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The higher-twist formalism is used at $O(\alpha^2_s)$ to compute all possible medium-induced single-scattering emission kernels for an incoming highly energetic and virtual quark traversing the nuclear environment. The effects of the…

High Energy Physics - Phenomenology · Physics 2026-05-13 Amit Kumar , Gojko Vujanovic

Exclusive processes in hard electroproduction are one of the best place for understanding QCD in view of its factorization properties. In particular, in the limit of asymptotic gamma* p center of mass energy, they give an access to the…

High Energy Physics - Phenomenology · Physics 2010-11-19 I. V. Anikin , D. Yu. Ivanov , B. Pire , L. Szymanowski , S. Wallon

We present a new study of jet interactions in the quark-gluon plasma created in high-energy heavy-ion collisions, using a multistage event generator within the JETSCAPE framework. We focus on medium-induced modifications in the rate of…

The nonperturbative modification of the evolution equation for QCD generating functional is applied to the analysis of the factorial moments of the intrajet particle distributions in QCD. Nonperturbative preasymptotic correction to the…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. V. Leonidov , D. M. Ostrovsky

We present a calculation of open charm quark production in diffractive deep inelastic electron-proton scattering in a perturbative QCD framework. The cross section is proportional to the square of the gluon density and explicitly displays…

High Energy Physics - Phenomenology · Physics 2009-10-30 H. Lotter

Using the colour dipole picture and the colour glass condensate effective theory, we study the diffractive production of two or three jets via coherent photon-nucleus interactions at high energy. We consider the hard regime where the photon…

High Energy Physics - Phenomenology · Physics 2024-02-23 S. Hauksson , E. Iancu , A. H. Mueller , D. N. Triantafyllopoulos , S. Y. Wei

We calculate the evolution of a jet shower due to medium induced splittings in the deep LPM regime. Due to the characteristic energy dependence of the formation time $t_{\rm form}(\omega)= \sqrt{\omega /\hat{\bar{q}}}$, the radiative…

High Energy Physics - Phenomenology · Physics 2019-01-01 Y. Mehtar-Tani , S. Schlichting

A review is given of the QCD corrections to charm quark production in deep inelastic electron-proton scattering. An outline of the computation of the virtual photon-parton subprocesses, from which one obtains the heavy quark coefficient…

High Energy Physics - Phenomenology · Physics 2011-04-15 W. L. van Neerven

We study the fragmentation function of jets propagating through a dense quark-gluon plasma within perturbative QCD. Our results for its nuclear modification factor are in qualitative agreement with the experimental data in Pb+Pb collisions…

High Energy Physics - Phenomenology · Physics 2020-09-04 Paul Caucal , Edmond Iancu , Alfred H. Mueller , Gregory Soyez

Quark and gluon jets traversing through a quark-gluon plasma not only lose their energies but also can undergo flavor conversions. The conversion rates via the elastic $q(\bar q)g\to gq(\bar q)$ and the inelastic $q\bar q\leftrightarrow gg$…

Nuclear Theory · Physics 2008-11-26 W. Liu , C. M. Ko , B. W. Zhang

In this paper, we analyze the high-energy limits for Higgs boson plus two jet production. We consider two high-energy limits, corresponding to two different kinematic regions: a) the Higgs boson is centrally located in rapidity between the…

High Energy Physics - Phenomenology · Physics 2009-11-10 V. Del Duca , W. Kilgore , C. Oleari , C. R. Schmidt , D. Zeppenfeld

New results on charm quark production at HERA in an increased phase space in deep-inelastic scattering and photoproduction are discussed. Single & double-differential cross section distributions are compared to next-to-leading order QCD…

High Energy Physics - Experiment · Physics 2011-04-28 Andreas Werner Jung

The High-Energy Factorisation (HEF) coefficient function or impact factor for the hadroproduction of the state ${}^1S_0^{[1]}$ of a heavy quark-antiquark pair ($Q\bar{Q}$) at forward rapidities is computed at NLO in $\alpha_s$. This impact…

High Energy Physics - Phenomenology · Physics 2024-09-17 Maxim Nefedov

To study scattering amplitudes at high-energy, the T-product of two currents can be expanded in terms of coefficient functions (impact factors) and matrix elements of ``composite color dipoles'' made of Wilson line operators with rapidity…

High Energy Physics - Phenomenology · Physics 2010-11-19 Giovanni Antonio Chirilli

Relying on the shockwave approach, we present the main steps of the computation of the impact factor for the exclusive diffractive photo- or electro- production of a forward dijet with NLO accuracy. We provide details of the cancellation…

High Energy Physics - Phenomenology · Physics 2017-04-05 R. Boussarie , A. V. Grabovsky , L. Szymanowski , S. Wallon

We consider forward inclusive production of two quarks in the high energy p-A collisions in the CGC formalism. We demonstrate that the production cross-section is determined by the convolution of the proton generalized double transverse…

High Energy Physics - Phenomenology · Physics 2017-10-20 Alex Kovner , Amir H. Rezaeian

The second and third factorial moments of the multiplicity distributions of gluon and quark jets are calculated up to the next-to-next-to-next-to leading order in perturbative QCD, using the equations for generating functions. The results…

High Energy Physics - Phenomenology · Physics 2011-07-19 I. M. Dremin , C. S. Lam , V. A. Nechitailo

Using the recently found hA amplitude, single and double inclusive jet production rates on the nucleus are studied in the perturbative QCD with $N_c\to\infty$. Jet multiplicities are found to grow with $A$ and energy as $A^{2/9}s^\Delta$…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. A. Braun

We propose a new framework, merging High Energy Factorization with final-state jet quenching effects due to interactions in a quark-gluon plasma, to compute di-jet rates at mid- and forward rapidity. It allows to consistently study the…

High Energy Physics - Phenomenology · Physics 2017-11-29 Michal Deák , Krzysztof Kutak , Konrad Tywoniuk

We calculate the multiple scattering effect on single hadron production in semi-inclusive lepton-nucleus deeply inelastic scattering. We show that the quantum interference of multiple scattering amplitudes leads to suppression in hadron…

High Energy Physics - Phenomenology · Physics 2007-06-13 Xiaofeng Guo , Jun Li