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A. V. Kisselev

Publications and source records attributed to A. V. Kisselev.

61 records · Page 4Linked to original sources
arXiv1999

Charm Contribution to the Structure Function in Diffractive Deep Inelastic Scattering

The charm contribution to the structure functions of diffractive deep inelastic scattering is considered here within the context of the Ingelman-Schlein model. Numerical estimations of this contribution are made from parametrizations of the HERA data. Influence of the Pomeron flux factor is analized as well as the effect of the shape of the initial parton distribution employed in the calculations. The obtained results indicate that the charm contribution to diffractive deep inelastic process might be large enough to be measured in the HERA experiments.

hep-ph↗
arXiv1999

Charged Particle Multiplicity in Diffractive Deep Inelastic Scattering

The recent data from H1 Collaboration on hadron multiplicity in diffractive DIS has been studied in the framework of perturbative QCD as a function of invariant diffractive mass. The formulas obtained explain the observed excess of particle production in diffractive DIS relative to that in DIS and $e^+e^-$ annihilation. It is shown that the results are sensitive to the quark--gluon structure of the Pomeron. Namely, the data say in favour of a super-hard gluon distribution at the initial scale.

hep-ph↗
arXiv1998

Box Anomaly and $η' \to π^+ π^- γ$ Decay

In the framework of the "current scheme" of $η- η'$ mixing we calculate the amplitude of the decay $η' \to π^+ π^- γ$ in the soft limit and compare our results with recently reported values of the phenomenological additive terms to the $ρ$--meson background.

hep-ph↗
arXiv1996

Dependence of Deep Inelastic Structure Functions on Quark Masses

We argue that the difference between the structure functions corresponding to deep inelastic scattering with and without heavy quarks in the current fragmentation region scales at high $Q^2$ and fixed (low) $x_{Bj}$. The lower bound on charm contribution to the total structure function, $F_2^c(Q^2,x)$, is calculated and compared with the recent data on $F_2^c(Q^2,x)$ from H1 Collaboration.

hep-ph↗
arXiv1996

Quark Mass Effects in Deeply Inelastic Scattering

We argue that the difference between the structure functions corresponding to deep inelastic scattering with and without heavy quarks in the current fragmentation region scales at high Q^2 and fixed (low) x.

hep-ph↗