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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

The amplitude for production of a single photon associated with quark pair in the fusion of two off-shell gluons is calculated. The matrix element found is applied to the inclusive prompt photon hadroproduction at high energies in the…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. P. Baranov , 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

In the framework of the kt-factorization approach, the isolated prompt photon pair production in pp and p \bar p collisions at high energies is studied. The consideration is based on the quark-antiquark annihilation, quark-gluon scattering…

High Energy Physics - Phenomenology · Physics 2013-02-11 A. V. Lipatov

In the framework of the kt-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 2013-02-11 A. V. Lipatov , M. A. Malyshev , N. P. Zotov

We consider the prompt photon production at high energy hadron colliders in the framework of k_T-factorization approach. The unintegrated quark and gluon distributions in a proton are determined using the Kimber-Martin-Ryskin prescription.…

High Energy Physics - Phenomenology · Physics 2011-03-23 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

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 investigate the inclusive and jet production rates of $b-$quarks and also the $J/\psi-$meson production at the LHC in the framework of $k_T$-factorization QCD approach. Our study is based on the off-shell partonic QCD subprocesses. The…

High Energy Physics - Phenomenology · Physics 2012-02-21 Nikolay P. Zotov

We investigate the prompt photon production in deep inelastic scattering at HERA in the framework of kt-factorization QCD approach. Our study is based on the off-shell partonic amplitude e q* -> e gamma q, where the photon radiation from…

High Energy Physics - Phenomenology · Physics 2011-06-27 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

We study the production of prompt photons at high energy in the framework of the k_T-factorization approach. The amplitude for production of a single photon associated with quark pair in the fusion of two off-shell gluons is calculated.…

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

We reconsider the prompt photon photoproduction at HERA in the framework of the $k_T$-factorization QCD approach. The proposed method is based on the ${\cal O}(\alpha^2\alpha_s)$ amplitudes for $\gamma q\to\gamma gq$ and $\gamma…

High Energy Physics - Phenomenology · Physics 2013-11-07 A. V. Lipatov , M. A. Malyshev , N. P. Zotov

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

In the framework of the kt-factorization approach, we study the production of prompt photons and electroweak gauge bosons in high energy proton-(anti)proton collisions at modern colliders. Our consideration is based on the amplitude for the…

High Energy Physics - Phenomenology · Physics 2010-01-29 A. V. Lipatov , N. P. Zotov

We study the prompt photon hadroproduction at the LHC with the $k_T$-factorization approach and the $qg^* \to q\gamma$ and $g^*g^* \to q\bar q\gamma$ partonic channels, using three unintegrated gluon distributions which depend on gluon…

High Energy Physics - Phenomenology · Physics 2021-02-24 Krzysztof Golec-Biernat , Leszek Motyka , Tomasz Stebel

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

Inclusive beauty quark production in photon-photon collisions at CERN LEP2 is considered in the framework of the kt-factorization approach. Both direct and resolved photon contributions are taken into account. The unintegrated gluon…

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

We present a new approach for the prompt production of quarkonia which is based on the $k_T$-factorization method. The production of even C-parity quarkonia proceeds via the fusion of two (off-shell) gluons. Especially in the kinematics of…

High Energy Physics - Phenomenology · Physics 2021-07-27 Wolfgang Schäfer , Izabela Babiarz , Roman Pasechnik , Antoni Szczurek

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
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