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The linear k_\perp-factorization is part and parcel of the pQCD description of high energy hard processes off free nucleons. In the case of heavy nuclear targets the very concept of nuclear parton density becomes ill-defined as exemplified…

High Energy Physics - Phenomenology · Physics 2016-09-06 N. N. Nikolaev , W. Schäfer

We consider the differential cross-section for single-inclusive jet production with transverse momentum $P_\perp$ in Deep Inelastic Scattering (DIS) at small Bjorken $x_{\rm Bj}$, mediated by a virtual photon with virtuality $Q^2$. Unlike…

High Energy Physics - Phenomenology · Physics 2026-02-05 Paul Caucal , Farid Salazar

We discuss correlations in azimuthal angle as well as correlations in two-dimensional space of transverse momenta of two jets as well as photon and jet. Some $k_t$-factorization subprocesses are included for the first time in the…

Nuclear Theory · Physics 2011-07-19 Antoni Szczurek , Tomasz Pietrycki , Anna Rybarska , Gabriela Slipek

We investigate the use of jets to measure transverse momentum dependent distributions (TMDs). The example we use to present our framework is the dijet momentum decorrelation at lepton colliders. Translating this momentum decorrelation into…

High Energy Physics - Phenomenology · Physics 2018-10-24 Daniel Gutierrez-Reyes , Ignazio Scimemi , Wouter J. Waalewijn , Lorenzo Zoppi

We argue that semi-inclusive photo-production of a pair of hard jets via coherent diffraction in nucleus-nucleus ultra-peripheral collisions at high energy is a golden channel to study gluon saturation. The dominant contribution is the…

High Energy Physics - Phenomenology · Physics 2023-04-26 E. Iancu , A. H. Mueller , D. N. Triantafyllopoulos , S. Y. Wei

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

We show that saturation can manifest itself in central-forward dijet production in p-A collisions. In spite of large transverse momenta of the jets, the almost back-to-back dijet configurations are able to probe gluon density at low x and…

High Energy Physics - Phenomenology · Physics 2012-12-21 Sebastian Sapeta

We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for dijet correlations in proton-proton collisions at RHIC energies. We discuss correlations in azimuthal angle as well as…

High Energy Physics - Phenomenology · Physics 2008-11-26 Antoni Szczurek , Anna Rybarska , Gabriela Slipek

We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for photon-jet correlations in $pp$ and $p \bar p$ collisions at RHIC, Tevatron and LHC energies. We discuss correlations in…

High Energy Physics - Phenomenology · Physics 2008-12-18 Antoni Szczurek , Tomasz Pietrycki

We review a consistent description of the fusion and saturation of partons in the Lorentz-contracted ultrarelativistic nuclei in terms of a nuclear attenuation of color dipole states of the photon and collective Weizs\"acker-Williams (WW)…

High Energy Physics - Phenomenology · Physics 2017-08-23 I. P. Ivanov , N. N. Nikolaev , W. Schäfer , B. G. Zakharov , V. R. Zoller

Diffraction plays an exceptional role in DIS off heavy nuclei. First, diffraction into hard dijets is an unique probe of the unintegrated glue in the target. Second, because diffraction makes 50 per cent of total DIS off a heavy target,…

High Energy Physics - Phenomenology · Physics 2017-08-23 I. P. Ivanov , N. N. Nikolaev , W. Schäfer , B. G. Zakharov , V. R. Zoller

Photon-jet azimuthal correlations in proton-nucleus collisions are a promising tool for gaining information on the gluon distribution of the nucleus in the regime of non-linear color fields. We compute such correlations from the process…

High Energy Physics - Phenomenology · Physics 2018-01-31 Sanjin Benić , Adrian Dumitru

We study exclusive dijet production in coherent diffractive processes in deep inelastic scattering and real (and virtual) photon-hadron ($\gamma^{(*)}$-h) collisions in the Color Glass Condensate formalism at leading order. We show that the…

High Energy Physics - Phenomenology · Physics 2016-05-24 Tolga Altinoluk , Néstor Armesto , Guillaume Beuf , Amir H. Rezaeian

We calculate the production of a photon and two jets at forward rapidity in proton-nucleus collisions, within the hybrid dilute-dense framework in the Color Glass Condensate (CGC) formalism. After obtaining the cross section for both the…

High Energy Physics - Phenomenology · Physics 2019-09-04 Tolga Altinoluk , Renaud Boussarie , Cyrille Marquet , Pieter Taels

We derive the two-plateau momentum distribution of final state (FS) quarks produced in deep inelastic scattering (DIS) off nuclei in the saturation regime. The diffractive plateau which dominates for small transverse momentum p measures…

High Energy Physics - Phenomenology · Physics 2009-11-07 N. N. Nikolaev , W. Schäfer , B. G. Zakharov , V. R. Zoller

Heavy ion collisions at high energies can be used as an interesting way to recreate and study the medium of the quark-gluon plasma (QGP). We particularly investigate the jets produced in hard binary collisions and their interactions with a…

High Energy Physics - Phenomenology · Physics 2020-09-11 Martin Rohrmoser , Krzysztof Kutak , Andreas van Hameren , Wiesław Płaczek , Konrad Tywoniuk

Using the small-$x$ Improved Transverse Momentum Dependent factorization (ITMD), which, for a general two-to-two massless scattering can be proved within the Color Glass Condensate (CGC) theory for transverse momenta of particles greater…

High Energy Physics - Phenomenology · Physics 2023-06-21 Ishita Ganguli , Andreas van Hameren , Piotr Kotko , Krzysztof Kutak

We demonstrate that hard dijet production via coherent inelastic diffraction is a promising channel for probing gluon saturation at the Electron-Ion Collider. By $inelastic$ diffraction we mean a process in which the two hard jets - a…

High Energy Physics - Phenomenology · Physics 2022-06-01 E. Iancu , A. H. Mueller , D. N. Triantafyllopoulos

Large angle gluon radiations induced by multiple parton scatterings contribute to dijet production in deeply inelastic scattering off a large nucleus at the Electron-Ion Collider. Within the generalized high-twist approach to multiple…

High Energy Physics - Phenomenology · Physics 2022-03-22 Yuan-Yuan Zhang , Xin-Nian Wang

We discuss a dramatic change brought into the pQCD description of hard processes in a nuclear environment by a large thickness of heavy nuclei. It breaks the familiar linear $k_{\perp}$-factorization which must be replaced by a new concept…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. N. Nikolaev , W. Schäfer , B. G. Zakharov , V. R. Zoller