regime from 149, 207, and 287...

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We develop the QCD description of the breakup of photons into forward dijets in small-x deep inelastic scattering off nuclei in the saturation regime. Based on the color dipole approach, we derive a...

High Density QCD, Saturation and Diffractive DIS (2002)

Ivanov, I. P., Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We review a consistent description of the fusion and saturation of partons in the Lorentz-contracted ultrarelativistic nuclei in terms of a nuclear attenuation of color dipole states of the photon...

Lectures on Diffraction and Saturation of Nuclear Partons in DIS off Heavy Nuclei (2002)

Ivanov, I. P., Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

The Lorentz contraction of ultrarelativistic nuclei entails a spatial overlap and fusion (recombination, saturation) of partons belonging to different nucleons at the same impact parameter. In these...

High Density QCD and Saturation of Nuclear Partons (2002)

Ivanov, I. P., Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We review the recent finding of the two-plateau momentum distribution of sea quarks in deep inelastic scattering off nuclei in the saturation regime. The diffractive plateau which dominates for small...

Coherent final state interaction in jet production in nucleus-nucleus collisions (2002)

Saturation of Nuclear Partons: the Fermi Statistics or Nuclear Opacity? (2002)

We study the coherent final state interaction of an energetic parton produced in AA collisions caused by the change in the cutoff scale and running coupling constant from the vacuum to QGP. We...

Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

We derive the two-plateau momentum distribution of final state (FS) quarks produced in deep inelastic scattering (DIS) off nuclei in the saturation regime. The diffractive plateau which dominates for...

Diffractive Hard Dijets and Nuclear Parton Distributions (2002)

Ivanov, I. P., Nikolaev, N. N., Schäfer, W., Zakharov, B. G., Zoller, V. R.

Diffraction plays an exceptional role in DIS off heavy nuclei. First, diffraction into hard dijets is an unique probe of the unintegrated glue in the target. Second, because diffraction makes 50 per...

On the Energy Loss of High Energy Quarks in a Finite-Size Quark-Gluon Plasma (2000)

Energy loss in perturbative QCD (2000)

We study within the light-cone path integral approach the induced gluon emission from a fast quark passing through a finite-size QCD plasma. We show that the leading log approximation used in...

Baier, R., Schiff, D., Zakharov, B. G.

We review the properties of energetic parton propagation in hot or cold QCD matter, as obtained in recent works. Advances in understanding the energy loss - collisional and radiative - are...

Final state interactions in $^{4}$He(e,e$^\prime$p)$^{3}$H at large proton energy (2000)

Benhar, O., Nikolaev, N. N., Speth, J., Usmani, A. A., Zakharov, B. G.

At large proton energy, the final state interactions of the knocked out nucleon in $\eep$ reactions off nuclear targets can be described within the eikonal approximation, treating the spectator...

Nuclear-Medium Modification of the Rho(1S)- and Rhoprim(2S)-Mesons in Coherent Photo- and Electroproduction: Coupled Channel Analysis (1999)

Nikolaev, N. N., Speth, J., Zakharov, B. G.

We study medium modifications of the dilepton mass spectrum in coherent photo- and electroproduction of the Rho(1S)- and Rhoprim(2S)-meson resonances on nuclear targets. The analysis is performed...

Azimuthal asymmetry as a new handle on $\sigma_{L}/\sigma_{T}$ in diffractive DIS (1998)

Nikolaev, N. N., Pronyaev, A. V., Zakharov, B. G.

We propose a new method of the determination of $R^{D}=\sigma_{L}^{D}/\sigma_{T}^{D}$ from the dependence of the diffractive cross section on the azimuthal angle between the electron scattering and...

Diffractive vector mesons beyond the s-channel helicity conservation (1998)

Kuraev, E. V., Nikolaev, N. N., Zakharov, B. G.

We derive a full set, and determine the twist, of helicity amplitudes for diffractive production of light to heavy vector mesons in deep inelastic scattering. For large $Q^{2}$ all helicity...

