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The transverse momentum ($p_T$) and pseudorapidity ($\eta$) spectra of charged particles produced in proton-proton ($pp$) and lead-lead (Pb-Pb) collisions at the large hadron collider (LHC) are described by a hybrid model. In the model, the…

高能物理 - 唯象学 · 物理学 2017-01-13 Ya-Hui Chen , Fu-Hu Liu , Sakina Fakhraddin , Magda A. Rahim , Mai-Ying Duan

We compute inclusive dihadron cross-section in Deep Inelastic Scattering at next-to-leading order (NLO) and small $x$ in the Color Glass Condensate. We focus on the kinematic limit where the hadrons are produced at forward rapidities (in…

高能物理 - 唯象学 · 物理学 2024-06-04 Paul Caucal , Farid Salazar

Two classes of jet correlations in hot and dense matter are explored. Correlations between very high transverse momentum hadrons within a jet sample the gluon density of the medium, where, the minimal modification on the same side as the…

核理论 · 物理学 2008-11-26 A. Majumder

We study the transverse momentum spectrum of hadrons in jets. By measuring the transverse momentum with respect to a judiciously chosen axis, we find that this observable is insensitive to (the recoil of) soft radiation. Furthermore, for…

高能物理 - 唯象学 · 物理学 2019-02-11 Duff Neill , Ignazio Scimemi , Wouter J. Waalewijn

By analyzing experimental data on semi-inclusive deep inelastic scattering off longitudinally polarized targets, we extract the transverse momentum dependence of the quark helicity distribution, i.e., the difference between the…

高能物理 - 唯象学 · 物理学 2024-09-27 Alessandro Bacchetta , Alessia Bongallino , Matteo Cerutti , Marco Radici , Lorenzo Rossi

Jet production at hadron colliders provides constraints on the parton distribution functions (PDFs) of the proton, in particular on the gluon distribution. In the present paper, the impact on PDF of CMS inclusive differential jet cross…

高能物理 - 唯象学 · 物理学 2022-11-22 Deniz Sunar Cerci , Salim Cerci , Katarzyna Wichmann

We study the semi-inclusive hadron production in deep inelastic scattering at small $x$. A transverse momentum dependent factorization is found consistent with the results calculated in the small-$x$ approaches, such as the color-dipole…

高能物理 - 唯象学 · 物理学 2009-11-23 Cyrille Marquet , Bo-Wen Xiao , Feng Yuan

We introduce a general expression which enables the parton distribution, unintegrated over the parton transverse momentum, to be obtained from the conventional parton densities. We use the formalism to study the effects of the transverse…

高能物理 - 唯象学 · 物理学 2014-11-17 M. A. Kimber , A. D. Martin , M. G. Ryskin

We compute the next-to-leading order QCD corrections to the spin-independent and spin-dependent cross-sections for the production of a single-hadron accompanied by an opposite jet in hadronic collisions. This process is being studied…

高能物理 - 唯象学 · 物理学 2009-07-30 Daniel de Florian

We evaluate the Koba-Nielsen-Olesen (KNO) scaling functions for quark- and gluon-initiated jets by incorporating energy conservation into the Double Logarithmic Approximation (DLA). The resulting modified DLA (MDLA) expressions differ…

高能物理 - 唯象学 · 物理学 2026-02-25 Xiang-Pan Duan , Lin Chen , Guo-Liang Ma , Carlos A. Salgado , Bin Wu

The formulae for calculating jet fragmentation momentum, $<j_T^2>$, and parton transverse momentum, $<k_T^2>$, and conditional yield are discussed in two particle correlation framework. Additional corrections are derived to account for the…

核实验 · 物理学 2009-11-10 Jiangyong Jia

In this series of three lectures, we discuss several aspects of high energy scattering among hadrons in Quantum Chromodynamics. The first lecture is devoted to a description of the parton model, Bjorken scaling and the scaling violations…

高能物理 - 唯象学 · 物理学 2010-03-25 Francois Gelis , Tuomas Lappi , Raju Venugopalan

We compute resummed and matched predictions for jet angularities in hadronic dijet and Z+jet events with and without grooming the candidate jets using the SoftDrop technique. Our theoretical predictions also account for non-perturbative…

高能物理 - 唯象学 · 物理学 2022-03-23 Daniel Reichelt , Simone Caletti , Oleh Fedkevych , Simone Marzani , Steffen Schumann , Gregory Soyez

We calculate the next-to-leading order(NLO) QCD corrections to the $WH^0$ production in association with a jet at hadron colliders. We study the impacts of the complete NLO QCD radiative corrections to the integrated cross sections, the…

高能物理 - 唯象学 · 物理学 2015-03-17 Su Ji-Juan , Ma Wen-Gan , Zhang Ren-You , Guo Lei

Numerous papers have appeared recently showing fits to transverse momentum ($p_T$) spectra measured at the Large Hadron Collider (LHC) in proton - proton collisions.This talk focuses on the fits extending to very large values of the…

高能物理 - 唯象学 · 物理学 2017-03-08 J. Cleymans

I review the status of next-to-leading-order calculations for hadronic final states in deeply-inelastic lepton--nucleon scattering. In more detail, I focus on calculations of (2+1)-jet-type cross sections, describe recent progress in…

高能物理 - 唯象学 · 物理学 2008-11-26 Dirk Graudenz

The transverse momentum distributions of identified hadrons produced in Pb-Pb collisions at the Large Hadron Collider (LHC) are studied in the low and intermediate range for $p_T<5$ GeV/c. All four spectra ($\pi, K, p, \Lambda$) can be well…

核理论 · 物理学 2013-05-29 Rudolph C. Hwa , Lilin Zhu

Next-to-next-to-leading order QCD predictions for single-, double- and even triple-differential distributions of jet events in proton-proton collisions have recently been obtained using the NNLOjet framework based on antenna subtraction.…

高能物理 - 唯象学 · 物理学 2020-03-09 Michal Czakon , Andreas van Hameren , Alexander Mitov , Rene Poncelet

We study gradient corrections to the transport equation for energetic light partons in dense QCD environments. In the diffusion limit, the transport dynamics is solely controlled by small-angle elastic scatterings, leading to transverse…

高能物理 - 唯象学 · 物理学 2023-03-29 João Barata , Andrey V. Sadofyev , Xin-Nian Wang

Hard processes leading to high transverse momentum hadron production are calculable in perturbative Quantum Chromodynamics (pQCD) for proton-proton collisions. In heavy-ion collisions, such processes occur as well, and due to a separation…

高能物理 - 唯象学 · 物理学 2007-05-23 Thorsten Renk