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We study the possibility to analyse the data on inclusive prompt photon production at first LHC runs in the framework of the kt-factorization QCD approach. Our consideration is based on the amplitude for the production of a single photon…

High Energy Physics - Phenomenology · Physics 2011-04-20 A. V. Lipatov , M. A. Malyshev , N. P. Zotov

We investigate the inclusive Higgs boson production in proton-proton collisions at high energies in the framework of kt-factorization QCD approach. The attention is focused on the dominant off-shell gluon-gluon fusion subprocess, where the…

High Energy Physics - Phenomenology · Physics 2017-08-04 A. V. Lipatov , M. A. Malyshev , N. P. Zotov

We study the associated production of real (isolated) or virtual photons (with their subsequent leptonic decay) and hadronic jets in proton-proton collisions at the LHC using the $k_T$-factorization approach of QCD. The consideration is…

High Energy Physics - Phenomenology · Physics 2014-11-12 A. V. Lipatov , N. P. Zotov

We investigate the inclusive top quark pair production in proton-proton and proton-antiproton collisions at high energies in the framework of kt-factorization QCD approach. Our study is based on the off-shell partonic subprocesses g*g* ->…

High Energy Physics - Phenomenology · Physics 2015-05-28 A. V. Lipatov , N. P. Zotov

We present analytical expressions for the Transverse Momentum Dependent (TMD, or unintegrated) gluon and quark densities in a proton derived at leading order of QCD running coupling and valid at both small and large x. The calculations are…

High Energy Physics - Phenomenology · Physics 2025-02-27 A. V. Kotikov , A. V. Lipatov

We present hadron-level predictions from the Monte Carlo generator Cascade and numerical level calculations of beauty quark and inclusive b-jet production in the framework of the kT -factorization QCD approach for CERN LHC energies. The…

High Energy Physics - Phenomenology · Physics 2015-03-19 H. Jung , M. Kraemer , A. V. Lipatov , N. P. Zotov

We consider the associated production of $J/\psi$ mesons and muons originating from the $b$-flavored hadron decays and non-prompt double $J/\psi$ production at the LHC using the $k_T$-factorization approach. To describe the inclusive…

High Energy Physics - Phenomenology · Physics 2018-11-14 S. P. Baranov , A. V. Lipatov , M. A. Malyshev

In the framework of the kt-factorization approach, the production and polarization of prompt J/Psi mesons in pp collisions at the LHC energy 7 TeV is studied. Both the direct production mechanism as well as feed-down contributions from…

High Energy Physics - Phenomenology · Physics 2015-05-30 S. P. Baranov , A. V. Lipatov , N. P. Zotov

We investigate the inclusive Higgs boson production in proton-proton collisions at the CERN LHC conditions using the $k_T$-factorization approach. Our analysis is based on the dominant off-shell gluon-gluon fusion subprocess (where the…

High Energy Physics - Phenomenology · Physics 2018-03-28 N. A. Abdulov , A. V. Lipatov , M. A. Malyshev

We present hadron-level predictions from the Monte Carlo generator Cascade and parton level calculations of open b quark, b-flavored hadron and inclusive b-jet production in the framework of the kt-factorization QCD approach for the LHC…

High Energy Physics - Phenomenology · Physics 2013-02-11 H. Jung , M. Kraemer , A. V. Lipatov , N. P. Zotov

We reconsider the inclusive production of isolated prompt photons in $pp$ collisions at the LHC energies in the framework of $k_T$-factorization approach. Our analysis is based on the ${\cal O}(\alpha \alpha_s)$ off-shell (depending on the…

High Energy Physics - Phenomenology · Physics 2016-08-17 A. V. Lipatov , M. A. Malyshev

We investigate associated prompt photon and hadronic jet production at the LHC energies using the $k_T$-factorization approach. Our consideration is based on the $\mathcal O(\alpha\alpha_s^2)$ off-shell gluon-gluon fusion subprocess…

High Energy Physics - Phenomenology · Physics 2019-09-10 A. V. Lipatov , M. A. Malyshev , H. Jung

We consider the production of $Z$ bosons associated with beauty quarks at the LHC using a combined $k_T$ + collinear QCD factorization approach, that interpolates between small $x$ and large $x$ physics. Our consideration is based on the…

High Energy Physics - Phenomenology · Physics 2017-12-06 S. P. Baranov , H. Jung , A. V. Lipatov , M. A. Malyshev

We consider the associated production of Higgs boson and hadronic jet(s) in $pp$ collisions at the LHC for the first time using the $k_T$-factorization approach. Our analysis is based on the off-shell gluon-gluon fusion subprocess, where…

High Energy Physics - Phenomenology · Physics 2021-05-26 A. V. Lipatov , M. A. Malyshev

We use the Bessel-inspired behavior of parton densities at small Bjorken $x$ values, obtained in the case of the flat initial conditions for DGLAP evolution equations in the double scaling QCD approximation (DAS), to evaluate the transverse…

High Energy Physics - Phenomenology · Physics 2020-03-18 A. V. Kotikov , A. V. Lipatov , B. G. Shaikhatdenov , P. Zhang

Analytical expressions for the Transverse Momentum Dependent (TMD, or unintegrated) gluon and sea quark densities in nuclei are derived at leading order of QCD running coupling. The calculations are performed in the framework of the…

High Energy Physics - Phenomenology · Physics 2023-12-04 A. V. Lipatov , M. A. Malyshev , A. V. Kotikov , X. Chen

We discuss the prompt production of $J/\psi$ mesons in proton-proton collisions at the LHC within a NRQCD $k_{t}$-factorization approach using Kimber-Martin-Ryskin (KMR) unintegrated gluon distributions (UGDF). We include both direct…

High Energy Physics - Phenomenology · Physics 2016-12-21 Anna Cisek , Antoni Szczurek

In the framework of kt-factorization approach,the production of prompt $\chi_c$ mesons in pp collisions at the LHC energies is studied. Our consideration is based on the off-shell amplitudes for hard partonic subprocesses…

High Energy Physics - Phenomenology · Physics 2016-05-25 S. P. Baranov , A. V. Lipatov , N. P. Zotov

We investigate the prompt photon photoproduction at HERA within the framework of kt-factorization QCD approach. Our consideration is based on the off-shell matrix elements for the underlying partonic subprocesses. The unintegrated parton…

High Energy Physics - Phenomenology · Physics 2011-06-27 A. V. Lipatov , N. P. Zotov

In the framework of the 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 O(\alpha \alpha_s^2) off-shell…

High Energy Physics - Phenomenology · Physics 2013-01-29 N. P. Zotov , A. V. Lipatov , M. A. Malyshev
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