Predictions for the forward cone in diffractive DIS (1998)

Nikolaev, N. N., Pronyaev, A. V., Zakharov, B. G.

We calculate the diffraction slope $B_{D}$ for diffractive DIS. We find a counterintuitive rise of $B_{D}$ from exclusive diffractive excitation of vector mesons to excitation of continuum states...

Light-cone path integral approach to the Landau-Pomeranchuk-Migdal effect (1998)

Quark energy loss in an expanding quark-gluon plasma (1998)

A new rigorous light-cone path integral approach to the Landau-Pomeranchuk-Migdal effect in QED and QCD is discussed. The rate of photon (gluon) radiation by an electron (quark) in a medium is...

Diffraction in Charged Current DIS (1998)

We study the quark energy loss in an expanding quark-gluon plasma. The expanding plasma produced in high energy AA-collision is described by Bjorken's model. The dependence of the energy loss on the...

Bertini, M., Genovese, M., Nikolaev, N. N., Zakharov, B. G.

We present the QCD calculation of the diffractive structure function for charged current DIS. In particular we analyse the perturbatively tractable excitation of heavy quarks. We emphasize the...

Light-cone path integral approach to the Landau-Pomeranchuk-Migdal effect and the SLAC data on bremsstrahlung from high energy electrons (1998)

Charged Current Diffractive Structure Functions (1998)

The recent data of the SLAC E-146 collaboration on the Landau-Pomeranchuk-Migdal effect for bremsstrahlung from 8 and 25 GeV electrons are analyzed within a rigorous light-cone path integral...

Bertini, M., Genovese, M., Nikolaev, N. N., Zakharov, B. G.

We present our study of the diffraction in charged current DIS. We analyse the perturbatively tractable excitation of heavy quarks, emphasizing the peculiarities of the Regge factorization breaking...

Charged current diffractive structure functions (1998)

Genovese, M., Bertini, M., Nikolaev, N.N., Zakharov, B.G.

Twist-4 effects and Q$^2$ dependence of diffractive DIS (1998)

Bertini, M., Genovese, M., Nikolaev, N.N., Pronyaev, A.V., Zakharov, B.G.

Charged current diffractive structure functions (1998)

Genovese, M., Bertini, M., Nikolaev, N.N., Zakharov, B.G.

Twist-4 effects and Q$^2$ dependence of diffractive DIS (1998)

Bertini, M., Genovese, M., Nikolaev, N.N., Pronyaev, A.V., Zakharov, B.G.

The diffraction cone for exclusive vector meson production in deep inelastic scattering (1997)

Nemchik, J., Nikolaev, N. N., Predazzi, E., Zakharov, B. G., Zoller, V. R.

We develop the color dipole gBFKL phenomenology of a diffraction cone for photo- and electroproduction $\gamma^{*}N \to VN$ of heavy vector mesons (charmonium & bottonium) at HERA and in fixed target...

Twist-4 effects and $Q^{2}$ dependence of diffractive DIS (1997)

Bertini, M., Genovese, M., Nikolaev, N. N., Pronyaev, A. V., Zakharov, B. G.

In this letter we report the direct perturbative QCD evaluation of twist-4 effects in diffractive DIS. They are large and have a strong impact on the $Q^2$ dependence of diffractive structure...

Absorptive corrections to the one pion exchange and measurablity of the small-x pion structure function at HERA (1997)

Nikolaev, N. N., Speth, J., Zakharov, B. G.

We compaWe compare the absorptive corrections to the one pion exchange in $pp\to Xn$ and $ep\to e'Xn$ reactions. It is shown that the absorption is stronger in the case of $pp$ collision. The...

The BFKL-Regge Phenomenology of Deep Inelastic Scattering (1997)

Phenomenology of Diffractive DIS (1997)

We calculate the Regge trajectories of the subleading BFKL singularities and eigenfunctions for the running BFKL pomeron in the color dipole representation. We obtain a viable BFKL-Regge expansion of...

Nikolaev, Nikolai N., Zakharov, B. G.

