22 Result(s)
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Article
Open AccessProduction of pions, kaons and protons in pp collisions at \(\sqrt{s}= 900~\mathrm{GeV}\) with ALICE at the LHC
The production of π +, π −, K+, K−, p, and \(\overline{\mathrm{p}}\) at mid-rapid...
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Article
BKP states in the inclusive gluon production
The inclusive cross-section for gluon production is calculated by the dispersion technique in the NLO in the perturbative QCD with a large number of colours. The found cross-section coincides with the one deri...
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Article
Open AccessCharged-particle multiplicity measurement in proton–proton collisions at \(\sqrt{s}=7\) TeV with ALICE at LHC
The pseudorapidity density and multiplicity distribution of charged particles produced in proton–proton collisions at the LHC, at a centre-of-mass energy ...
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Article
Open AccessCharged-particle multiplicity measurement in proton–proton collisions at \(\sqrt{s}=0.9\) and 2.36 TeV with ALICE at LHC
Charged-particle production was studied in proton–proton collisions collected at the LHC with the ALICE detector at centre-of-mass energies 0.9 TeV and 2.36 TeV in the pseudorapidity range |η|<1.4. In the central...
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Article
Loops in the gluon emission amplitude: reggeization from the eikonal scattering
It is shown that in the eikonal scattering of a fast quark in the external field loop corrections to the gluon emission amplitude due to virtual softer gluon after renormalization coincide with a correction du...
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Article
Open AccessFirst proton–proton collisions at the LHC as observed with the ALICE detector: measurement of the charged-particle pseudorapidity density at \(\sqrt{s}=900\) GeV
On 23rd November 2009, during the early commissioning of the CERN Large Hadron Collider (LHC), two counter-rotating proton bunches were circulated for the first time concurrently in the machine, at the LHC inj...
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Article
Pomeron vertices in perturbative QCD in diffractive scattering
We analyze the momentum space triple pomeron vertex in perturbative QCD. In addition to the standard form of this vertex which is used in the context of total cross sections at high energies and in the QCD reg...
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Chapter and Conference Paper
Configuration Space Calculations for the 16O3 Molecule
The low-lying states of the ozone molecule are calculated within the framework of the Faddeev equations in configuration space. The Faddeev equations describing the system are solved as three-dimensional equat...
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Chapter and Conference Paper
Three-Body Bound State Calculations Without Explicit Partial Wave Decomposition
The problem of calculating three-body bound state properties has been tackled by several authors for a considerable time. In the usual approach the partial wave decomposition of the solution is sought, resulti...
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Article
The double parton distributions in the hard pomeron model
We study the double parton interaction process in collisions between highly virtual \(q{\bar q}\) pairs in the BFKL regime. Explicit expressions for the double parton distributi...
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Article
Structure function of the nucleus in the perturbative QCD with \(N_c\rightarrow\infty\) (BFKL pomeron fan diagrams)
The equation for the sum of BFKL pomeron fan diagrams is rederived by a direct summation and solved numerically for rapidities \(y\leq 50\) . At high rapidities, ...
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Article
Double scattering on the nucleus in the perturbative QCD
In the hard pomeron model consequences are studied which follow from the recently obtained form of the diffractive amplitude for the double scattering on the nucleus and the related EMC effect at small x. It is ...
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Article
The system of four reggeized gluons and the three-pomeron vertex in the high colour limit
The amplitude for 4 interacting reggeized gluons is studied in the high-colour limit. The leading order amplitude is explicitly shown to reduce to a pair of reggeons, i.e to a single BFKL pomeron. The next-to...
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Chapter and Conference Paper
Momentum Dependent Nucleon-Nucleon Potentials and the Off-Shell Dependence of the Triton Binding Energy
An inverse scattering scheme for nucleon-nucleon potentials in coupled channels is presented which includes a term proportional to the square of the momentum. The method is used to construct a set of fully pha...
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Article
Triple pomeron vertex in the limit \(N_c\rightarrow\infty\)
In the hard pomeron theory with the number of colours \(N_c\rightarrow\infty\) the diffractive amplitude obtained in [3] is compared with the results found for ...
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Article
On the multipomeron exchange and the BKP equation in the high colour limit
The interaction of reggeized gluons is discussed in the high-colour limit. It is argued that the dominant contributions from the diagrams with a topology of a cylinder sum into a single BFKL pomeron. It is als...
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Article
The bootstrap condition for many reggeized gluons and the photon structure function at lowx andN c→∞
The bootstrap condition is generalized ton reggeized gluons. As a result it is demonstrated that the intercept generated byn reggeized gluons cannot be lower than the one forn=2. Arguments are presented that in t...
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Article
The triple pomeron interaction in the perturbative QCD
The triple pomeron interaction is studied in the perturbative approach of BFKL-Bartels. At finite momentum transfers √−t the contribution factorizes in the standard manner with a triple-pomeron vertex proportiona...
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Chapter and Conference Paper
Interaction of η-Meson with Light Nuclei
A microscopic treatment of η-nucleus scattering is presented. When applying the underlying exact integral equations, excitations of the target are neglected, and an input ηN amplitude is chosen which reproduces t...
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Article
Target rescattering corrections to heavy flavour production off nuclei in the projectile fragmentation region
It is shown that at high energies secondary interactions of a produced particle with the nuclear target lead to shadowing, which is described by essentially the same formulas that follow from the low energy pi...
