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We discuss the applicability of the $k_T$ factorization theorem to low-$p_T$ hadron production in hadron-hadron collision in a simple toy model, which involves only scalar particles and gluons. It has been shown that the $k_T$ factorization…

High Energy Physics - Phenomenology · Physics 2011-07-01 Chun-peng Chang , Hsiang-nan Li

High order calculation at semi-hard scale is very important, but a satisfactory calculation framework is still missing. We propose a systematic method to regularize rapidity divergences in the CGC factorization, which makes higher order…

Nuclear Theory · Physics 2019-10-31 Hao-Yu Liu , Yan-Qing Ma , Kuang-Ta Chao

We study single inclusive forward hadron production in high energy proton-nucleus collisions at next-to-leading order in the Color Glass Condensate framework. Recent studies have shown that the next-to-leading order corrections to this…

High Energy Physics - Phenomenology · Physics 2016-07-05 B. Ducloué , T. Lappi , Y. Zhu

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 revisit the calculation of the cross section for forward inclusive single hadron production in $pA$ collisions within the hybrid approach. We show that the proper framework to perform this calculation beyond leading order is not the…

High Energy Physics - Phenomenology · Physics 2023-07-28 Tolga Altinoluk , Néstor Armesto , Alexander Kovner , Michael Lublinsky

Minijet production and transverse energy are important not only to understand hadronic collisions, but also for the interpretation of nucleus collisions at RHIC and LHC, where it determines the ``initial conditions'' for the flow in a…

High Energy Physics - Phenomenology · Physics 2007-05-23 Gosta Gustafson

A typical factorization formula for production of a particle with a small transverse momentum in hadron-hadron collisions is given by a convolution of two leading-twist TMD parton densities with cross section of production of the final…

High Energy Physics - Phenomenology · Physics 2018-07-04 I. Balitsky , A. Tarasov

We develop a Monte-Carlo event generator based on combination of a parton production formula including the effects of parton saturation (called the DHJ formula) and hadronization process due to the Lund string fragmentation model. This…

High Energy Physics - Phenomenology · Physics 2015-06-23 Wei-Tian Deng , Hirotsugu Fujii , Kazunori Itakura , Yasushi Nara

If studies of electroweak gauge boson final states at the Large Hadron Collider, for Standard Model physics and beyond, are sensitive to effects of the initial state's transverse momentum distribution, appropriate generalizations of QCD…

High Energy Physics - Phenomenology · Physics 2015-06-19 S. Dooling , F. Hautmann , H. Jung

At hadron colliders, the differential cross section for $W$ production can be factorized and it is sensitive transverse momentum dependent distributions (TMD) for low boson transverse momentum. While, often, the corresponding…

High Energy Physics - Phenomenology · Physics 2021-06-02 Daniel Gutierrez-Reyes , Sergio Leal-Gomez , Ignazio Scimemi

We discuss single inclusive hadron production from a high energy quark scattering off a strong target color field in the Color Glass Condensate formalism. Recent calculations of this process at the next-to-leading order accuracy have led to…

High Energy Physics - Phenomenology · Physics 2016-07-05 B. Ducloué , T. Lappi , Y. Zhu

An earlier developed $k_T$-factorization framework to calculate the associated prompt photon and hadronic jets production cross sections at high energies is extended now to the electron-proton deep inelastic scattering. The proposed method…

High Energy Physics - Phenomenology · Physics 2023-08-02 A. V. Lipatov , M. A. Malyshev

We study the effect of multiple parton radiation to Higgs boson plus jet production at the LHC, by applying the transverse momentum dependent (TMD) factorization formalism to resum large logarithmic contributions to all orders in the…

High Energy Physics - Phenomenology · Physics 2017-03-01 Peng Sun , Joshua Isaacson , C. -P. Yuan , Feng Yuan

We provide a concise overview on transverse momentum dependent (TMD) parton distribution functions, their application to topical issues in high-energy physics phenomenology, and their theoretical connections with QCD resummation, evolution…

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

Employing the recently developed open quantum system Effective Field Theory framework, we investigate jet production and evolution in a dense nuclear medium in electron-ion/heavy-ion collisions. We confirm that the frequent monitoring of…

High Energy Physics - Phenomenology · Physics 2024-12-30 Balbeer Singh , Varun Vaidya

In this paper, we present the results for the forward trijet production differential cross section in the gluon initiated channel at leading order in proton-nucleus collisions. The calculations are carried out within the Color Glass…

High Energy Physics - Phenomenology · Physics 2026-04-10 Paul Caucal , Marcos Guerrero Morales , Farid Salazar

We perform calculations of Z+jet cross-section taking into account the transverse momenta of the initial partons. Transverse Momentum Dependent (TMD) parton densities obtained with the Parton Branching method are used and higher order…

High Energy Physics - Phenomenology · Physics 2019-05-15 M. Deak , A. van Hameren , H. Jung , A. Kusina , K. Kutak , M. Serino

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

Parametrizing TMD parton densities and fragmentation functions in ways that consistently match their large transverse momentum behavior in standard collinear factorization has remained notoriously difficult. We show how the problem is…

High Energy Physics - Phenomenology · Physics 2023-06-07 J. O. Gonzalez-Hernandez , T. Rainaldi , T. C. Rogers