The recent progress in the pQCD theroy of diffractive DIS (DDIS) is reviewed. We place emphasis on pQCD scales, diffractive factorization breaking, jet and charm production and new fundamental...

Radiative energy loss of high energy quarks in finite-size nuclear matter and quark-gluon plasma (1997)

Landau-Pomeranchuk-Migdal effect for finite-size targets (1996)

The induced gluon radiation of a high energy quark in a finite-size QCD medium is studied. For a sufficiently energetic quark produced inside a medium we find the radiative energy loss $\Delta...

The partonic structure of the generalized BFKL pomeron: an overview (1996)

A rigorous evaluation of the Landau-Pomeranchuk-Migdal effect for finite-size targets is performed within the path integral approach previously developed in ref. [4]. The bremsstrahlung rate in QED...

Genovèse, M, Nikolaev, N N, Zakharov, B G

Diffraction in DIS on nuclear targets (1996)

Nikolaev, N. N., Schaefer, W., Zakharov, B. G., Zoller, V. R.

We discuss the implications of a strong enhancement of diffraction for multiproduction in DIS off nuclear targets. The predicted effects are large and observable at HERA. We present the prediction of...

Diffractive DIS: back to triple-Regge phenomenology? (1996)

Nikolaev, N. N., Schaefer, W., Zakharov, B. G.

We discuss the factorization breaking effects caused by the contribution to large rapidity gap events from DIS on secondary reggeons. Based on the triple-Regge phenomenology of hadronic diffraction...

On the missing momentum dependence of the color transparency effects in (e,e'p) scattering (1996)

Benhar, O., Fantoni, S., Nikolaev, N. N., Speth, J., Usmani, A. A., Zakharov, B. G.

We explore the missing momentum dependence of the CT effects in quasielastic (e,e'p) scattering. We develop the coupled-channel multiple-scattering theory (CCMST) description of final-state...

Glauber theory of initial- and final-state interactions in (p,2p) scattering (1996)

Benhar, O., Fantoni, S., Nikolaev, N. N., Speth, J., Usmani, A. A., Zakharov, B. G.

We develop the Glauber theory description of initial- and final-state interactions (IFSI) in quasielastic A(p,2p) scattering. We study the IFSI-distortion effects both for the inclusive and exclusive...

Diffractive DIS from the Color Dipole BFKL Pomeron (1996)

Fully quantum treatment of the Landau--Pomeranchuk--Migdal effect in QED and QCD (1996)

We review the recent progress in the theory of diffractive DIS, focusing on predictions of strong breaking of the Ingelman-Schlein-Regge factorization and the related breaking of the GLDAP evolution...

Color dipole phenomenology of diffractive electroproduction of light vector mesons at HERA (1996)

For the first time a rigorous quantum treatment of the Landau-Pomeranchuk-Migdal effect in QED and QCD is given. The rate of photon (gluon) radiation by an electron (quark) in medium is expressed...

Nemchik, J., Nikolaev, N. N., Predazzi, E., Zakharov, B. G.

We develop the color dipole phenomenology of diffractive photo- and electroproduction $\gamma^{*}\,N\rightarrow V(V')\,N$ of light vector mesons ($V(1S) = \phi^0, \omega^0, \rho^0$) and their radial...

Anomalies in Diffractive Electroproduction of 2S Radially Excited Light Vector Mesons at HERA (1996)

Nemchik, J., Nikolaev, N. N., Predazzi, E., Zakharov, B. G.

We present the color dipole phenomenology of diffractive photo- and electroproduction $\gamma^{*} N\to V(V') N$ of vector mesons ($V(1S) = \phi^0, \omega^0, \rho^0, J/\Psi, \Upsilon$) and their...

Color Dipole Systematics of Diffractive Photo- and Electroproduction of Vector Mesons (1996)

Nemchik, J., Nikolaev, N. N., Predazzi, E., Zakharov, B. G.

We present the first evaluation of color dipole cross section from experimental data on diffractive photo- and electroproduction of vector mesons. The dipole-size and energy dependence of the found...

