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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 perform an in-depth comparative analysis of unintegrated parton distribution function (UPDF) models for isolated prompt diphoton production in proton-proton collisions at $\sqrt{s}=13$~TeV within the $k_t$-factorization framework.…

High Energy Physics - Phenomenology · Physics 2025-12-30 The CHROMA Collaboration , R. Kord Valeshabadi , S. Rezaie , K. Azizi

We calculate differential cross sections for $c \bar c$- and $b \bar b$-dijet production in $pp$-scattering at $\sqrt{s} = 13$ TeV in the $k_T$-factorization and hybrid approaches with different unintegrated parton distribution functions…

High Energy Physics - Phenomenology · Physics 2022-10-05 Rafal Maciula , Roman Pasechnik , Antoni Szczurek

The longitudinal proton structure function, $F_L(x,Q^2)$, from the $k_t$ factorization formalism by using the unintegrated parton distribution functions (UPDF) which are generated through the KMR and MRW procedures. The LO UPDF of the KMR…

High Energy Physics - Phenomenology · Physics 2016-01-20 Majid Modarres , Hossein Hossenikhani , Naeimeh Olanj , Mohammadreza Masouminia

We discuss single-diffractive production of dijets. The cross section is calculated for the first time in the $k_t$-factorization approach, neglecting transverse momentum of the pomeron. We use Kimber-Martin-Ryskin unintegrated parton…

High Energy Physics - Phenomenology · Physics 2017-11-02 Marta Luszczak , Antoni Szczurek

In this work, the P-P(\={P}) Drell-Yan lepton pair production (DY) differential cross sections at hadrons colliders, such as LHC and TEVATRON, are studied in the ${k_{t}}$-factorization framework. In order to take into account the…

High Energy Physics - Phenomenology · Physics 2021-09-13 M. Modarres , R. Taghavi , R. Aminzadeh Nik , R. Kord Valeshabadi

Inspired by the recent measurements of the CMS collaboration, we report a QCD study of dijet production in proton+lead collisions at the LHC involving large-transverse-momentum jets, $p_T \gtrsim 100$ GeV. Examining the inherent…

High Energy Physics - Phenomenology · Physics 2015-06-17 Kari J. Eskola , Hannu Paukkunen , Carlos A. Salgado

At the Large Hadron Collider (LHC) it will become possible for the first time to investigate experimentally the forward region in hadron-hadron collisions via high-$p_T$ processes. In the LHC forward kinematics QCD logarithmic corrections…

High Energy Physics - Phenomenology · Physics 2009-11-05 M. Deak , F. Hautmann , H. Jung , K. Kutak

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 a series of papers, we have investigated the compatibility of the $Kimber$-$Martin$-$Ryskin$ ($KMR$) and $Martin$-$Ryskin$-$Watt$ ($MRW$) $unintegrated$ parton distribution functions ($UPDF$) as well as the description of the…

High Energy Physics - Phenomenology · Physics 2016-11-02 M. Modarres , M. R. Masouminia , R. Aminzadeh-Nik , H. Hosseinkhani , N. Olanj

We discuss production of $c \bar c$-pairs within $k_T$-factorization approach (off-shell initial partons) with unintegrated parton distribution functions (uPDFs). We present a consistent prescription which merges the standard leading-order…

High Energy Physics - Phenomenology · Physics 2019-09-11 Rafal Maciula , Antoni Szczurek

In the present work, it is intended to calculate the unintegrated parton distribution functions (UPDFs) of the $^6{Li}$ nucleus, which depend not only on the longitudinal momentum fraction $x$ (the Bjorken variable) and the factorization…

High Energy Physics - Phenomenology · Physics 2019-01-23 M. Modarres , H. Hadian

The invariant cross sections for direct photon production in hadron-hadron collisions are calculated for several initial energies (SPS, ISR, S$p \bar p$S, RHIC, Tevatron, LHC) including initial parton transverse momenta within the formalism…

High Energy Physics - Phenomenology · Physics 2008-11-26 T. Pietrycki , A. Szczurek

In this paper, we investigate the differential cross sections of the inclusive jet and dijet productions of the ZEUS collaboration data at the center of mass energies of $\sim 300\;GeV$ and $ 319\;GeV$ using the $k_t$ and…

High Energy Physics - Phenomenology · Physics 2021-08-02 R. Kord Valeshabadi , M. Modarres , S. Rezaie , R. Aminzadeh Nik

Inclusive cross sections for pion production in proton-proton collisions are calculated for the first time based on unintegrated parton (gluon, quark, antiquark) distributions (uPDF). We use Kwieci\'nski uPDF's and phenomenological…

Nuclear Theory · Physics 2009-11-11 M. Czech , A. Szczurek

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 investigate inclusive forward single-hadron production in high-energy proton--proton collisions using a CGC-inspired Monte Carlo event generator, MC-CGC. We carried out a systematic study of the sensitivity of the running-coupling…

High Energy Physics - Phenomenology · Physics 2026-05-18 Hirotsugu Fujii , Tetsufumi Hirano , Kazunori Itakura , Yasushi Nara , Shujun Zhao

We discuss single-diffractive production of dijets. The cross section is calculated within the resolved pomeron picture, for the first time in the $k_t$-factorization approach, neglecting transverse momentum of the pomeron. We use…

High Energy Physics - Phenomenology · Physics 2017-09-27 Marta Luszczak , Rafal Maciula , Antoni Szczurek , Izabela Babiarz

We propose a factorization formula for the cross section for forward dijet production in dilute-dense collisions. The new formula is applicable for an arbitrary value of the momentum imbalance of the two jets, $k_t$. It unifies the…

High Energy Physics - Phenomenology · Physics 2015-12-01 Elena Petreska

We discuss inclusive production of open charm in proton-proton scattering at LHC. The calculation is performed within the $k_t$-factorization approach. Different models of unintegrated gluon distributions (UGDF) from the literature are…

High Energy Physics - Phenomenology · Physics 2013-05-29 Rafal Maciula , Antoni Szczurek
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