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In the framework of the kt-factorization approach, we study the production of prompt photons associated with heavy (charm and beauty) quarks in hadron-hadron collisions at high energies. Our consideration is based on the amplitude for the…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. P. Baranov , A. V. Lipatov , N. P. Zotov

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

In the framework of the kt-factorization approach, we study the production of Higgs bosons associated with a heavy (beauty or top) quark pair at the CERN LHC collider conditions. Our consideration is based mainly on the off-shell…

High Energy Physics - Phenomenology · Physics 2009-08-11 A. V. Lipatov , N. P. Zotov

In the present work, which is based on the k_-factorization framework, it is intended to make a detail study of the isolated prompt-photon pairs (IPPP) production in the high-energy inelastic hadron-hadron collisions differential cross…

High Energy Physics - Phenomenology · Physics 2019-09-10 M. Modarres , R. Aminzadeh Nik , R. Kord Valeshbadi , H. Hosseinkhani , N. Olanj

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 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 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 calculate the cross section of charm photoproduction at HERA collider in the framework of the kt-factorization QCD approach. Our analysis cover the inclusive charm production as well as charm and associated jet production processes. Both…

High Energy Physics - Phenomenology · Physics 2008-11-26 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 investigate the inclusive photoproduction of J/Psi mesons at HERA within the framework of the kt-factorization QCD approach. Our consideration is based on the color singlet model supplemented with the relevant off-shell matrix elements…

High Energy Physics - Phenomenology · Physics 2015-05-20 S. P. Baranov , A. V. Lipatov , N. P. Zotov

We present calculations of the beauty photoproduction at HERA collider in the framework of the kt-factorization approach. Both direct and resolved photon contributions are taken into account. The unintegrated gluon densities in a proton and…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. V. Lipatov , N. P. Zotov

The unintegrated gluon density in the photon is determined, using the Kimber-Martin-Ryskin prescription . In addition, a model of the unintegrated gluon is proposed, based on the saturation model extended to the large-x region. These gluon…

High Energy Physics - Phenomenology · Physics 2009-01-07 L. Motyka , N. Timneanu

We calculate the cross section of beauty production in electron-proton deep inelastic scattering at HERA collider in the framework of the kt-factorization approach. The unintegrated gluon distributions in a proton are obtained from the full…

High Energy Physics - Phenomenology · Physics 2011-03-23 A. V. Lipatov , N. P. Zotov

We present calculations of the prompt photon photoproduction at HERA collider in the k_T-factorization approach. Both direct and resolved contributions are taken into account. The conservative error analisys is performed. The unintegrated…

High Energy Physics - Phenomenology · Physics 2009-11-11 A. V. Lipatov , N. P. Zotov

In the framework of kt-factorization approach, the production and polarization of prompt psi(2S) mesons in pp collisions at the LHC energies is studied. Our consideration is based on the non-relativistic QCD formalism for bound states and…

High Energy Physics - Phenomenology · Physics 2015-10-06 S. P. Baranov , A. V. Lipatov , N. P. Zotov

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

High Energy Physics - Phenomenology · Physics 2018-03-07 Anna Cisek , Antoni Szczurek

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

We present calculations of heavy quark and quarkonium production at CERN LEP2 in the k_T-factorization QCD approach. Both direct and resolved photon contribution are taken into account. The conservative error analisys is performed. The…

High Energy Physics - Phenomenology · Physics 2011-01-25 A. V. Lipatov , N. P. Zotov

The prompt photon production in hadronic collisions has a long history of providing information on the substructure of hadrons and testing the perturbative techniques of QCD. Some valuable information about the parton densities in the…

High Energy Physics - Phenomenology · Physics 2017-03-14 Muhammad Goharipour , Hossein Mehraban

We discuss prompt production of $J/\psi$ mesons in proton-proton collisions at the LHC within NRQCD k$t$-factorization approach using Kimber-Martin-Ryskin (KMR) and Kutak-Stasto (KS) unintegrated gluon distribution (UGDF). We include both…

High Energy Physics - Phenomenology · Physics 2017-11-02 Anna Cisek , Antoni Szczurek