Excitation of open charm and factorization breaking in rapidity gap events at HERA (1996)

Factorization properties of the diffraction dissociation of longitudinal photons (1996)

We develop the pQCD description of diffraction excitation of heavy flavours in DIS and we derive the analytic formulas for the mass spectrum in leading log$m_f^{2}$. The result illustrates nicely...

Factorization properties of the diffraction dissociation of longitudinal photons (1996)

We develop the pQCD description of the diffraction dissociation (DD) of longitudinal photons. We demonstrate that the longitudinal diffractive structure function does not factor into the flux of...

Genovese, M., Nikolaev, N.N., Zakharov, B.G.

We develop the pQCD description of the diffraction dissociation (DD) of longitudinal photons. We demonstrate that the longitudinal diffractive structure function does not factor into the Aux of...

Factorization properties of the diffraction dissociation of longitudinal photons (1996)

Genovese, M., Nikolaev, N.N., Zakharov, B.G.

We develop the pQCD description of the diffraction dissociation (DD) of longitudinal photons. We demonstrate that the longitudinal diffractive structure function does not factor into the Aux of...

Factorization properties of the diffraction dissociation of longitudinal photons (1996)

Genovese, M., Nikolaev, N.N., Zakharov, B.G.

We develop the pQCD description of the diffraction dissociation (DD) of longitudinal photons. We demonstrate that the longitudinal diffractive structure function does not factor into the Aux of...

Inclusive Heavy-Flavor Production from Nuclei (1995)

Nikolaev, N. N., Piller, G., Zakharov, B. G.

We describe a light-cone wave function formulation for hadroproduction of heavy-flavors at high energies. At moderate values of $x_F$ heavy-flavor production can be viewed as a diffractive excitation...

Color Transparency (1995)

Universal pattern in (e,e'p) at large missing momenta: quasi-deuteron or diffractive final state interactions? (1995)

The current status of the theory of and the experimental evidence for color transparency are reviewed. The problems with interpretation of quasielastic scattering on nuclei are discussed to some...

Bianconi, A., Jeschonnek, S., Nikolaev, N. N., Zakharov, B. G.

The intrinsic single particle momentum distributions in nuclei are supposed to show a universal behavior at large momenta, dominated by short-range correlated pairs, or quasi-deuterons. We discuss...

Do final state interactions obscure short range correlation effects in quasielastic $A(e,e'p)$ scattering? (1995)

Bianconi, A., Jeschonnek, S., Nikolaev, N. N., Zakharov, B. G.

Are short range correlations in the ground state of the target nucleus (initial state correlations ISC)observable inexperiments on quasielastic $A(e,e'p)$ scattering at large missing momentum...

Final state interactions and $NN$ correlations: are the latter observable? (1995)

Bianconi, A., Jeschonnek, S., Nikolaev, N. N., Speth, J., Zakharov, B. G.

Are effects of short range correlations in the ground state of the target nucleus (initial state correlations ISC) observable in experiments on quasielastic $A(e,e'p)$ scattering at large missing...

Exploratory study of shrinkage of the diffraction cone for the generalized BFKL pomeron (1995)

The strange quark distribution (1995)

In color dipole gBFKL dynamics, we describe the emerging gBFKL phenomenology of a subasymptotic energy dependence of the diffraction slope and discuss possibilities of testing the gBFKL predictions...

Barone, V, Genovèse, M, Nikolaev, N N, Predazzi, Enrico, Zakharov, B G

We discuss the latest CCFR determination of the strange sea density of the proton. We comment on the differences with a previous, leading--order, result and point out the relevance of quark mass...

THE STRANGE QUARK DISTRIBUTION (1995)

BARONE, V., GENOVESE, M., NIKOLAEV, N. N., PREDAZZI, E., ZAKHAROV, B. G.

We discuss the latest CCFR determination of the strange sea density of the proton. We comment on the differences with a previous, leading--order, result and point out the relevance of quark mass...

