# Search results for: A. V. Lipatov

The European Physical Journal C > 2019 > 79 > 2 > 1-7

*pp*collisions at $$\sqrt{s} = 8$$ s=8 TeV. The upper limit $$w_{\mathrm{c} {\bar{{\mathrm{c}}}}}< 1.93$$ wcc¯<1.93 % is obtained...

The European Physical Journal C > 2018 > 78 > 10 > 1-14

*b*-flavored hadron decays and non-prompt double $$J/\psi $$ J/ψ production at the LHC using the $$k_T$$ kT -factorization approach. To describe the inclusive

*b*-hadron decays into the different charmonium states we apply fragmentation approach and adopt fragmentation functions based on the non-relativistic...

The European Physical Journal C > 2018 > 78 > 1 > 1-9

*b*-flavored hadrons at the LHC using the $$k_T$$ kT -factorization approach. Our analysis covers both inclusive charmonia production and production of $$J/\psi $$ J/ψ mesons in association with

*Z*bosons. We apply the transverse momentum dependent (or unintegrated) gluon density in a proton...

The European Physical Journal C > 2017 > 77 > 11 > 1-8

*Z*bosons associated with beauty quarks at the LHC using a combined $$k_T$$ k T + collinear QCD factorization approach, which interpolates between small

*x*and large

*x*physics. Our consideration is based on the off-shell gluon–gluon fusion subprocess $$g^* g^* \rightarrow Z Q\bar{Q}$$ g ∗ g ∗ → Z Q Q ¯ at the leading order $$\mathcal{O}(\alpha...

The European Physical Journal C > 2017 > 77 > 1 > 1-6

The European Physical Journal C > 2015 > 75 > 5 > 1-8

The European Physical Journal C > 2015 > 75 > 9 > 1-12

*pp*collisions at LHC energies is studied. Our consideration is based on the non-relativistic QCD formalism for bound states and off-shell amplitudes for hard partonic subprocesses. The transverse momentum dependent (unintegrated) gluon densities...

Journal of High Energy Physics > 2013 > 2013 > 2 > 1-32

*k*

_{ T }-factorization approach, the isolated prompt photon pair production in

*pp*and collisions at high energies is studied. The consideration is based on the quark-antiquark annihilation, quark-gluon scattering and gluon-gluon fusion subprocesses, where the non-zero transverse momenta of incoming partons are taken into account. The unintegrated...

Journal of High Energy Physics > 2012 > 2012 > 5 > 1-14

*k*

_{ T }-factorization approach, the production of prompt photons in association with a heavy (charm or beauty) quarks at high energies is studied. The consideration is based on the $ \mathcal{O}\left( {\alpha \alpha_s^2} \right) $ off-shell amplitudes of gluon-gluon fusion and quark-(anti)quark interaction subprocesses. The unintegrated parton densities in a proton...

The European Physical Journal C > 2011 > 71 > 4 > 1-14

*J*/

*ψ*mesons at HERA within the framework of the

*k*

_{ T }-factorization QCD approach. Our study is based on the color singlet model supplemented with the relevant off-shell matrix elements and the CCFM and KMR unintegrated gluon densities in a proton and in a photon. Both the direct and resolved photon contributions are taken into account. Our predictions...

Journal of High Energy Physics > 2011 > 2011 > 12 > 1-15

*k*

_{ T }-factorization approach, the production of unpolar-ized Drell-Yan lepton pairs at high energies is studied. The consideration is based on the (

*α*) and (

*αα*

_{ s }) off-shell partonic matrix elements with virtual photon

*γ*

^{ ∗ }and

*Z*...

Journal of High Energy Physics > 2011 > 2011 > 1 > 1-23

*k*

_{ T }-factorization QCD approach. Our consideration is based on the CCFM-evolved unintegrated gluon densities in a proton. The performed analysis covers the total and differential cross sections of open charm and beauty...

The European Physical Journal C > 2005 > 44 > 4 > 559-566

*k*

_{T}-factorization approach. The attention is focused on the dominant gluon-gluon fusion subprocess. We calculate the total cross section and transverse momentum distributions of the inclusive Higgs production using unintegrated gluon distributions in a proton obtained from the full CCFM evolution...

The European Physical Journal C > 2005 > 41 > 2 > 163-172

*k*

_{T}-factorization QCD approach. Both direct and resolved photon contributions are taken into account. A conservative error analysis is performed. The unintegrated gluon distribution in the photon is obtained from the full CCFM evolution equation. The traditional color-singlet mechanism to describe the non-perturbative...