The longitudinal asymmetry of the $(e,e'p)$ missing momentum distribution as a signal of color transparency (1995)

Benhar, O., Fantoni, S., Nikolaev, N. N., Speth, J., Usmani, A. A., Zakharov, B. G.

We use multiple scattering theory to evaluate the $Q^{2}$ dependence of the forward-backward asymmetry, $A_{z}$, of the missing momentum distribution in quasielstic $A(e,e'p)$ scattering, which is...

On the determination of double diffraction dissociation cross section at HERA (1995)

Holtmann, H., Nikolaev, N. N., Szczurek, A., Speth, J., Zakharov, B. G.

The excitation of the proton into undetected multiparticle states (double diffraction dissociation) is an important background to single diffractive deep-inelastic processes $ep \rightarrow...

Glauber theory of final-state interactions in $(e,e'p)$ scattering (1995)

Nikolaev, N. N., Speth, J., Zakharov, B. G.

We develop the Glauber theory description of final-state interaction (FSI) in quasielastic $A(e,e'p)$ scattering. The important new effect is an interaction between the two trajectories which enter...

Quadrupole deformation of deuterons and final state interaction in $^2 \vec H (e,e'p)$ scattering on tensor polarized deuterons at CEBAF energies (1995)

Bianconi, A., Jeschonnek, S., Nikolaev, N. N., Zakharov, B. G.

The strength of final state interaction (FSI) between struck proton and spectator neutron in $^2\vec{H}(e,e'p)$ scattering depends on the alignment of the deuteron. We study the resulting FSI effects...

On the missing momentum dependence of the color transparency effects in (e,e'p) scattering (1995)

Benhar, Omar, Fantoni, Stefano, Nikolaev, N. N., Speth, J., Usmani, A. A., Zakharov, B. G.

Glauber theory of initial and final-state interactions in (p,2p) scattering (1995)

Benhar, Omar, Fantoni, Stefano, Usmani, A. A., Nikolaev, N. N., Speth, J., Zakharov, B. G.

Quantum coherence in heavy-flavor production on nuclei (1994)

Nikolaev, N. N., Piller, G., Zakharov, B. G.

We describe a light-cone wave function formalism for hadroproduction of heavy-flavors via gluon-gluon fusion. The developed approach is well suited to address coherence effects in heavy-quark...

Nuclear effects in the diffractive electroproduction of s$\overline{s}$ mesons (1994)

Benhar, O, Zakharov, B G, Nikolaev, N N, Fantoni, S

The direct calculation of the slope of the QCD pomeron's trajectory (1994)

The apparent Coulomb reacceleration of neutrons in electrodissociation of the deuteron (1994)

We demonstrate that the diffraction slope of the generalized BFKL pomeron amplitude has the conventional Regge growth $B(s) = B(0) + 2\alpha_{\Pom}'\log(s)$. This proves that the generalized BFKL...

Bianconi, A., Jeschonnek, S., Nikolaev, N. N., Zakharov, B. G.

We demonstrate that the final state $p$-$n$ interaction in the reaction of electrodissociation of the deuteron at large $Q^{2}$ in a static external field leads to the apparent reacceleration of...

Direct calculation of the triple-pomeron coupling for diffractive DIS and real photoproduction (1994)

Genovèse, M, Nikolaev, N N, Zakharov, B G

We present a unified direct calculation of the triple-pomeron coupling A_{3\Pom}(Q^{2}) for diffractive real photoproduction (Q^{2}=0) and deep inelastic scattering at large Q^{2} in the framework of...

Diffractive DIS from the generalized BFKL pomeron: predictions for HERA (1994)

Genovèse, M, Nikolaev, N N, Zakharov, B G

We present microscopic QCD calculation of the cross section of diffractive DIS and of the partonic structure of the pomeron from the dipole approach to the generalized BFKL pomeron. We show that the...

Direct calculation of the triple-pomeron coupling for diffractive DIS and real photoproduction (1994)

Diffractive DIS from the generalized BFKL pomeron. Predictions for HERA (1994)

We present a unified direct calculation of the triple-pomeron coupling $A_{3\Pom}(Q^{2})$ for diffractive real photoproduction ($Q^{2}=0$) and deep inelastic scattering at large $Q^{2}$ in the...

Theoretical interpretation of the NE18 experiment on nuclear transparency in A(e,e'p) scattering (1994)

We present microscopic QCD calculation of the cross section of diffractive DIS and of the partonic structure of the pomeron from the dipole approach to the generalized BFKL pomeron. We show that the...

Nikolaev, N N, Szczurek, A, Speth, J, Wambach, J, Zakharov, B G, Zoller, V R

The spectral function, measured in $A(e,e'p)$ reactions, is distorted by the final-state interaction of the struck proton with the residual nucleus. This causes a broadening of the observed...

Final state interaction effects in $D(e,e'p)$ scattering (1994)

Bianconi, A., Jeschonnek, S., Nikolaev, N. N., Zakharov, B. G.

We present a systematic study of the final-state interaction (FSI) effects in $D(e,e'p)$ scattering in the CEBAF energy range with particular emphasis on the phenomenon of the angular anisotropy of...

Simple classification of final state interaction effects in $^4He(e,e'p)$ scattering (1994)

Bianconi, A., Jeschonnek, S., Nikolaev, N. N., Zakharov, B. G.

The radius of interaction between the struck proton and spectator nucleons is close to the radius of short-distance two-nucleon correlations in nuclear matter, which makes final state...

Color transparency after the NE18 and E665 experiments: Outllok and perspectives at CEBAF (1994)

Nemchik, J., Nikolaev, N. N., Zakharov, B. G.

CEBAF is a high-luminocity factory of virtual photons with variable virtuality $Q^{2}$ and transverse size. This makes CEBAF, in particular after the energy upgrade to (8-12)GeV, an ideal facility...

Why more hadronlike photons produce less particles on nuclear targets (1994)

Scanning the BFKL pomeron in elastic production of vector mesons at HERA (1994)

In hadron-nucleus interactions, the stronger is nuclear shadowing in the total cross section the higher is the multiplicity of secondary hadrons. In deep inelastic scattering, nuclear shadowing at...

Nemchik, J., Nikolaev, N. N., Zakharov, B. G.

Elastic production of vector mesons $\gamma^{*} N\to V N$ is the pomeron-exchange dominated diffractive reaction with much potential of probing the BFKL pomeron. The BFKL pomeron can conveniently be...

Anomalous A-dependence of diffractive leptoproduction of radial excitation $\rho'(2S)$ (1994)

Nemchik, J., Nikolaev, N. N., Zakharov, B. G.

We predict a strikingly different $A$ and $Q^{2}$ dependence of quasielastic leptoproduction of the $\rho^{0}(1S)$-meson and its radial excitation $\rho '(2S)$ on nuclei. Whereas for the $\rho^{0}$...

Splitting the pomeron into two jets: a novel process at HERA (1994)

How to measure the intercept of the BFKL pomeron at HERA (1994)

We study a novel property of large rapidity-gap events in deep inelastic scattering at HERA: splitting the pomeron into two jets in the photon-pomeron fusion reaction $\gamma^{*}\Pom \rightarrow...

On determination of the large-${1\over x}$ gluon distribution at HERA (1994)

Determination of the intercept of the BFKL pomeron is one of the pressing issues in the high energy physics. Earlier we have shown that, at the dipole size $r=r_{\Delta}=(0.1-0.2)$f, the dipole cross...

Leptoproduction of charm revisited (1994)

We discuss corrections to the Leading-Log$Q^{2}$ relationships between the gluon density $g(x,Q^{2})$ and $F_{L}(x,Q^{2}),\,\partial F_{T}(x,Q^{2}) /\partial \log Q^{2}$ in the HERA range of large...

Barone, V., Genovese, M., Nikolaev, N. N., Predazzi, E., Zakharov, B. G.

We calculate the energy--momentum distribution of the charmed quarks produced in neutrino reactions on protons, quantifying the importance of mass and current non--conservation effects. We study the...

The BFKL and GLDAP regimes for the perturbative QCD pomeron (1994)

Theoretical Interpretation of the NE18 Experiment on Nuclear Transparency in A(e,e'p) Scattering (1994)

The $S$-matrix of diffractive scattering is diagonalized in terms of the colour dipole-dipole cross section. Recently, we have shown that the dipole cross section satisfies the generalized BFKL...

Nikolaev, N. N., Szczurek, A., Speth, J., Wambach, J., Zakharov, B. G., Zoller, V. R.

The spectral function, measured in $A(e,e'p)$ reactions, is distorted by the final-state interaction of the struck proton with the residual nucleus. This causes a broadening of the observed...

Deep inelastic scattering at HERA and the BFKL pomeron (1994)

BFKL evolution and universal structure function at very small $x$ (1994)

We present a BFKL phenomenology of structure functions in the framework of the generalized BFKL equation for the dipole cross section proposed by us recently. We show that the HERA measurements of...

The spectrum and solutions of the generalized BFKL equation for total cross section (1994)

The Balitskii-Fadin-Kuraev-Lipatov (BFKL) and the Gribov-Lipatov- Dokshitzer-Altarelli-Parisi (GLDAP) evolution equations for the diffractive deep inelastic scattering at ${1\over x} \gg 1$ are shown...

The $s$-channel approach to Lipatov's pomeron and hadronic cross sections (1993)

The colour dipole cross section is the principal quantity in the lightcone $s$-channel description of the diffractive scattering. Recently we have shown that the dipole cross section satisfies the...

Decisive test of color transparency in exclusive electroproduction of vector mesons (1993)

We derive a generalized Balitskii-Fadin-Kuraev-Lipatov equation, which applies directly to the perturbative QCD component of total cross section. With the gluon correlation radius $R_{c} \sim 0.4$f...

Kopeliovich, B. Z., Nemchick, J., Nikolaev, N. N., Zakharov, B. G.

The exclusive production of vector mesons in deep inelastic scattering is a hard scattering process with the well controlled size of quark configurations which dominate the production amplitude. This...

Color Transparency after the Ne18 and E665 Experiments (1993)

Shadowing in deuterium and the small--$x$ limit of $F_2^n/F_2^p$ and $F_2^p - F_2^n$ (1993)

The 1993 witnessed two major news in the field of color transparency (CT): i) no effect of CT was seen in the SLAC NE18 experiment on $A(e,e'p)$ scattering at virtualities of the exchanged photon...

Barone, V., Genovese, M., Nikolaev, N. N., Predazzi, E., Zakharov, B. G.

We discuss the updated NMC determination of $F_2^n/F_2^p$ and $F_2^p - F_2^n$. Shadowing effects in deuterium make the structure functions determined by the NMC sensibly different from the true ones...

Non universality of structure functions and measurement of the strange sea density (1993)

Barone, V., Genovese, M., Nikolaev, N. N., Predazzi, E., Zakharov, B. G.

We show that there is no real conflict between the two determinations of the strange sea density from the opposite--sign dimuon production and from the difference of the $F_2$ structure functions...

Unitarization of Structure Functions at Large ${\bf 1/x}$ (1993)

Barone, V., Genovese, M., Nikolaev, N. N., Predazzi, E., Zakharov, B. G.

We discuss the effects of the $s$-channel unitarization on the $x$ and $Q^{2}$ dependence of structure functions. The unitarization is implemented at the level of photoabsorption cross sections by...

Correlation Effects in the Final-State Interaction for Quasielastic $(e,e'p)$ Scattering (1993)

Nikolaev, N. N., Szczurek, A., Speth, J., Wambach, J., Zakharov, B. G., Zoller, V. R.

Color transparency predicts that, in $(e,e'p)$ reactions at large $Q^2$, the final-state interaction becomes weaker than the reference value predicted from the free-nucleon cross section. This...

The triple-pomeron regime and the structure function of the pomeron in the diffractive deep inelastic scattering at very small x (1993)